A latch (202) includes a catch jaw (210) which is operative to releasably engage a post. A release pawl (212) is operative to hold the catch jaw in a latched jaw position, and upon movement of the release pawl, enables the catch jaw to move to an unlatched jaw position. In an unlocked condition of the latch, movement of a handle (206) is operative to enable the latch to change from the latched to unlatched condition. The latch includes a keylock (240) and an electrical actuator (308). Each of the keylock and the electrical actuator are operative to independently change the condition of the latch between locked and unlocked conditions.

An exemplary handle assembly including a handle and a coupling mechanism. The handle includes a shank and a manually graspable portion extending from the shank. The coupling mechanism includes a coupling member and a cam sleeve. The coupling member is mounted to the shank for movement between a coupling position and a decoupling position. The cam sleeve is movably mounted to the shank and covers the coupling member. A radially-inner portion of the cam sleeve includes a cam surface operable to engage the coupling member. The cam surface is configured to drive the coupling member from the decoupling position to the coupling position as the cam sleeve is displaced from a home position to a displaced position.

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.

An anti-barricading turn hub assembly is configured for use with a lockset including a bolt movable to lock and unlock a door. The anti-barricading turn hub assembly includes a spindle connected to a thumb turn on one side of the lock. The spindle is releasably engaged to a turn hub that is operable by the key from the other side of the door. Under normal operation, the spindle and turn hub rotate together to lock and unlock the bolt. In a barricading situation in which the thumb turn is held to prevent the turn hub assembly from rotating, the turn hub disengages from the spindle upon application of sufficient force through rotation of the key, and the disengaged turn hub can be rotated to unlock the bolt even if the thumb turn is held to keep the spindle from rotating.

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 lever connection body includes a first lever; and a second lever rotating about a rotation center which is different from a rotation center of the first lever. A sliding long hole opened in the first lever and the second lever spaced apart with respect to the sliding long hole, are connected to each other via a rod. A rod holder including an inserting projection portion inserted into the sliding long hole of the first lever is mounted on an end portion of the rod which is a side of the first lever. A rectangular stopper is provided in a distal end portion of the inserting projection portion of the rod holder, the stopper has a short side length to be inserted into the sliding long hole and a long side portion locked to the sliding long hole to regulate withdrawn from the sliding long hole.

A mechanical clutch for mechanically connecting and disconnecting a rotational drive member and a rotational driven member of a locking mechanism. The mechanical clutch includes a drive and a driven member for rotation around an axis of rotation, a clutch pin which engages with the drive and or driven member to mechanically and rotationally link the drive and driven member to one another, and a clutch pin engagement surface provided on the or each clutch pin. A corresponding clutch pin engagement surface is also provided on the drive or driven members such that, when the engaged drive and driven members are rotated against a magnitude of rotational resistance (which is below a threshold magnitude of rotational resistance) the respective clutch pin engagement surfaces of the clutch pins and drive or driven members will co-act with one another to retain said rotational connection between the drive and driven member. When the drive and driven members are rotated against a magnitude of rotational resistance (which is above the threshold magnitude of rotational resistance) the respective clutch pin engagement surfaces of the clutch pins and drive or driven members will co-act with one another to urge the clutch pins out of rotational driving engagement between the drive and driven member.

Coupling arrangement for a lock device, the coupling arrangement comprising an input and an output element rotatable about a rotation axis; an engaging member movable between a first and second position; an electric motor arranged to affect movement of the engaging member between the first and second positions; a coupling member rotationally locked to the input element and axially movable relative to the input element between a decoupled position, where a rotation of the input element is not transmitted by the coupling member to a rotation of the output element, and a coupled position where a rotation of the input element is transmitted by the coupling member to a rotation of the output element; and a transmission mechanism arranged to transmit a rotation of the coupling member to a movement of the coupling member from the decoupled position to the coupled position when the engaging member adopts the second position.

A lock assembly that has a first lock state and a second lock state. The lock assembly includes a latch assembly that has a latch movable between an extended position and a retracted position, and a handle operatively coupled to the latch to move the latch between the extended position and the retracted position. The lock assembly also includes a hub that is coupled to the handle for movement therewith, a member that is operatively coupled to the handle to permit or prevent movement of the latch, and a lock element. The member is engaged with the hub to permit or prevent movement of the hub. The lock element is engaged with the member in the second lock state such that the member prevents movement of the handle, and the lock element is disengaged from the member in the first lock state such that the member permits movement of the handle.

An anti-barricading turn hub assembly is configured for use with a lockset including a bolt movable to lock and unlock a door. The anti-barricading turn hub assembly includes a spindle connected to a thumb turn on one side of the lock. The spindle is releasably engaged to a turn hub that is operable by the key from the other side of the door. Under normal operation, the spindle and turn hub rotate together to lock and unlock the bolt. In a barricading situation in which the thumb turn is held to prevent the turn hub assembly from rotating, the turn hub disengages from the spindle upon application of sufficient force through rotation of the key, and the disengaged turn hub can be rotated to unlock the bolt even if the thumb turn is held to keep the spindle from rotating.