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Steelcase File Cabinet Locking Mechanism Apk,Knife Handle Wood Nz,Table Saw Woodworking Shop 3d - Step 2

We can reach up inside where the lock is, but can't find any kind of release or anything. We took out the top drawer, and emptied out the one below it, but can't get it out, nor any of the other drawers. Any ideas or technical knowledge how to get it open? Model number L. Update: Is there some kind of release mechanism or latch that we can reach inside and open the cabinet with? We will definitely order a new key, but need to get the cabinet to the basement before the kids pull it over on themselves. It's too heavy to move with the stuff in the drawers. THANKS!. Steelcase file cabinet – If you purchased a metal filing cabinet does not have a lock, it is a simple process in place a cabinet. The lock can be purchased at any store office and only need a few tools to install it. Remove all cabinet drawers. Drill a hole in the top of the cabinet either in front of the right or left. Press the part of the lock on the bolt and tighten the ring of the necklace.  Steelcase file cabinet, measure the length of the locking mechanism from the edge of the cabinet to the end of the lock. Transfer this measurement to the drawers. Fixed stops the lock to the rails of the drawers. These are solid metal bars in or near the bottom. These will be opened in the holes on the bar. This hole is forward of the drawer front, usually an inch ( centimeters) from the front door. Check out our steelcase cabinet selection for the very best in unique or custom, handmade pieces from our home & living shops.  Did you scroll all this way to get facts about steelcase cabinet? Well you're in luck, because here they come. There are 77 steelcase cabinet for sale on Etsy, and they cost $ on average. The most popular color? You guessed it: gray. The first cable extends between at least a first and second drawer. While the present invention has been described in terms of the preferred embodiments steelcase file cabinet locking mechanism apk in the drawings and discussed in the above specification, it will steelcase file cabinet locking mechanism apk understood by one skilled in the art that the present invention is not limited to these particular preferred embodiments, but includes any and all such modifications that are within the spirit and scope of the present invention as defined in the following claims. A resilient finger extends parallel to control slot Opening through control portion 88 is a control slot Drawer guides 18 are suspended from the support member at slots The drawers therefore do not rebound open, but rather only open when a user applies sufficient force to overcome the biasing resistance that spring 82 sterlcase.

The present invention relates to locks and interlocks that may be used with file cabinets, such as the file cabinet 60 depicted in FIGS. File cabinet 60 includes three drawers 62 a—c that are essentially stacked on top of each other in file cabinet Each drawer can be pulled in a first direction 64 toward an open position.

The lower most drawer 62 c in FIG. When it is time to close this drawer, it can be pushed in a second direction 66 back to its closed position. The interlocking system of the present invention prevents more than one drawer from being opened at a single time. While only three drawers are illustrated in file cabinet 60 , the present invention is applicable to cabinets having any number of drawers. The present invention also includes a locking system that overrides the interlocking system.

That is, when the locking system is activated, no drawers can be opened at any time. When the locking system is deactivated, the interlocking system is activated and prevents more than one drawer from being opened at a single time. The locking system may be activated by inserting a key into a keyhole 68 positioned at any suitable location on the file cabinet. The locking and interlocking system are highly integrated so that many of the components of the interlocking system are also used in the locking system.

The interlocks of the present invention may be advantageously combined or attached to the drawer slides in which drawers 62 slidingly move between their open and closed position. An example of one of these drawer slides 70 is depicted in FIG. Each drawer 62 includes two drawer slides 70 , one positioned on one side of the drawer and another positioned on the opposite side of the drawer.

While the interlocks of the present invention can be placed at other locations besides on drawer slide 70 , the attachment of the interlocks to the drawer slide 70 allows the interlocks to be simultaneously removed and repositioned when the drawer slides 70 are removed and repositioned. This greatly facilitates the reconfiguration of a file cabinet 60 with differently sized drawers An interlock 72 according to a first embodiment of the present invention is depicted in FIG.

Interlock 72 is attached to a drawer slide Interlock 72 is operatively coupled to a cable 74 FIG. In general, interlock 72 operates according to the amount of slack in cable Specifically, cable 74 has two different basic levels of slack. When no drawers are opened and the lock is not activated, cable 74 has a high amount of slack in it. When a single drawer is opened, interlock 72 takes up most or all of the slack in cable 74 and creates a second, lower level of slack in cable The lower level of slack in cable 74 is such that no other drawers in the cabinet 60 can be opened.

This lower level of slack may be zero, or may include a small amount of slack. When the open drawer is closed, more slack in the cable 74 returns and any other single drawer may thereafter be opened.

If a lock is included with the cabinet 60 , the lock is adapted to alter the slack in cable When in the locked position, the lock removes most or all of the slack in cable When in the unlocked condition, the lock allows cable 74 to have sufficient slack so that a single drawer may be opened.

Interlocks 72 are thus designed to only allow their associated or attached drawer to be opened when cable 74 has sufficient slack. Further, they are designed to remove substantially all of the slack in cable 74 , if their associated drawer is opened.

The detailed construction of interlock 72 , as well as how they accomplish the aforementioned functions, will now be described. Interlock 72 is adapted to be attached directly to a drawer slide While interlock 72 is depicted attached to the back ends of drawer slides 70 , it will be appreciated that it can be attached to the drawer slides at any desirable location along the drawer slides' length, or they can be attached directly to the cabinet.

Interlock 72 operates in conjunction with cable 74 so that only a single drawer can be open at a given time. If a lock is included in the cabinet, the lock is in communication with cable 74 and can change the amount of slack in cable If the lock is activated, cable 74 has little or no slack, and none of the drawers may be opened.

Interlock 72 allows a small portion of the pulling force exerted on a drawer in first direction 64 to be transmitted to cable Nevertheless, the amount of force transmitted is so small that a cable 74 having a relatively low tensile strength can still be used in a cabinet which provides strong resistance to its locking system being overcome.

As can be easily seen in FIG. Stationary portion 90 is fixedly secured to the interior of cabinet Stationary portion 90 includes an upper aperture and a lower aperture Upper aperture receives a first rivet that pivotally secures a lever to stationary portion Lower aperture receives a second rivet that pivotally secures a cam to stationary portion Interlock 72 further includes a cable guide 84 that is mounted to a pair of flanges 98 on stationary portion 90 Interlock 72 further includes a spring 82 and an engagement member Engagement member 86 comprises a flange that extends off of a slidable portion of drawer slide Slidable portion is slidable with respect to stationary portion 90 by way of a plurality of ball bearing cages that house a plurality of ball bearings in contact with both slidable portion and stationary portion 90 of drawer slide 70 FIGS.

Slidable portion is adapted to be secured to a drawer. Slidable portion may include a plurality of attachment flanges used to releasably secure slidable portion to the drawer. Similarly, stationary portion 90 may also include a plurality of attachment flanges used to releasably secure stationary portion 90 to the interior of the cabinet.

Lever , which is illustrated in more detail in FIGS. Lever includes an aperture for receiving first rivet Lever includes a spring attachment nub over which one end of spring 82 is secured. Lever further includes an engagement lug that engages cable When lever rotates about its pivot axis in a direction FIG. Spring 82 exerts a force on lever that tends to resist rotation in direction Lever includes an inner surface portion and a crest When a drawer is initially opened, cam abuts against crest and exerts a rotational force on lever If cable 74 is not in a low slack condition, cam pushes against crest until lever is rotated sufficiently to put cam in contact with inner surface portion This will be described in more detail below.

Cam , which is depicted in detail in FIGS. Cam includes a recess into which engagement member 86 fits when the associated drawer is in the closed position. Recess includes a contact surface which contacts engagement member 86 when the associated drawer is pulled in the first direction When a drawer is pulled in first direction 64 , engagement member 86 engages contact surface and imparts a rotational force on cam This rotational force is generally in the direction FIG.

Rotational direction is the opposite of rotational direction The rotation of cam in direction causes an edge of cam to press against crest of lever If sufficient rotational force is exerted on cam , edge will push against lever sufficiently to allow edge to pass by the crest on lever Crest may have an arced or radial surface that allows edge to overcome it without an excessive force spike.

The rotation of cam in direction causes lever to rotate in direction FIG. The rotation of lever takes up any slack in cable 74 by way of engagement member If cable 74 is already in a low slack condition, lever will be prevented from rotating sufficiently far enough to allow edge of cam to reach inner surface portion of lever The full rotation of cam will therefore be prevented.

Engagement member 86 of slidable portion of drawer slide 70 will therefore not be able to disengage from recess in cam Drawer slide 70 will therefore not be able to slide, and the attached drawer will not be able to open.

When cable 74 is changed to the low slack condition by another interlock or lock, cam cannot rotate further than the position depicted in FIG. If cable 74 is not already in a low slack condition, then cam will be able to rotate sufficiently far so that edge contacts inner surface portion When edge is in contact with inner surface , cam has rotated sufficiently far to allow engagement member 86 to disengage out of recess Slide 70 is therefore free to slide and the attached drawer can be fully opened.

When the drawer is fully open, spring 82 exerts a force on lever in a direction opposite to rotational direction This rotational force tends to maintain edge in frictional contact with inner surface portion This prevents edge from sliding back to contact with crest before the drawer is fully closed, and this maintains cam in the proper rotational attitude for recess to accept engagement member When the drawer is being closed, engagement member 86 eventually comes into contact with a contact surface defined on cam As the drawer is fully closed, engagement member 86 pushes against contact surface to thereby cause cam to rotate in a rotational direction that is opposite to direction This rotation causes edge to move out of contact with surface portion and into contact with crest This, in turn, allows lever to rotate in a direction opposite to direction This rotation causes engagement lug to decrease the force on cable The closing of the drawer therefore decreases any tension in cable 74 and increases its slack.

In addition to maintaining cam in its proper rotational orientation when a drawer is opened, spring 82 helps prevent the drawers from rebounding open, or partially open, after they are slammed shut. Without spring 82 , it might be possible for a drawer to be slammed shut with sufficient force such that the rebound of the drawer in first direction 64 might rotate cam and allow the drawer to open up again.

Spring 82 helps prevent such rebounding of the drawers into the open position by biasing lever in a direction that resists the rotation of cam The amount of biasing is sufficient to generally overcome the amount of force typically present in a drawer rebound. The drawers therefore do not rebound open, but rather only open when a user applies sufficient force to overcome the biasing resistance that spring 82 exerts. Cam includes a sloped surface that helps ensure that engagement member 86 is successfully guided back into recess when a drawer is closed.

If engagement member 86 contacts sloped surface , it will exert a rotational force on cam that tends to rotate cam so that recess is properly aligned for receiving engagement member Cam further includes chamfered surfaces a and b.

Chamfered surfaces are designed to urge slidable portion of drawer slide 70 into proper axial alignment with cam Stated alternatively, if slidably portion of drawer slide 70 is compressed toward stationary portion 90 , chamfered surface will contact an end flange on slidable portion and urge it away from stationary portion 90 FIG.

Second chamfered surface b will continue to urge slidable portion away from stationary portion 90 as the drawer is completely closed. Chamfered surfaces a and b therefore serve to help maintain the proper spacing of stationary portion 90 with respect to slidable portion Cam further includes a slide surface that overlays a respective slide surface on lever FIGS.

Slide surfaces and help ensure that cam and lever maintain the proper axial position with respect to each other as they are rotated. Edge of cam may preferably be arced with a radius of 0.

Crest may also be arced with a radius of 0. Other values may, of course, be used. Rounding edge and crest reduces the amount of force necessary to open the drawer. However, rounding these surfaces excessively will cause more of the force exerted on a locked drawer to be transferred to the cable Cable guide 84 , which is depicted in more detail in FIGS. Cable guide 74 may be manufactured of molded plastic. Cable guide 84 preferably snap-fittingly receives cable 84 so that cable 74 may be easily threaded into guide 84 with little danger of cable 74 becoming unthreaded.

Cable guide 84 includes an upper and lower portion a and b. A channel is defined between upper and lower portions a and b. Cable 74 is easily threaded into cable guide 84 by moving cable 74 in direction into channel FIG.

Movement of cable 74 in this direction causes the cable 74 to come in contact with two flexible arms As cable 74 is further pushed against flexible arms , flexible arms begin to flex out of the way until sufficient clearance is provided for cable 74 to pass by flexible arms As soon as cable 74 passes by arms , they snap back to their unflexed condition.

In this unflexed condition, cable 74 is prevented from being retracted out of cable guide 74 in a direction opposite the direction by flexible arms If an interlock 72 is to be removed from the inside of a cabinet, cable 74 can be easily removed from cable guide 84 by manually pressing flexible arms in direction Flexible arms are pressed until sufficient clearance is provided for cable 74 to be retracted out of guide 84 in a direction generally opposite to direction Cable guide 84 includes a spring attachment nub that holds an end of spring 82 opposite spring attachment nub on lever Cable guide 84 includes recesses not shown that receive flanges 98 and that interact with the shoulders to secure guide 84 to stationary portion These recesses are defined on the bottom of cable guide 84 and do not extend all the way through cable guide Shoulders abut against surfaces when cable guide 84 is attached to stationary member 90 FIG.

Second rivet includes a sloped undersurface FIG. If the drawer is subjected to pulling forces, or other types of forces, that tend to cause the drawer to rack or twist especially if made out of thin sheet metal , these forces may move the back end of slideable portion away from stationary portion In such instances, end flange will come into contact with sloped undersurface of rivet as the drawer is closed.

The sloped nature of surface will create a force on end flange of slideable portion that pushes the back end of slideable portion toward stationary portion 90 in a direction generally parallel to pivot axis This helps maintain the proper alignment of the drawer when it is closed.

End flange may be chamfered to correspond to the angle of undersurface in order to more easily force the drawer into the proper alignment. Undersurface also helps to ensure that engagement member 86 stays aligned with cam so that engagement member 86 properly engages cam Without rivet and undersurface , it might be possible for a drawer to become excessively racked such that engagement member 86 no longer contacted cam when the drawer was opened and closed.

Undersurface prevents this possibility. The head of rivet preferably does not extend farther away from the stationary portion 90 than does slideable portion Rivet therefore does not obstruct the drawer attached to slideable portion and the back end of the drawer may extend all the way back to the back end of the drawer slide.

Interlock 72 therefore does not put any space limitations on the dimensions of the drawer other than those required by the drawer slide. As mentioned previously, interlock 72 is designed to transfer only a small fraction of a pulling force exerted on a drawer onto cable This reduction in forces can best be understood with reference to FIG. The tautness of cable 74 prevents interlock 70 from allowing the drawer to be opened.

Line represents the moment arm of cam as it pivots about its pivot point corresponding to the center of rivet Line represents the moment arm of lever as it pivots about its pivot point corresponding to the center of rivet For purposes of discussing the forces applied to interlock 72 , it will be assumed that the cable 74 depicted in FIG. Interlock 72 depicted in FIG. If a person exerts a strong pulling force on the drawer attached to interlock 72 of FIG.

The pulling force exerted on the drawer in first direction 64 is transmitted to cam by engagement member Engagement member 86 engages cam generally in recess The pulling force exerted on the drawer, which is illustrated by the arrow F D , acts on moment arm at a point D. This point corresponds to the location where engagement member 86 contacts first surface of recess Force F D will cause cam to rotate generally in a counter clockwise direction, as depicted in FIG.

This rotation will cause edge of cam to push against crest of lever with a force of F C. F C refers to the amount of force exerted by cam on lever Because force F C will be applied by cam at a location that is farther away from pivot point on moment arm , force F C will be less than force F D.

The force F C will be applied to moment arm of lever at a position C. Position C is located on moment arm at a position that is relatively close to pivot point Force F C will be transferred via lever to cable 74 at a point T. Point T refers to the position where engagement lug engages cable Because point T is substantially farther away from pivot point along moment arm , the magnitude of force F T will be significantly less than the magnitude of force F C.

Further, the spring 81 will exert a force F S along lever at a point S. This force F S acts in opposition to the force F T. Because point S is farther away from pivot point along moment arm , a smaller amount of force F S is necessary to cancel out the force F T. The force F T that is exerted against cable 74 will therefore be greatly reduced as compared to the force F D that is exerted on the drawer.

Cable 74 can therefore resist drawer-pulling forces that greatly exceed its maximum tensile strength. In addition to transferring only a fraction of the force of F D to cable 74 , the arrangement of cam and lever also magnifies the movement of engagement lug with respect to the rotation of cam Stated alternatively, if the attached drawer is moved in first direction 64 a small distance A that causes cam to partially rotate, the distance that engagement lug moves in first direction 64 will be greater than the distance A.

For example, if the drawer is moved in first direction 64 for 0. This feature decreases the amount of movement in the locked drawers that might otherwise be present. A drawer that is locked will therefore only be able to be pulled a small distance before taut cable 74 prevents it from being opened.

Interlock 72 can thus prevent drawers from being opened even for the small distance that might otherwise easily allow an intruder to insert a screw driver, or other lever mechanism, between the drawer and the cabinet. In FIG. The cable 74 would therefore prevent cam in lever of interlock 72 from rotating further than that depicted in FIG.

When two drawers are trying to be opened simultaneously, lever can rotate more than it can in FIG. However, the rotation of lever is insufficient to allow edge of cam to travel past crest Cam therefore does not rotate sufficiently to allow engagement lever 86 to disengage from recess Therefore, neither drawer being simultaneously pulled will allow it to be opened.

Engagement member 86 has moved to a greater extent than in FIGS. This greater movement creates a sufficient force against cable 74 not shown to put the cable in a low slack condition, thereby preventing other drawers from being opened simultaneously.

With surface in contact with surface , lever is prevented from rotating back, thereby maintaining cable 74 in the lower slack state when another drawer is attempted to be opened. An example of a lock that may be used in conjunction with the present invention is depicted in FIGS.

Lock selectively changes the condition of cable 74 from a high slack condition to a low slack condition. Lock includes a hole , which may be a keyhole, into which a key may be inserted, or which may receive a bar that is coupled to a conventional lock cylinder. If hole is a keyhole, insertion of the proper key therein allows a key cylinder to be rotated by the key.

If hole receives a bar, which may be desirable where lock is positioned at the back end of the cabinet, the bar is coupled to any conventional lock in a manner that causes the bar to be able to rotate about its longitudinal axis when the proper key is inserted into the conventional lock.

In either situation, key cylinder therefore will rotate when a proper key is used. Key cylinder includes a pin that moves in a cam track defined in a reciprocating member Reciprocating member is snap-fittingly attached to a cover by way of a flexible arm Flexible arm fits into an aperture defined in cover Flexible arm includes a shoulder that retains reciprocating member to cover when the two are snap fit together. The snap fitting occurs when flexible arm initially contacts cover A cam surface causes flexible arm to flex as reciprocating member is initially pushed toward cover After the two are completely secured together, flexible arm snaps back to its unflexed condition in which shoulder prevents the two members from being separated.

Reciprocating member includes a pair of apertures Cable 74 may be secured to one of the apertures When key cylinder is rotated toward a locking condition, reciprocating member moves vertically upward with respect to cover FIGS.

This vertical movement decreases the slack in cable 74 such that no drawers in the cabinet may be opened. When lock is unlocked, the unlocking rotation of key cylinder moves reciprocating member vertically downward with respect to cover FIGS. This creates sufficient slack in cable 74 for a single drawer to be opened.

Cover may be securely fastened inside of cabinet 60 in any suitable manner. Cable 74 may be secured to one of apertures by threading the cable therethrough and tying it, such as is illustrated in FIGS.

Channel portion 46 is, therefore, captured between pin portion 82 and blocks Member 30 defines a plurality of slots Actuators 34 are positionable at any of the slots to accommodate different types and sizes of drawers.

The system is adaptable to many cabinets, desks or storage unit configurations. The mounting arrangement simplifies assembly. No tools are needed to mount the actuators. A control means shown in the form of an L-shaped bracket is secured to a side of a drawer In the alternative, bracket may be secured directly to the extensible drawer guide Bracket includes a leg which extends into actuator slot With the drawer in the closed position, resilient finger abuts side 14 of the cabinet.

Finger holds pivot pin 82 secure against the inner surface of channel portion 46 and biases actuator 34 in a counterclockwise direction, as viewed in FIG. As shown in FIGS. Linear movement of drawer 16 causes cam portion 86 to engage a cam follower surface 70 of an immediately adjacent control bar The actuator is rotated until the cam portion is disposed between two adjacent control bars 32 in the stack. Beveled portions 92, 94 are angularly related so that cam portion 86 can rotate between adjacent bars through the limited opening of channel As shown in FIG.

Due to the dimensional limitations of the channel, the uppermost bar will engage the upper closed end of the channel.

As a result, no further vertical movement of the bars within the channel is permitted. Detent projections 98 on the actuator are received within detent recesses 74 at the opposed or facing ends 72 of adjacent control bars Should an adjacent drawer be moved towards an open position, its control bracket will not be able to rotate its respective cam actuator Such an actuator will move its cam portion 86 into contact with a cam follower surface of an adjacent lock bar.

Since further vertical movement within main channel 44 is prevented, actuator 34 cannot rotate further and bracket cannot move out of slot Resilient finger biases actuator 34 from its first, inoperative position, as shown in FIG. Finger assures that pin 82 remains in its proper position against the inner surface of attachment channel The resilient bias of finger and the detent structure retains the actuator in its operative position against accidental dislodgment.

Should an actuator move out from between the bars while a drawer is still open, operational problems would result. Due to the detent and finger, jarring, bumping and the like will not dislodge the actuator. When the drawer is closed, as shown in FIGS.

Further rearward or closing movement of the drawer pivots or rotates actuator Detent projections 98 are ramped out of recesses Actuator 34 is rotated until cam portion 86 has been completely removed from between opposed faces 72 of adjacent lock bars against the bias of finger or spring Once removed, vertical movement within main channel 44 will now be permitted.

A lock, as shown in FIG. As shown, a conventional lock cylinder may be mounted on cabinet 10 with the key slot extending through a front portion A lock bar or rod extends from cylinder towards side 14 of cabinet Lock bar is supported in a suitable mounting bracket A lock member is secured to the end of bar As should be apparent from FIG.

Member closes off the channel and prevents vertical movement of the bars within the channel. As a result, the control members associated with each drawer will be unable to pivot actuators 34 to their operative position between adjacent control bars.

The lock system prevents locking of the drawers unless all are in their fully closed position. This prevents a user from inadvertently leaving one drawer partially open. In lateral files having wide drawers, it is preferred that two lock and interlock mechanisms be used, one on each side of the cabinet. The lock mechanism would, therefore, include two rods and members extending towards the sides.

The drawer will be locked at both ends for increased stability. In a unit with only a single drawer, channel 30, a single control bar 32, a single actuator 34, lock cylinder , rod and member can be used to lock the drawer.

The lock and interlock system in accordance with the present invention is readily added to or made a part of a cabinet, desk or storage unit having movable or openable members which can act on the cam actuators through a bracket or other control. Employing an elongated member which defines a plurality of spaced slots for attachment points of the individual actuators permits the actuators to be mounted at selectively different locations.

The system is, therefore, readily adaptable to file cabinets or units having drawers of different vertical heights. The correct location along channel defining member 30 is determined and an actuator is easily positioned through a mounting slot No tools are needed and assembly is simplified.

Only a single control or contact member associated with each drawer or movable member is necessary to shift the cam actuators between their off and on positions.

The detent mechanisms insure that the actuators are maintained in their proper position until the drawer is closed. Bouncing or jarring of the cabinet should not cause the actuator to move out from between adjacent control bars. Finger also insures that the actuator will stay in its proper position.

In order to move out from between the control bars, actuator 34 must move against the resilient bias of finger An alternative embodiment of the present invention is illustrated in FIGS. Embodiment is specifically configured for mounting at the rear center area of a cabinet. As shown, a center upright or channel is fixed to an inner surface of a rear wall of a cabinet. Center upright includes a main channel portion defined by a base and spaced, essentially parallel sides , Center upright further defines a reverse bent shoulder joined to a flange extension In the embodiment of FIGS.

Sides , of channel include spaced vertically extending slots Each control bar includes resilient ears which extend into slots Bars may be snapped into the channel through the open front instead of being stacked from the top or bottom of the channel. Mechanism further includes a cam actuator Legs , which define control slot are configured to receive an actuator control or pin Pin is retained by a bracket Bracket is attached to a bottom of a cabinet drawer at the rear thereof by suitable fasteners Actuator further includes an integral hinge or pivot pin Due to space limitations at the rear of the cabinet, channel is modified from the prior embodiment.

It does not include the separate mounting channel and slots. As is clear from the drawings, a retainer plate or bracket may be used to capture hinge pin against flange extension and the reverse bent shoulder Extension and shoulder define an actuator channel. Extension is formed with slots , Retainer plate defines a horizontally extending slot dimensioned to receive actuator In addition, plate defines angled tabs which are positioned through slots , The bracket or retainer plate is then attached to the center upright by a suitable fastener As in the prior embodiment, actuator includes a resilient arm or finger Finger is illustrated as being formed integral with the main actuator body.

Finger acts as a spring to resiliently bias the cam actuator from a first or inoperative position illustrated in FIG. As shown, cam actuator does not have the detents of the prior embodiment. In certain applications, finger should be sufficient to hold the actuator in its second position.

Finger could be a separate leaf spring member affixed to actuator A separate spring element may be necessary to obtain the required spring force depending upon the material from which actuator is constructed. In existing embodiments, actuator is molded from a plastic, such as that sold under the name Delrin The control or lock bars are molded from a suitable plastic, such as Nylon If less resilient, structural plastics were employed for the actuator, separate spring may be necessary.

Also, a simple coil spring could be extended from a forward point on actuator to a side of the vertical upright to bias the actuator to its second or operative position. Also, fastener could be formed as an integral part of cam retainer plate The fastener could be designed to merely snap into a corresponding aperture formed in center upright With such an arrangement, the actuator cams may be selectively positioned along the center upright or main channel without the use of tools, as in the prior embodiment.

In view of the foregoing description, those of ordinary skill in the art may envision various modifications to the present invention which would not depart from the patentable concepts disclosed. The above description should, therefore, be considered as only that of the preferred embodiment. The true spirit and scope of the present invention may be determined by reference to the appended claims.

All rights reserved. Login Sign up. Search Expert Search Quick Search. Drawer lock and interlock mechanism. United States Patent A lock and interlock mechanism for file cabinets, desks, storage units and the like includes an elongated channel which receives a plurality of elongated lock bars in a vertically stacked relationship.

A plurality of cam actuators are selectively positionable adjacent the elongated channel. Each actuator is pivotally mounted for movement from a first to a second position upon opening movement of a cabinet drawer. The actuators each define cam portions adapted to engage one of the lock bars and shift it vertically.

When one of the actuators is in the second or operative position, the remaining actuators may not be moved or are blocked from movement to their second positions. A detent arrangement on the actuator and lock bars holds each actuator in its second position in a detent type fashion. A control member is mountable on a drawer or drawer guide mechanism to pivot the actuator between its first and second positions.

A lock includes a bar and wedge movable into the channel to prevent movement of the lock bars. This prevents opening of all of the drawers. Click for automatic bibliography generation. Steelcase Inc. Grand Rapids, MI. Download PDF The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1.

An interlock mechanism as defined by claim 1 further including: lock means having a portion engagable with one of said control bars for preventing vertical movement of said lock bars and preventing movement of said interlock cams to their second positions.

An anti-tip interlock system as defined by claim 3 wherein each of said actuators has a spring means for resiliently biasing said actuator from said first position to said second position. An anti-tip interlock system as defined by claim 3 further including detent means on said actuator and said locking member for retaining said actuator in said second position in a positive, detent fashion.

An anti-tip interlock system as defined by claim 5 wherein said detent means comprises one of said actuator and said locking member defining a recess and the other of said actuator and said locking member defining a pin, said pin being disposed within said recess when said actuator is in said second position.

An anti-tip interlock system as defined by claim 6 wherein each of said actuators has a spring means for resiliently biasing said actuator from said first position to said second position.

An anti-tip interlock system as defined by claim 3 wherein said guide track in horizontal cross section includes a base, a first side generally perpendicular to said base and a second side which extends at an acute angle from said base towards said first side.

An anti-tip interlock system as defined by claim 8 wherein said lock members each include a front face and nonparallel sides, one side extending perpendicular to said face and the other side extending at an angle from said front face.

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