An apparatus includes a coupling rod having a longitudinal axis and disposed within one or more bearing elements that laterally constrain the coupling rod while enabling axial rotation, multiple latching barbs coupled to the coupling rod, rotational force elements that apply a rotational force to the latching barbs in a latching direction and resist rotation of the latching barbs in an unlatching direction. The apparatus may be deployed in a rack system having a rack drawer. The apparatus may also include barb engagement elements for engaging and latching the latching barbs when the rack drawer is moved from an open position to a closed position. Rotation of the coupling rod in the unlatching direction unlatches the latching barbs when the rack drawer is in the closed position and enables a user to open the rack drawer. A method that uses the apparatus is also disclosed herein.

An apparatus includes a coupling rod having a longitudinal axis and disposed within one or more bearing elements that laterally constrain the coupling rod while enabling axial rotation, multiple latching barbs coupled to the coupling rod, rotational force elements that apply a rotational force to the latching barbs in a latching direction and resist rotation of the latching barbs in an unlatching direction. The apparatus may be deployed in a rack system having a rack drawer. The apparatus may also include barb engagement elements for engaging and latching the latching barbs when the rack drawer is moved from an open position to a closed position. Rotation of the coupling rod in the unlatching direction unlatches the latching barbs when the rack drawer is in the closed position and enables a user to open the rack drawer. A method that uses the apparatus is also disclosed herein.

A handle set including a chassis and a handle mounted on the chassis. The handle includes a shank having a load bearing section, a primary actuating section, and a secondary actuating section. The chassis includes a housing, a support spindle, a primary actuator, and a secondary actuator. The support spindle is longitudinally coupled with the load bearing section, and the primary actuator is rotationally coupled with the primary actuating section of the handle. The handle set has a first configuration in which the secondary actuating section is engaged with the secondary actuator, and a second configuration in which the secondary actuating section is disengaged from the secondary actuator.

A reversible electric door lock includes a clutch unit, a dead bolt unit and a handle unit. The clutch unit has an external driving member, two driving plates mounted at two sides of the external driving member, an internal driving member rotatably mounted in the external driving member, and a clutch pin movably disposed in the external driving member between an engaging position to allow synchronous rotation of the external and internal driving members, and a disengaged position to allow idle rotation of the internal driving member. The external driving member is rotated to actuate the dead bolt unit to switch to an unlatched position. The handle unit includes an internal operating handle coupled with one of the driving plates, and an external operating handle coupled with the internal driving member. The reversible electric door lock can be applied to left-hand and right-hand doors.

A handle assembly includes a lock cylinder of a selected one of a first standard or a different second standard. A tail piece extends from the lock cylinder. The handle assembly also includes a vertical tubular member, a horizontal tubular member and a transition plate. The transition plate is disposed within the vertical tubular member and is moveable between a first position and a different second position. The transition plate accommodates installation of the lock cylinder of the first standard when in the first position and installation of the lock cylinder of the second standard when in the second position. A mechanical linkage is coupled to the tail piece and effects movement of a locking bolt in response to turning of a key in the lock cylinder.

An apparatus including a chassis assembly having a housing, a spindle rotatably mounted to the housing, a spring collar rotatably mourned to the housing, a first biasing element rotationally urging the spindle toward a spindle home position, and a second biasing element rotationally urging the spring collar toward a spring collar home position. The apparatus may further include a handle mounted on the chassis such that the chassis biases the handle to a handle home position with a return torque. The handle is engaged with the spindle such that the first biasing element contributes to the return torque. In certain embodiments, the handle may further be engaged with the spring collar such that the second biasing element contributes to the return torque.

An exemplary catch assembly is configured for installation into a spindle, and generally includes a holder, a first catch, a second catch, and a bias mechanism. The holder is configured for mounting within the spindle. The first catch is mounted for movement relative to the holder between a first projected position and a first depressed position. The second catch is mounted for movement relative to the holder between a second projected position and a second depressed position. The bias mechanism biases the first catch toward the first projected position and biasing the second catch toward the second projected position.

A handle assembly includes a lock cylinder of a selected one of a first standard or a different second standard. A tail piece extends from the lock cylinder. The handle assembly also includes a vertical tubular member, a horizontal tubular member and a transition plate. The transition plate is disposed within the vertical tubular member and is moveable between a first position and a different second position. The transition plate accommodates installation of the lock cylinder of the first standard when in the first position and installation of the lock cylinder of the second standard when in the second position. A mechanical linkage is coupled to the tail piece and effects movement of a locking bolt in response to turning of a key in the lock cylinder.

An exemplary knob assembly includes a knob having a circumferential channel, and a deformable ring seated in the circumferential channel. The ring is normally rotatable relative to the knob such that rotation of the ring does not cause a corresponding rotation of the knob. When gripped with a sufficient gripping force, the ring frictionally engages and rotationally couples with the knob, thereby permitting transmission of torque between the ring and the knob. In certain embodiments, the knob assembly may include a detent mechanism operable to selectively couple the ring and the knob. In certain embodiments, the ring may include protrusions operable to engage pockets in the knob to provide for rotational coupling.

Disclosed herein is a mechanism (30) for a lockset (10). The mechanism (30) comprises a latchbolt retractor (22) that is rotationally actuatable. The mechanism (30) comprises a rotationally mounted handle coupler (36). The rotationally mounted handle coupler (36) is rotatable by a rotation of a handle (12) when coupled thereto and comprises an adaptor receiver (46) for receiving any one of a plurality of adaptors (48,52,54). The rotationally mounted handle coupler is configured to engage with at least one of the plurality of adaptors (48,52), but not all of the plurality of adaptors (54), for transmission of the rotation of the handle (12) to a latchbolt retractor actuator (22).