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US 2007/0163312 A1Published application
Reinforced handle assembly for lock
AssigneeI-Tek Metal Mfg. Co., Ltd.
InventorMu-Lin Shen
Life of this patent
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Abstract
A lock includes a handle, a hub, a spindle rotatably mounted in the hub and coupled to the handle to turn therewith, and a transmission member fixed to the handle to turn therewith. The transmission member is stopped by the hub after the handle has been turned through an angle, transmitting a torque from the handle to the hub via the transmission member. Thus, impact from the handle can be partly transmitted to the hub and then to a door on which the lock is mounted, instead of completely transmitted to the spindle. Damage to the spindle is thus avoided.
Claims9
A lock comprising:
- a handle;
- a hub;
- a spindle rotatably mounted in the hub and coupled to the handle to turn therewith;
- a stop ring fixed in the hub and mounted around the spindle, the stop ring including a restraining groove delimited by two end walls;
- and
- a transmission member fixed to the handle to turn therewith, with the transmission member being mounted around the spindle and not rotatably fixed thereto, with the transmission member including a stop movably engaged in the restraining groove, the stop being stopped by one of the end walls delimiting the restraining groove after the handle has been turned freely through an angle by a rotational force when the lock is in a locked state;
- wherein when a torque is applied to the handle that has been turned freely through the angle, the torque is imparted to the hub via the transmission member preventing the spindle from being damaged by the torque.
4 more elements
(canceled)
(canceled)
Dependencies are inferred from the claim text.