| 摘要 |
A door latch actuating mechanism comprises: a housing attachable to door structure, a handle carried by the housing for rotation in either of two directions, and an output shaft rotatable in response to handle rotation, and mechanism in the housing to yieldably resist handle rotation in either direction, the mechanism including (i) a rotor coupled to the handle to rotate therewith, (ii) a first spring coupled to the rotor to resist rotor rotation in one direction, and (iii) a second spring coupled to the rotor to resist rotor rotation in the opposite direction.
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