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    • 10. 发明授权
    • Locking pawl and ratchet wheel
    • 锁爪和棘轮
    • US3895539A
    • 1975-07-22
    • US43432074
    • 1974-01-17
    • SIGMATEX AG
    • WEMAN PER OLAFSCHMELOW HARALD MARTIN
    • F16D41/12
    • F16D41/12Y10T74/2133Y10T74/2137
    • The improved locking pawl of this invention is adapted for use with a ratchet wheel having ratchet teeth. The locking pawl has a locking surface, a sensing tip and a pivoting point. In the preferred embodiment, the locking pawl has a substantially arcuate shape, pivots in the same direction in which the ratchet wheel turns and the sensing tip is disposed on the periphery of the locking surface. In an alternate embodiment, the locking pawl has a sensing surface, pivots for engagement in a direction opposite to the direction in which the ratchet wheel turns and the sensing tip and the sensing surface are spaced apart from the locking surface. Both embodiments of the locking pawl, as well as the ratchet wheel associated therewith, are provided with case hardened zones and non-case hardened zones.
    • 本发明的改进的锁定爪适用于具有棘轮齿的棘轮。 锁定爪具有锁定表面,感测尖端和枢转点。 在优选实施例中,锁定爪具有基本上弓形的形状,在与棘轮转向相同的方向上枢转,并且感测尖端设置在锁定表面的周边上。 在替代实施例中,锁定棘爪具有感测表面,枢转以在与棘轮旋转的方向相反的方向上接合,并且感测尖端和感测表面与锁定表面间隔开。 锁定爪的两个实施例以及与其相关联的棘轮都设置有壳体硬化区域和非外壳硬化区域。