Abstract: A door lock assembly is provided for secure multipoint locking of a door. The lock assembly comprises a main lock cartridge in combination with one or more remote secondary lock cartridges mounted at one side edge of a door, with the main lock cartridge having an actuator for manipulating a plurality of lock members. In one preferred form for use with a hinged or swinging door, the lock members comprise a plurality of latch bolts movable to a first extended position for normal door latching, or to a second and further extended position to function as multiple deadbolts. In an alternate preferred form for use with a sliding door, the lock members comprise headed latch pins for engaging keeper plates on the adjacent door jamb.

Abstract: A cooking apparatus, a latching construction therefor and methods of making the same are provided, the latching construction comprising a frame carrying a movable latch member and a drive unit operatively interconnected to the latch member to move the latch member between the latching and unlatching positions thereof, the drive unit comprising a cylinder having opposite ends and a movable piston extending from one of the opposite ends and being operatively interconnected to the latch member, the drive unit having an actuator to extend the piston so as to be adapted to move the latch member from its non-latching position thereof to its latching position thereof when the actuator is first actuated for a door locking operation thereof, the drive unit having a rotatable cam operatively interconnected to the piston and to the latch member so as to be adapted to permit the piston to be retracted after the latch member has been moved to the latching position thereof by the first actuation of the actuating unit while

Abstract: A door latch operating assembly is capable of rotating a door latch arm between a first locked position for locking a door in a closed position and a second unlocked position for unlocking the door. The latch operating assembly includes a lock platform and a handle having a gripper portion which is grasped by a person's hand for rotating the handle, and a shaft portion attached to the gripper portion and extending therefrom through an opening in the lock platform. A driver cam has a housing which receives the shaft portion of the handle, and at least one wing member extending laterally outwardly from one side of the housing. The wing member has an upwardly facing engaging surface for engaging a link which is linearly movable with respect to the lock platform. The link has a bottom edge portion with a downwardly facing engaging surface which bears against the upwardly facing engaging surface of the wing member of the driver cam, and a top edge portion with an upwardly facing engaging surface.

Abstract: A dual function lock mechanism includes a body (30,32), and a cam member (34) mounted on the body for rotation about an axis. A retractor (36) is adapted to drive a latch bolt and is supported for sliding movement transversely with respect to the axis. Means is provided to slide the retractor in a first direction to retract the latch bolt from a latch position to a release position. By virtue of respective cooperable mutually engageable formations (41,72) on the cam member and on the retractor means, a predetermined first rotational movement of the cam member is effective to slide the retractor in a direction opposite the said first direction to move the latch bolt from the latch position to an extended lock position, and a predetermined opposite rotational movement is effective to return the latch bolt from the lock position to the latch position. Detent means (64) is provided to engage and thereby normally prevent the retractor from moving the latch bolt from the lock position to the latch position.

Abstract: A latching device to be employed on farm tractor hitches or on large swinging gates or the like, wherein camming structure is provided for actuating a latch bolt, and wherein the camming structure is in the form of a downward, angled slot in a cylinder wall, and a camming arm extending out through the slot, whereby initial rotation of the arm will allow the bolt to move downwardly in the cylinder to a latching position extending through aligned apertures in the structures being latched together.

Abstract: A lockable latch assembly including a base, a latch member pivotally supported on the base for movement between a latched position and an unlatched position, and a locking mechanism housed in the base. The locking mechanism comprises a driver member that is pivotable between a lock position and an unlock position, the driver member including an elliptical outer cam surface. The locking mechanism also comprises a locking member including a flexible band surrounding the cam surface and slidingly engaging the cam surface, the band being deformable to conform to the contour of the cam surface, and a pair of diametrically opposed locking bars extending radially outwardly from the band. Pivotal movement of the driver member actuates reciprocal movement of the locking bars between extended and retracted postions by deforming the band. When in the extended positions the locking bars are engagable with the latch member to restrict movement thereof from the latched position.

Abstract: A latch mechanism includes a cylindrically shaped rotating cam having a small radius portion and a large radius portion that are spaced from each other along a circumference of cylinder. A ball is seated against the cam. The ball is forced outward when it is seated in the small radius portion of the cam, and is allowed to move inward when it is seated in the large radius portion of the cam. A first hollow latch pin is provided, having an indentation at one point on the outer surface thereof into which the ball can seat. A second smaller size latch pin, also having an indentation in one point on the outer surface thereof into which the ball can seat, is insertable within the first hollow latch pin, to thereby allow multiple objects to be secured by the latch mechanism. A housing supports and facilitates movement of the cam, the ball and the two latch pins.

Abstract: An improvement in an actuator of the type having a slide plate with an L-shaped slot, guide structure for movement of the slide plate in a reciprocating path between locked and unlocked positions, structure for connecting the slide plate to a locking member so that the locking member follows reciprocating movement of the slide plate, a crank for rotation about an axis and having a pin offset from the axis, and structure mounting the crank to the channel so that the crank is rotatable back and forth about its axis through a predetermined range with the pin in the slot to thereby cause the pin to engage and shift the slide plate between its locked position and its unlocked position upon the crank being rotated. With the pin at the juncture of the two slot legs, the slide bar can be shifted to its unlocked position without rotating the crank. With the pin so situated and all drawers closed, the crank is jammed and cannot be rotated.

Abstract: A modular lock unit including a carrier frame and a heavy base plate and framework is positioned in a steel door jamb. A lock solenoid and an unlock solenoid are connected to opposite ends of a bolt cam slide extending through a vertical slot in a horizontally reciprocal bolt so that vertical movement of the slide effects camming movement of the bolt between an extended locking position and a retracted unlocking position. The slide includes a central slot oriented at approximately 45.degree. and having vertical deadlock end portions. A lock pin in the bolt extends through the central slot of the slide and enters the deadlock portion of the bolt when in either its extended or retracted position. Camming movement of the bolt is effected by the front and rear edges of the slide engageable with front and rear follower surfaces in the slot in the bolt.

Abstract: A door lock is provided for use with a building wall having a door opening formed by building framing members and in which a door is pivotally mounted and movable between a closed and an open position. The door lock has a locking bolt which is slidably mounted by a slide block to the building framing members on the inside of the wall. A key operated assembly accessible from the outside of the wall is operable to move the locking bolt between a locking position in which a portion of the bolt extends behind the door and thus into the path of the door swing, and a nonlocking position in which the bolt is retracted into the slide block and thus spaced downwardly from the path of the door swing. Since the slide block is mounted to the building framing member, typically a two by four wooden stud, the door lock utilizes the strength of the building itself rather than just the strength of the door or its jamb.

Abstract: A modular lock unit including a carrier frame and a heavy base plate and framework is positioned in a steel door jamb. A lock solenoid and an unlock solenoid are connected to opposite ends of a bolt cam slide extending through a vertical slot in a horizontally reciprocal bolt so that vertical movement of the slide effects camming movement of the bolt between an extended locking position and a retracted unlocking position. The slide includes a central slot oriented at approximately 45.degree. and having vertical deadlock end portions. A lock pin in the bolt extends through the central slot of the slide and enters the deadlock portion of the bolt when in either its extended or retracted position. Camming movement of the bolt is effected by the front and rear edges of the slide engageable with front and rear follower surfaces in the slot in the bolt.

Abstract: A locking device for a door. The device includes at least one locking element movably mounted on the door. The door is locked by extending each locking element along one diagonal line of the door until the outer edge of the element enters into a recess in adjacent sides of the door frame. The door is unlocked by retracting each locking element along the diagonal line to the point where the outer edge of the element has exited from the recess and the inner edge is resting on the other diagonal line of the door.

Abstract: A lock mechanism for a closure member, such as a sliding door. The mechanism comprises a housing for securement to the sliding door. A locking slide member is slidingly guided in the housing. The slide member has a locking element to engage and disengage with a keeper member secured to the frame of a door opening adjacent the sliding door. A slide activating rotating knob is rotatably retained in the housing for limited rotating displacement therein. A slide displacing pin is secured to the rotating knob and offset from the central rotating axis of the knob. The slide member has a pin receiving slot which coacts with the pin whereby limited rotation of the knob causes displacement of the pin to frictionally engage the slide in the slot to cause limited sliding displacement of the slide between a locked and unlocked position. The pin and the slide also coact, when in the locked position, whereby to provide positive interlocking to prevent displacement of the slide by force applied thereto.

Abstract: A modular lock unit has a lock solenoid and an unlock solenoid connected to opposite ends of a bolt cam slide for operating a horizontally reciprocal bolt. A centered circuit automatically locks the door when it is closed and automatically retracts the bolt in the event that any obstruction is provided in the strike in the door so as to preclude damage to the solenoid employed for extending the bolt. A time delay relay in the circuit terminates power to the lock solenoid after it has been actuated for 1.5 seconds so as to preclude solenoid damage if the bolt is blocked.

Abstract: A flush type rotary drive means which is caused to move between a position flush with a surrounding surface and a protruding position as the latch is moved between its locked position and its unlatched position, the drive means, by reason of its protruding position, being readily visible to indicate the partially or completely unlocked condition of the latch; one embodiment being arranged to move a reciprocable latch; another embodiment being arranged to turn a rotary latch.

Abstract: A lock assembly including a novel retaining strap for securing a lock cylinder within the assembly. The lock assembly is designed so that one of two different degrees of bolt extension can be chosen during assembly of the device. In addition the assembly incorporates a dowel pin to increase the strength of the joint between the lock bolt and a lock bolt extension connected to the lockbolt.

Abstract: In a first embodiment thereof, the locking means comprises an axially-translatable bolt slidably disposed within a cylinder. The cylinder has an axially-extended slot formed therein, and a pin fixed in the bolt projects therefrom, through the slot, to engage a camming slot formed in a sleeve which envelops the cylinder. A hollow cap-actuator envelops the camming-slotted sleeve, and a drive rib formed in the cap-actuator engages an axial separation in the sleeve to cause (a) the sleeve to rotate, when the cap-actuator is turned, (b) to cause the pin to travel along the camming slot, and (c) to effect extension and retraction of the bolt.

Abstract: A latching mechanism for a window or door closure hingedly mounted on a fixed frame comprising a control cam and catch fixed to the hinged side of the frame, a driving rod slidably mounted on the closure, a dog mounted on one end of the driving rod for latchingly engaging the catch, and a cam follow mechanism connected to the opposite side of the driving rod for engaging the control cam so that the dog is moved by the driving rod in latching alignment with the catch when the closure is moved to the closed position relative to the frame.

Abstract: A lock assembly for retaining a tiltable cab structure in a normal operating position relative to the body structure of a truck. Each lock assembly comprises two transversely spaced latches, each including a keeper attached to one of the structure, a latch member attached to the other structure and mounted for movement into and out of a closed position to effect latching engagement with the keeper, and an operating lever movable between an unlocking position in which the latch member is disengageable with the keeper and a locking position in which the latch member is retained in engagement with the keeper. A releasing linkage interconnects the operating levers for simultaneously moving the operating levers between the locking and unlocking positions.

Abstract: A flush type rotary drive means which is caused to move between a position flush with a surrounding surface and a protruding position as the latch is moved between its locked position and its unlatched position, the drive means, by reason of its protruding position, being readily visible to indicate the partially or completely unlocked condition of the latch; one embodiment being arranged to move a reciprocable latch; another embodiment being arranged to turn a rotary latch.

Abstract: A transport container especially suitable to be supported on a cart or trolley, and also suitable for use in an aircraft, if desired, is constructed as a parallelepiped. Two oppositely located doors are connected by hinges to a frame structure. The hinges form part of the frame structure and allow the doors to open through an angle of 270.degree.. Corner braces having mutually perpendicular tenons mate with tubular metal stock such as sectional rods to form the frame of the container. The metal rods have U-rails for the mounting of wall, floor, door, and cover plates. A door locking mechanism is located in a hollow chamber of a door member or stile. The locking mechanism includes an interconnection of a sliding bar and two lock bolts. The rotation of a door handle actuates the lock bolts which retract into the stile for opening the door.

Abstract: The present invention is an electric security lock which not only provides an alarm signal to an alarm device, but which also has a push bar emergency release. The electric security lock includes a dead bolt, a frame adapted to slideably receive the dead bolt, a cover plate coupled to the frame for holding the dead bolt in place, a pair of cams coupled to the dead bolt and adapted to move the dead bolt in a lateral direction, a locking cylinder coupled to each of the cams, and an electric activating apparatus coupled to the dead bolt. The electric activating apparatus includes a circular latch member pivotally mounted and spring coupled to the dead bolt, a metal bar with a first end and a second end having a square hole disposed midway between the first and second holes, the first end of the metal bar is adapted to be coupled and uncoupled mechanically to the circular latch member, and a micro electronic switch mechanically coupled to the square hole of the bar and electrically coupled to an alarm device.

Abstract: A door lock wherein a generally U-shaped body straddles a door edge, the U-shaped body carrying a retractable bolt, actuating knobs or the like, interconnecting means between the bolt and actuating means, and suitable locking and releasing means.

Abstract: A mechanism for automatically shifting the tailgate latches of a vehicle-mounted dump bed as the same is being raised to insure that the tailgate is free to swing open and permit the load to begin discharging during raising of the dump bed and thus avoid a top-heavy, over-balanced condition. The mechanism also provides for the automatic latching of the tailgate during lowering of the dump bed and includes a trip arm mounted on the underside of the dump bed for rotation about a transverse, horizontal axis.

Abstract: A window and lock structure therefor for drawing the window sash tightly against the window frame, with the locking structure including a keeper on the window sash engageable by a locking shoe mounted on the frame and with the locking shoe having compound movement to engage the keeper and draw the sash tightly closed, with the movement of the locking shoe being derived from mechanism actuated by engagement with another part of the window sash as the window sash is closed.