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.

The present disclosure relates to the technical field of locks, and discloses an outer lock body for quick assembly of a handle, including a mounting seat and a handle, where the handle includes a rotating part and a hand-held part, the rotating part is inserted into and fitted with the mounting seat, a quick assembly mechanism is provided in the mounting seat, the quick assembly mechanism includes a limiting body, a limiting ring groove recessed on the rotating part, a holding part, and a push-in member, and with the push-in action of the push-in member, a holding part is pushed open and the limiting body is pushed to partially enter the limiting ring groove. According to the outer lock body, the handle can be quickly disassembled and the direction of the hand-held part can be changed.

The present disclosure relates to the technical field of locks, and discloses an outer lock body for quick assembly of a handle, including a mounting seat and a handle, where the handle includes a rotating part and a hand-held part, the rotating part is inserted into and fitted with the mounting seat, a quick assembly mechanism is provided in the mounting seat, the quick assembly mechanism includes a limiting body, a limiting ring groove recessed on the rotating part, a holding part, and a push-in member, and with the push-in action of the push-in member, a holding part is pushed open and the limiting body is pushed to partially enter the limiting ring groove. According to the outer lock body, the handle can be quickly disassembled and the direction of the hand-held part can be changed.

A universal adaptor for door handle, operable to be universally assembled in a polygonal assembling groove of one of multiple types of handles, so that the above-mentioned handle forms a panel-like lock handle and is locked to a panel lock, and includes a lock portion and a universal extension portion. The lock portion is formed with at least one lock hole corresponding to the panel lock. The universal extension portion is connected to the lock portion and extends along an extension direction to form a polygonal rod structure, and a catching-type fit relationship is formed between the polygonal rod structure and the polygonal assembling groove. The present disclosure can achieve the functions and effects of universally assembling in polygonal assembling grooves of handles with different appearances and thereby enabling the handles to be locked to panel locks.

An adapter for either a handle set or a lever set door lever is equipped with a pair of springs to provide a pre-load on the spindle. The pre-load prevents sagging of the lever due to the large mass of the lever. A sleeve in the adapter is formed out of a compressible material that accepts the spindle in a press-fit configuration. This allows for greater manufacturing tolerances while still providing a solid and secure engagement between the spindle and the adapter. As a result, any free play in the lever is eliminated and the lever is maintained in a horizontal, home position when the lever is not in use. Following use through rotation of the lever, the springs promptly return the lever back to the home position while the sleeve prevents any slop or free-play in the lever's motion.

An adapter for either a handle set or a lever set door lever is equipped with a pair of springs to provide a pre-load on the spindle. The pre-load prevents sagging of the lever due to the large mass of the lever. A sleeve in the adapter is formed out of a compressible material that accepts the spindle in a press-fit configuration. This allows for greater manufacturing tolerances while still providing a solid and secure engagement between the spindle and the adapter. As a result, any free play in the lever is eliminated and the lever is maintained in a horizontal, home position when the lever is not in use. Following use through rotation of the lever, the springs promptly return the lever back to the home position while the sleeve prevents any slop or free-play in the lever's motion.

An adjustable door pull to be installed on a first surface of a door that opens an entrance through which a user can walk, the adjustable door pull including a grip to allow the user to pull the door open such that the user is able to walk through the entrance, at least one detachable standoff, including an attachment portion having an aperture into which the grip is inserted, and a protruding portion disposed at a first end on at least a portion of the attachment portion to extend from the attachment portion and the grip to contact the first surface of the door on a second end opposite with respect to the first end, the protruding portion including an aperture to allow the attachment portion to be coupled to the grip, and a set screw to be inserted fully into the aperture of the protruding portion until the set screw also inserts at least partially into the aperture of the attachment portion to couple the attachment portion to the grip, and a through bolt to be inserted through a hole from a second surface of the door, the through bolt comprising a threaded portion to screw into the aperture of the protruding portion to fix the protruding portion to the first surface of the door, such that the through bolt is disposed a distance from the set screw within the aperture of the protruding portion.

An adjustable door pull to be installed on a first surface of a door that opens an entrance through which a user can walk, the adjustable door pull including a grip to allow the user to pull the door open such that the user is able to walk through the entrance, at least one detachable standoff, including an attachment portion having an aperture into which the grip is inserted, and a protruding portion disposed at a first end on at least a portion of the attachment portion to extend from the attachment portion and the grip to contact the first surface of the door on a second end opposite with respect to the first end, the protruding portion including an aperture to allow the attachment portion to be coupled to the grip, and a set screw to be inserted fully into the aperture of the protruding portion until the set screw also inserts at least partially into the aperture of the attachment portion to couple the attachment portion to the grip, and a through bolt to be inserted through a hole from a second surface of the door, the through bolt comprising a threaded portion to screw into the aperture of the protruding portion to fix the protruding portion to the first surface of the door, such that the through bolt is disposed a distance from the set screw within the aperture of the protruding portion.

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.

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.