Abstract: An adjustable grip latch has a slippable, friction-type drive connection provided between a shaft and a pawl which is carried on the shaft. A stop extends alongside the shaft for limiting the travel of the pawl to a range of movement extending between latched and unlatched positions. When the pawl is in its latched position it engages one portion of the stop. When the pawl is in its unlatched position it engages a different portion of the stop. The slippable drive connection transmits only a limited amount of torque from the shaft to the pawl, thereby enabling the shaft to move the pawl between its latched and unlatched positions, and enabling the shaft to rotate relative to the pawl when the pawl has engaged the stop. The slippable drive connection utilizes a wave spring washer to effect transmission of limited torque from the shaft to the pawl.

Abstract: A door closure mechanism is provided with a plurality of adjustable keeper members. Each adjustable keeper includes a base secured to a member adjacent the free end of the door, side walls and a top wall. A latch engagement member is slidably secured to the top wall and includes an inclined latch engagement surface. The latch engagement member can be positioned to have an associated latching member of the door closure mechanism engage the latch engagement member at various positions along the latch engagement surface permitting the spacing between the door and the frame or an adjacent door to be adjustable in a direction substantially perpendicular to the door when in a fully closed position.

Abstract: A new and improved folding step especially useful on trucks or rail transit vehicles. The folding step includes a support bracket, a step member pivoted to the bracket, and a spring urging the two together and into one of two pivoted positions. The step member has parallel arms that straddle a box-like portion of the bracket. Stub shafts extend from the arms into the bracket through slots and carry cams that are urged into contact with the bracket by the spring. The cams and spring provide an over-center snap action between the step member and bracket.

Abstract: A door lock for sliding doors of trucks, vans and the like includes an exterior handle assembly and an interior handle assembly for actuating components carried in an interior housing assembly. The components include a pair of rotary latch bolts projecting through openings formed in opposite sides of the housing assembly. A pair of strikes are carried on spaced portions of a vehicle wall at locations on opposite sides of a vehicle access opening which is controlled by the door. The door is movable between a latched-closed position wherein one of the latch bolts latchingly engages one of the strikes to hold the door closed, and a latched-open position wherein the other of the latch bolts latchingly engages the other of the strikes to hold the door open. A thumb-operated lock control slide is carried by the housing assembly and provides one means for locking and unlocking the lock from inside the vehicle.

Abstract: An anti-static switch lock wherein a terminal assembly having the desired configuration of rotor and contacts is secured to one end of a hub. The other end of the hub has an inboard lipped boss forming, in cooperation with the hub end, a circumscribed radial groove. A keylock assembly includes a barrel, one end of which has a chamber to receive the boss of the hub, and a key operated, rotatable plug. The hub, having the terminal assembly attached to one end, is positioned such that the groove is disposed within the chamber of the barrel. A number of stakes are formed in the barrel, the stakes engaging the groove to firmly secure the hub to the barrel. The plug is inserted into the barrel, the end of the plug interlocking with the shaft of the terminal assembly rotor to effectuate switching of contacts.

Abstract: A tool-operated latch has a body which is mountable on the back side of a door panel adjacent an elongate opening and a hole formed through the door panel. An elongate latch lever is pivotally carried by the body and is movable between a latched position wherein the latch lever is nested with respect to the elongate door opening, and an unlatched position wherein the latch lever is extended with respect to the elongate door opening. A tool-operable actuator is journaled by the door panel hole and by the latch body, and is movable by a specially configured tool between locked and unlocked positions. A pawl is pivotally carried by the body for movement between a retaining position wherein it engages the latch lever to releasably retain the latch lever in its nested, latched position, and a releasing position wherein the pawl releases the latch lever thereby permitting the latch lever to be moved to its unlatched, extended position.

Abstract: An improved anti-static switch lock of the type having a key-operated plug rotatably located within a lock barrel, A nonconductive switch adapting hub connected to the lock barrel and a switch affixed to the hub, actuable upon rotation of the plug. The improvement consisting of a hub and plug design wherein the hub is connected to the lock barrel by resilient legs which engage an annular shoulder within the barrel and the plug extends from the barrel such that it prevents the legs from disengaging the shoulder. A biasing means interconnects the hub and one of the hub legs to bias the rotation of the plug and the switch to a desired position.

Abstract: An expansion anchor including an expansible shell and tapered nut for insertion into a drill hole in a rock formation and adapted for outward expansion of the shell into gripping engagement with the drill hole wall to support a rock bolt and bearing plate engaging the rock formation surface around the hole. The invention resides in a novel arrangement of dimensional and structural relationships of the expansion shell and tapered nut which allow the same anchor to be used in drill holes over a range of diameters approximately three times that of conventional prior art anchors of the same general type.

Abstract: A closure control mechanism especially designed for a pivoted door of a cargo carrier, such as, a highway or off-highway truck or trailer, cargo container, tanker and the like. The closure mechanism includes a hinged lock shaft adapted to be connected to one or the other of two members one of which is hinged and adapted to be selectively secured in closed position relative to the other, a keeper member(s) having a base part adapted to be secured to the other of the first two mentioned members and a part spaced from the base part having a surface facing in the direction of the base part for engagement with the lock shaft when the lock shaft is pivoted in the direction to move the hinged member of the first two mentioned members away from the other.

Abstract: A latch, as for a door, having a handle movable to latch and unlatch the door and a removable lock located within the handle. The lock is provided with a stop engaging finger on its end and a retractable bolt on its side. The lock receptacle in the handle has a plurality of bolt engaging surfaces therein which hold the lock in the handle in a locked position wherein the finger engages the stop to prevent movement of the handle, hold the lock in the handle in an unlocked position in which the finger does not engage the stop, and provide a means whereby the bolt may be completely retracted for lock removal.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which extends longitudinally along one side of the bolt and which has an end region that is shifted from side to side between connecting and disconnecting positions by a key-operated locking member. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding retracting movement of the bolt.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A spring-projected slide bolt is carried on the back of the body and is movable between projected and retracted positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a mounting member which extends longitudinally along one side of the bolt and which is drivingly engaged by the handle. A disconnect member is supported on the mounting member and is arranged to be pivoted from side to side between connecting and disconnecting positions by the movement of a key-operated locking member.

Abstract: A door lock has a flush-mountable body. A forwardly facing recess is defined by the body. A paddle-type handle is pivotally carried by the body and is movable between a nested position within the body recess and an operating position. A bolt is carried on the back of the body and is movable between latching and unlatching positions. A key-controlled disconnect linkage is provided for selectively connecting and disconnecting the handle and the bolt. The disconnect linkage includes a disconnect member which is moved by a key-operated locking member between connecting and disconnecting positions located, respectively, in and out of the path of travel of a handle operating arm. When the disconnect linkage drivingly connects the handle and the bolt, movement of the handle from its nested position to an operating position will cause corresponding unlatching movement of the bolt.

Abstract: A mine roof bolt and expansion anchor are provided with means preventing relative rotation of the two in a direction tending to withdraw the bolt from the tapered nut of the anchor while allowing relative rotation in the opposite direction, whereby the bolt may be rotationally advanced into the nut as the anchor remains rotationally stationary to effect expansion of the anchor shell within a drill hole. A conventional, two-compartment resin cartridge is inserted into the drill hole ahead of the end of the bolt carrying the anchor. The cartridge is ruptured and the contents thereof mixed by advance of the bolt and anchor while rotating in the direction preventing relative rotation. Immediately thereafter the bolt is rotated in the opposite direction, thereby expanding the anchor and firmly securing it in the hole. The bolt may then be immediately loaded without regard to the setting time of the resin. Three embodiments are disclosed of the means providing the aforementioned relative rotational action.