Abstract: A bidirectional drawer system is disclosed. The bidirectional drawer system can include a frame. The bidirectional drawer system can also include first and second drawers slidably coupled to the frame. Each of the first and second drawers can be movable between a retracted position and first and second extended positions on opposite sides of the retracted position. In addition, the bidirectional drawer system can include a drawer interlock mechanism. The drawer interlock mechanism can include first and second interlock portions associated with the first and second drawers, respectively. The first interlock portion can have a cam with a cam surface, and a cam follower operable to interface with the cam surface. The second interlock portion can have a cam lock with a cam lock surface, and cam follower operable to interface with the cam lock surface.

Abstract: A refrigerator includes a cabinet that defines a storage chamber, an upper door that is configured to open and close an upper portion of the storage chamber by being drawn in and out, a lower door that is positioned below the upper door and that is configured to open and close a lower portion of the storage chamber by being drawn in and out, an upper door restriction unit that is configured to selectively restrict the upper door from being opened, and a lower door restriction unit that is configured to selectively restrict the lower door from being opened. The upper door restriction unit is configured, based on the lower door being opened, to restrict the upper door from opening, and the lower door restriction unit is configured, based on the upper door being opened, to restrict the lower door from opening.

Abstract: A device for blocking the pull-out movement of pull-out furniture parts including, for each of the pull-out furniture parts, a driver, a blocking unit which has a shiftable actuating, and a retraction spring and blocking rods which cooperate with the actuating parts, a respective actuating part that is shifted due to movement of the driver when the pull-out furniture part is pulled out and that displaces a blocking rod in a longitudinal axis direction, the blocking rods being blocked from any further axial displacement by a stop. Each of the blocking units has a pivotable catch arm that swivelable about a stationary pivot axis lying parallel to the longitudinal axes of the blocking rods and is loaded by the refraction spring, the catch arm being pivoted by the driver from an initial position to a final position when the pull-out furniture part is pulled out, thereby shifting the actuating part.

Abstract: A medicine supply apparatus that subdivides and supplies medicines is provided. The medicine supply apparatus includes: a cassette unit that is provided movably between a fixed position and a drawn position, and can temporarily retain the medicines in a subdivided manner; a cover provided movably between a closed position to cover the cassette unit from above and an opened position where the cassette unit is exposed; and an association mechanism that associates operations of the cassette unit and the cover, wherein the association mechanism restricts an operation of the cover so as to keep the cover in the closed position when the cassette unit is in the drawn position.

Abstract: A medication dispenser provides automation to the steps of locating and acquiring medications or supplies to be administered to a patient. The medication dispenser includes one or more modules housing one or more compartmentalized drawers. Access to each drawer is controlled by a lockable door, and each the drawer may only be slid from the module housing the drawer in response to a signal. A series of lights direct the user to the appropriate drawer and the appropriate compartment of the relevant drawer to remove the appropriate medication or supply.

Abstract: An enclosure includes a chassis and a bracket. The chassis comprises a rear panel with a latch hole. The bracket comprises a first sidewall. A resilient piece and a sustaining piece are located on the first sidewall. The resilient piece is elastically deformable as the bracket is rotated relative to the chassis, from a first position to a second position. When the bracket is in the first position, the resilient piece is engaged in the latch hole, and the sustaining piece is located between the first sidewall and the rear panel; when the bracket is in the second position, the resilient piece is disengaged from the latch hole, and the sustaining piece is engaged with the rear panel.

Abstract: A tool cabinet apparatus with a safety lock system and a method of manufacturing the cabinet. The cabinet includes a shell or frame, an inner panel with openings for installing drawer slides, a plurality of four different drawer configurations, the drawer configurations including drawers of three inches, five inches, seven inches and eight inches, and a block guide attached to the inner panel for stacking three different configurations of lock blocks. One block configuration includes an upper protrusion, another block configuration includes a lower protrusion and a third block configuration is a spacer with no protrusions. To achieve universality, the two blocks with upper and lower protrusions are paired and between such pairs there are three of the third blocks to accommodate each of the eight inch drawers, two of the third blocks to accommodate each of the seven inch drawers, one third block to accommodate each of the five inch drawers and no third blocks to accommodate each of the three inch drawers.

Abstract: An anti-tip lock assembly for a storage compartment includes a pair of geared actuators mounted on a base abutting against a follower. The follower and the base are configured to travel a limited distance along a vertical track installed in a storage unit. When the compartment is closed, the actuators are aligned with the track. When the compartment is opened, the actuators are moved out of alignment to block access to the moving components of the assembly. When the anti-tip lock assembly is operational, the array of like anti-tip assemblies in the track allow displacement of only one pair of actuators to occupy the limited distance at one time. A security bar array interacts with the actuators and other assemblies in the storage unit, to prevent simultaneous opening of two or more compartments. The security bar is provided with the track to lock and unlock the assembly.

Abstract: A medicine dispensing device has a device body (1), shelf members (2) arranged in the vertical directions in the device body (1), and a medicine conveyance member (3) for conveying medicines (D), received in the shelf members (2), on one by one basis from the front face side of the device body (1). A shelf member (2) has cassettes (26) in which medicines (D) are received in line, a pusher (31) for pushing the medicines in the cassettes (26) toward the front face side of the device body (10), and a constant load spring (32) for applying a constant load to the medicines (D) received in the cassettes (26) through the pusher (31). To fill the cassettes (26) with the medicines (D), the shelf member (2) can be pulled out from the front face side of the device body (1) and then positioned by pivoting the shelf member (2) so as to face obliquely downward.

Abstract: A multi-door enclosure includes an enclosure body, a primary door having an actuator and a secondary door. An interlock member having a holding section extends between the primary door and the secondary door. As the primary door closes, the actuator contacts the interlock member to translate the interlock member towards the secondary door until the holding section engages the secondary door.

Abstract: A locker is provided. The locker comprises a base defining a storage space, a door coupled to the base and rotatable relative to the base between an open position and a closed position, and a latch bar moveable relative to the door between an extended and a retracted position. The latch bar defines at least one guide slot configured to receive a projection for guiding the movement of the latch bar between the extended position and the retracted position. The at least one guide slot is at least partially non-linear. The latch bar is moved to the extended position to secure the door in the closed position.

Abstract: A switching cabinet arrangement equipped with a main door and at least one auxiliary door having a locking device mounted on them, which has an actuating mechanism that causes an actuating device to unlock the auxiliary door as the main door is opened. The locking device has a blocking mechanism that acts on the actuating device and prevents the main door from closing when an auxiliary door is open.

Abstract: An anti-tip linkage mechanism for vertical file cabinets of the type having drawers and/or pivotal front panels includes molded polymeric cam follower housings that snap-fit onto each of the slide channels for the drawers or panels and non-circular connecting rods attached to cam actuators that enable interaction of the anti-tip mechanisms incorporated with each slide channel. Lock actuated auxiliary cam mechanisms and panel locking assemblies controllable by a single cabinet lock are connected with a cabinet lock by linkage bars or cables.

Abstract: A storage unit providing a storage space is disclosed. The storage unit comprises a base and a panel moveable relative to the base to expose and conceal a storage space a handle configured for at least vertical movement, at least one connector configured for at least vertical movement, and a member coupled by the connector to the handle through the panel and configured for at least horizontal movement.

Abstract: A refrigerator is provided with a cabinet having a door that is openable by a user to provide access to a refrigeration compartment. A storage bin is located in the refrigeration compartment and accessible upon the opening of the cabinet door. A mounting system is arranged for the storage bin, supporting the storage bin for movement into and out of the refrigeration compartment. A latch is carried on the cabinet door to be selectively engaged by the user with a latch receiving portion of the storage bin. When the latch is engaged with the latch receiving portion, the storage bin will be pulled out of the refrigerator upon the opening of the cabinet door, and when the latch is disengaged from the latch receiving portion, the storage bin will remain in the refrigeration compartment, unless manually moved by the user.

Abstract: A locker is provided. The locker comprises a base defining a storage space, a door coupled to the base and rotatable relative to the base between an open position and a closed position, and a latch bar supported at an interior side of the door by at least one projection that engages at least one guide slot in the latch bar. The latch bar is moveable parallel to the door between an extended position and a retracted position. The latch bar is biased toward the extended position to secure the panel in the closed position. The extended position is horizontally and vertically offset from the retracted position.

Abstract: A protection mechanism is provided for protecting connectors which are to be connected to electronic interfaces at a rear panel of a computer chassis. The protection mechanism includes a bracket secured to the rear panel, a first cover pivotally attached to the bracket for shielding the connectors, a second cover pivotally attached to the bracket, and a locking device. The first cover defines a plurality of slots for extension of cables of the connectors therethrough. The second cover is closed to abut against a side panel of the computer chassis to prevent the side panel from withdrawal. The locking device is so arranged between pivot ends of the first and second covers, that one of the first and second covers can be opened only when the other one is opened.

Abstract: An anti-tip linkage mechanism for vertical file cabinets of the type having drawers and/or pivotal front panels includes molded polymeric cam follower housings that snap-fit onto each of the slide channels for the drawers or panels and non-circular connecting rods attached to cam actuators that enable interaction of the anti-tip mechanisms incorporated with each slide channel. Lock actuated auxiliary cam mechanisms and panel locking assemblies controllable by a single cabinet lock are connected with a cabinet lock by linkage bars or cables.

Abstract: The present invention relates a door assembly for a washing machine which prevents a tub from being enclosed when the washing machine is not in operation.

Abstract: A cabinet has a housing, multiple tracks, multiple drawers, a safety device and a lock assembly. Each track has a sliding rail having a guiding notch and a locking hole. The safety device is mounted in the housing and has a fixed base, a moving base, multiple locking blocks, multiple locking tongues, multiple guiding posts and multiple guiding blocks. The locking blocks are securely attached to the moving base and each have a locking tab. The locking tongues are mounted respectively on the drawers and selectively aligning with the locking tabs on the locking blocks. The guiding posts are mounted on the moving base and locate respectively above the locking blocks. The guiding blocks are slidably and respectively attached to of the tracks. Each guiding block has an inclined face and corresponding to and selectively abutting with a corresponding one of the guiding posts.

Abstract: A storage unit providing a storage space is disclosed. The storage unit comprises a base and a panel moveable relative to the base to expose and conceal a storage space a handle configured for at least vertical movement, at least one connector configured for at least vertical movement, and a member coupled by the connector to the handle through the panel and configured for at least horizontal movement.

Abstract: A drawer slide structure comprises a slide base and a homing interlocking mechanism. The slide base is for holding passive and active movable devices. The active movable device is for shifting the passive movable device by outward movement of the drawer. The homing interlocking mechanism comprises a base, first and second pivotal rotating devices, and an elastic device. The homing interlocking mechanism is attached to the slide base to facilitate assembling production and damage repair. When the drawer shifts outward, the active movable device shifts the second and first pivotal rotating devices until being blocked by the retaining pillar and fixed by the pulling force of the elastic device. Besides, the lifting blocks on the first pivotal rotating device push the movable braking plates for achieving the purpose of interlocking. When the drawer shifts inward, the drawer slide shifts to its initial position automatically by the elastic device.

Abstract: A mobile tool chest with a safety device has a chest, a top cover, locking strips and drawers. The chest has a top. The top cover is pivotally attached pivotally to the top of the cabinet. The locking strips are slidably mounted inside the chest and are connected to the top cover and have locking holes and inner surfaces. The locking holes are formed through the inner surfaces of the locking strips. The drawers are mounted slidably in the chest, and each drawer has a rear end and a hook. The hooks are attached respectively to and protrude from the rear ends of the drawers and selectively engage the locking holes in locking strips when the top cover is closed. When the top cover is closed, the locking strips still allow the drawers to push back into the chest and the locking strips still can lock the drawers.

Abstract: A storage unit providing a storage space is disclosed. The storage unit comprises a base and a panel moveable relative to the base to expose and conceal a storage space a handle configured for at least vertical movement, at least one connector configured for at least vertical movement, and a member coupled by the connector to the handle through the panel and configured for at least horizontal movement.

Abstract: A drawer locking apparatus of a cabinet, including a cabinet body, at least one drawer slidably disposed in the cabinet body, a base seat mounted in the cabinet body, a slide section slidably fitted in the base seat, an engaging section and a dogging device. One end of the engaging section is disposed on the slide section. The other end of the engaging section has a hook plate with a guide slope for hooking rear sideboard of the drawer. The dogging device serves to drive the slide section to slide between a first position and a second position.

Abstract: A storage unit providing a storage space is disclosed. The storage unit comprises a base and a panel moveable relative to the base to expose and conceal a storage space a handle configured for at least vertical movement, at least one connector configured for at least vertical movement, and a member coupled by the connector to the handle through the panel and configured for at least horizontal movement.

Abstract: An upright storage cabinet has a lock assembly which operates a vertically movable lock bar to simultaneously lock all drawers of the cabinet. The lock assembly includes a rotatable cam body which has a resiliently deflectable cam that projects radially therefrom. The cam body is rotatable between a locked position wherein the cam rotates a drive element to vertically displace the lock bar into engagement with the drawers, and an unlocked position wherein the cam allows the drive shaft to return to an initial position which disengages the lock bar from the drawers. The cam generates a driving force on the drive shaft during rotation of the cam body and is also resiliently deflectable to accommodate dimensional variations which varies the radial position of the drive shaft relative to the drive element.

Abstract: A storage unit providing a storage space and method of forming a door and frame for a storage unit are disclosed. The storage unit comprises a base, a panel movable between an open position and a closed position, and a retaining member. The retaining member is configured for movement between a first position and a second position, the first position being vertically and horizontally offset from the second position. The retaining member engages the base when the panel is in the closed position and the retaining member is in the first position. The method comprises machining a first groove on a first surface of a sheet, and machining a second groove on a second surface opposite the first surface and at least partially offset with the first groove. The door is then rotated so that the first surface of the door is generally in the same plane as the second surface of the frame.

Abstract: A drawer interlinking system for a storage cabinet is disclosed herein. The cabinet includes a frame, a first sliding assembly, and a second sliding assembly. Each sliding assembly is movable between an extended position and a retracted position relative to the frame. The frame includes a flexible member coupled at a first end to the first sliding assembly. The line is directed by a first guide coupled to the frame in association with the first sliding assembly, a guide assembly coupled to the frame and spaced apart from the first guide, a glide assembly coupled to the frame by a tension member, and a second guide coupled to the frame in association with the second sliding assembly and spaced apart from the guide assembly. The flexible member is coupled at a second end to the second sliding assembly, so that when one sliding assembly is extended from the frame the other sliding assembly is retracted into the frame. The guide assembly can comprise a left pulley connected to a right pulley.

Abstract: A multi-door enclosure for housing electrical equipment has a mechanical interlock device that interacts with a main primary door of the enclosure and the existing latch mechanisms of each of the remaining secondary doors to prevent such secondary doors from being opened unless the primary door is first opened. The interlock includes a lever arm that engages and is displaced by the primary door when closed. Such movement of the lever arm is transmitted via a mechanical linkage system to move one or more latch disabling members into disabling relation with the latch mechanisms of each of the secondary doors in order to retain the latch mechanisms in their latched positions and thereby lock the secondary doors in the closed position. Opening the secondary door allows the lever arm to return to its initial position which in turn retracts the latching members and allows unlatching and opening of the secondary doors.

Abstract: A multi-door enclosure for housing electrical equipment has a mechanical interlock device that interacts with a main primary door of the enclosure and the existing latch mechanisms of each of the remaining secondary doors to prevent such secondary doors from being opened unless the primary door is first opened. The interlock includes a lever arm that engages and is displaced by the primary door when closed. Such movement of the lever arm is transmitted via a mechanical linkage system to move one or more latch disabling members into disabling relation with the latch mechanisms of each of the secondary doors in order to retain the latch mechanisms in their latched positions and thereby lock the secondary doors in the closed position. Opening the secondary door allows the lever arm to return to its initial position which in turn retracts the latching members and allows unlatching and opening of the secondary doors.

Abstract: An interlock structure of the cable type for stacked plural drawer cabinet structures which limits the opening of drawers to a single drawer and prevents plural drawers being opened at the same time. An elongate base or frame is mounted in the cabinet adjacent to the drawers. The frame supports plural (one for each drawer) eccentric blocker elements and adjacent follower elements and supports at one end a provided slider element having limited movement. A cable is attached at one end to the slider and at the other end to the frame with an intermediate loop which provide two cable courses, one of said courses threaded on the successive blockers and the other course operably threaded over the respective adjacent followers maintaining the respective blockers and followers in operative engagement. The blockers are moved by interference engagement by a selected drawer.

Abstract: A file cabinet having vertically arranged horizontally movable drawers and an anti-tip lock mechanism that permits movement of a single drawer from its closed to its opened position while simultaneously locking the remaining unopened drawers against movement from their closed to their opened positions.

Abstract: In a filing cabinet arrangement of vertically disposed drawers mounted on progressive two or three channel drawer slides an improved interlock or anti-tip mechanism is used. By means of a uniquely configured cam, the cabinet of drawers provides both an anti-tip mechanism as well as an anti-rebound quality which ensures that a drawer, once returned to the cabinet, does not rebound outwardly. In addition, this device will act as a security lock mechanism in conjunction with installed locking apparatus. The particular inventive features lie in the simplicity of the mechanism and in its space saving qualities. No additional space in a cabinet, other than that required for the drawers and the drawer slides, is necessary. The mechanism is economical, simple and worry free in its operation. It is adaptable to any file cabinet situation where two or three channel progressive drawer slides are used.

Abstract: An interlock assembly (20) for two or more horizontally sliding drawers (11, 13) in a cabinet (10) to prevent opening more than one drawer at a time is described. The interlock assembly is characterized by each drawer having rotating cam members (21, 23) with lobes (21A, 23A) and valleys (21B, 23B) which mate with blocks (25, 27, 29, 31) having corresponding lobes (25A, 27A, 29A, 31A) and valleys (25C, 27C, 29C, 31C). When a first cam member (23) is rotated by opening a drawer (13) the lobes (23A) of the cam member (23) engage lobes (29A, 31A) of the corresponding blocks (29, 31) to move the blocks (25, 27, 29, 31 ) and cam member (23) towards the cabinet (10) to provide the interlock for the drawers so that the other drawer (11) can not be opened.

Abstract: An interlock mechanism is provided for furniture units and the like of the type having two or more drawers, and functions to permit only one of the drawers to be opened at any given time, so as to avoid tipping, etc. The interlock includes a plurality of blocks slidably mounted in a vertical guide, with an actuator provided for each drawer. Each actuator comprises an arm having an upper portion pivotally mounted to the guide, and a lower portion with a notch shaped to selectively engage a pin on the associated drawer, such that closing and opening the drawer rotates the arm between corresponding unlocked and locked positions. Each actuator also includes a wedge pivotally connected with the lower portion of the arm, and slidably supported on the guide to reciprocate inbetween adjacent blocks when the associated drawer is opened, so as to lock closed all remaining drawers.

Abstract: A multi-drawer file cabinet having an interlock mechanism to prevent opening of more than one drawer at a time. The interlock mechanism includes modular lock bars for accommodating half-height and full-height drawers in any desired combination. A security lock mechanism is actuatable without requiring shifting of the lock bars. Doors may be provided for the cabinet spaces and anti-rebound mechanisms are provided for the drawers and/or doors.

Abstract: A filing cabinet includes a safety interlock that prevents more than one drawer from being opened at a time. The safety interlock comprises a column of endwise abutting catches mounted to the cabinet wall for vertical reciprocation thereon. The ends of the catches are formed with tabs. The tabs of adjacent catches cooperate to define gaps of predetermined spacing. Actuator means on each cabinet drawer are aligned with the catch gaps. When a selected drawer is opened, the actuator means thereon enters the associated gap and displaces upwardly any higher catches. Upward displacement causes the gaps between higher adjacent catches to be displaced into the paths of the actuator means of any higher drawers, thereby preventing any higher drawers from being opened. The retainer of an open drawer blocks upward displacement of any lower catches, thereby preventing lower drawers from being opened. A slide is reciprocably mounted on each retainer.

Abstract: The present invention relates to a plastic tool box having a locking mechanism for the lid and drawer. When the locking mechanism is in the unlocked position, the drawer may be opened regardless of lid position; when the locking mechanism is in the locked position, the drawer may be opened only when the lid is open.

Abstract: A file storage assembly having a string or stack of elements vertically disposed along one side to allow only one drawer to be opened at a time. A shaft (48) having inclined cam surfaces (50,52) at opposite ends is associated with each drawer and includes a pinion (44) rotated by engagement with a rack (46) on the drawer during opening of the drawer. Upon rotation of the shaft (48), the cam surfaces (50,52) at the ends thereof vertically move the shafts (48) of the other drawers to vertically move one of a pair of locking lugs (64) on the shafts (48) into horizontal alignment with a lug (78) on the drawer (38) to prevent opening of all other drawers. A key projection (66) extends from the housing between each pair of lugs (64) upon rotation of the shaft (48) during opening movement of the drawer to prevent vertical movement of the operative shaft (48).

Abstract: A locking system for the drawers of a desk or file cabinet, etc., comprising a latch plate on each drawer, a simultaneously movable set of locking pins, one for each latch plate, and a line of discrete cylindrical elements to shift the locking pins from a single location, as by key or the like. The discrete elements are spring held, top and bottom, and can be jolted aside momentarily as an unlocked drawer is slammed to locked position.

Abstract: A container for receiving currency bills or the like includes a plurality of adjacent compartments (22) and a housing (12) enclosing these with a closure unit (18) which is designed for selectively unblocking a predetermined compartment opening. The compartments are made up of individual compartment receptacles (22) which are arranged to be movable in the housing (12) parallel to the direction in which the compartment opening points and to which a positioning device (136) is assigned, through which respectively one compartment receptacle (22) can be moved between a waiting position, in which it is completely inside the housing (12), and an access position in which it partially protrudes out of the opening which is unblocked by the closure unit and substantially corresponds to the cross section of the compartment receptacle (22).

Abstract: Device consisting of a safety bar (2) preventing the simultaneous opening of a plurality of drawers (A, B, C), said bar being free to slide between a bottom stop (D) and a top stop (E) in a slide guide (G) fixed against a side wall (100) of the cabinet (1), parallel to a vertical edge (101) bordering the face on which the drawers open. This bar carries pivots provided with rotating rollers (1A, 1B, 1B', 1C) judiciously distributed over its face directed towards the drawers, and cooperates with rails (120, 20, 30) fixed on a side face of each drawer, parallel to and near its bottom.

Abstract: An interlock system for a filing cabinet or the like preventing any two drawers from being open at one time, the system using a generally vertical line of contacting balls as a lock, and means on each drawer to rigidify the line of balls upon the opening of a single drawer, and returning the line of balls to a loose, unlocked condition upon closing the drawer.

Abstract: A drawer unit having a lock mechanism for controlling a plurality of drawers. The lock mechanism employs a vertically elongated lock bar having a plurality of vertically spaced locking tabs mounted thereon at selected intervals, which lock tabs are permanently fixed to the bar. The drawer unit employs a cabinet which mounts therein the plurality of drawers, which plurality can vary in number and/or size to permit the user to select the optimum drawer arrangement. Irrespective of the number and/or sizes of drawers selected, the same lock bar cooperates with and lockingly holds all of the drawers in a closed locked position when activated, without requiring any rearrangement of the lock bar. An open drawer can also be readily moved into its closed position without undue effort since the lock bar is displaced against the urging of a spring so as to permit the lock stop on the activated drawer to move therepast.

Abstract: A lock system for a desk drawer, a cabinet door or the like includes a hinge consisting of a first supporting hinge plate, a second locking hinge plate and a joint rotatably connecting said first and second hinge plates. The hinge, when locked, has a substantially planar configuration and an unlocked configuration in which the second hinge plate is substantially perpendicular to the first hinge plate. The hinge is positioned at the opposed, adjacent interior edges of a first door panel of a cabinet, desk drawer or the like and a second door panel of an adjacent cabinet, desk drawer or the like with the first supporting hinge plate being rigidly attached to the interior surface of the first door panel adjacent to the second door panel.

Abstract: A filing cabinet with a frame defining an enclosure and having two or more drawer openings; a door is hinged to the frame at the bottom of each opening, each door being swingable downward to reach a substantially horizontal position and swingable upward to reach a substantially vertical closed position; links are provided to connect the frame to the door to hold the door in the horizontal position; a drawer is provided at each opening and is mounted on rollers so that it may be rolled out of the enclosure onto the door in the opened position; the doors are locked in the vertical position when one of the doors is in the horizontal position.

Abstract: An anti-tip blocking device is disclosed for preventing the opening of more than one file drawer in a file cabinet at the same time. The device includes a plurality of locking bars and cam elements vertically stacked in a vertical channel one upon the other alternately to slide vertically therein. The cam elements are engaged by pins carried by the file drawers whereby opening of any file drawer requires additional vertical space in the channel to be occupied. With the free vertical space in the channel limited to the space required for the opening of one drawer, once any one drawer is opened, no other drawer may be opened. The improvement disclosed involves providing each cam element with a cylindrical bearing surface to contact the vertical channel so that the cam element is vertically slidably in the channel while being rotatable about the axis of the cylindrical bearing surface.

Abstract: A locking device for interlocking drawers in a file cabinet includes an elongated L-shaped locking member pivoted adjacent to an interior corner of the cabinet and cooperating with a fixed arm on each of the cabinet drawers so that withdrawal of any drawer pivots the L-shaped member to prevent the withdrawal of any other drawer.

Abstract: An interlock mechanism for use with a plurality of vertically stacked units such as disk drives wherein said mechanism allows only one unit to be withdrawn or extended from the stack at a time.