| 摘要 |
A reciprocating rotor and ratchet assembly wherein the rotor is indexed a certain angle of rotation with each reciprocation of the ratchet member. The assembly includes a housing, the rotor and the ratchet member. The rotor and ratchet member are rotatably located within the housing. The ratchet member includes at least one locking lug and is rotatable between first and second positions relative to housing. The locking lug engages the rotor when the locking lug is rotated in a first direction from the first position to the second position, and causes the rotor to rotate with the locking lug. The locking lug engages the housing when the ratchet member is in the second position and, in this position, the housing maintains the ratchet member in engagement with the rotor in a manner to stop rotation of the rotor. The locking lug disengages the housing and the rotor when the ratchet is rotated in a second direction from the second position in the first direction, such that the rotor remains stationary during this movement.
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