| 摘要 |
A door opening apparatus inside of a door knob or handle, includes cooperating gears transferring slidable movements from an outer member attached to the door knob, into rotational movements of an inner rotary member attached to the lock-set spindle, that cause the spindle to rotate whereby the door can be opened. A door opening apparatus attached to the inside of a door knob or handle that will cause a door to open when the door knob or handle is pushed or pulled depending on the direction the door opens
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