F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
74/208
F16H 25/00 (2006.01) F16H 63/30 (2006.01)
Patent
CA 1211640
ABSTRACT OF THE DISCLOSURE Disclosed is a shift mechanism (66, 68, 70, 72) for shifting a means (22, 22A', 22B, 27C) for performing an operation at a preselected one of at least two spaced-apart operating positions. The mechanism comprises a threaded screw (10, 10A, 10B, 10C) that is rotated about its central longitudinal rotational axis ("C") by a motor (14, 14A, 14B, 14C) to move a drive nut (12, 12A, 12B, 12C) in opposite axial directions therealong relative the particular direction the shaft is rotating and causes the drive nut to compress a resilient biasing means (20, 20', 20A, 20A', 20B, 20B', 20C, 20C') which is adapted to urge the operating means to the particular position in a preloaded condition such that the operation is able to be performed by overcoming any resistance incurred in performing the operation or upon removal of the resistance upon the occurance of an event enabling the operation to occur.
432375
Corporation Eaton
Macrae & Co.
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