Wheel drive unit

Rotary shafts – gudgeons – housings – and flexible couplings for ro – Housing – With rolling body supporting shaft in housing

Reexamination Certificate

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Details

C464S906000

Reexamination Certificate

active

07104893

ABSTRACT:
A wheel-driving unit and a method for manufacturing the same. The circumferential-direction widths of teeth respectively constituting a male spline portion (47a) and a female spline portion (48a) are varied gradually in the respective axial directions of the male and female spline portions (47a), (48a). The directions where the widths of the teeth respectively constituting the male and female spline portions (47a), (48a) increase in the axial direction are set so as to differ from each other, whereby the spline teeth are engaged with each other in a wedge-like manner. A retaining ring (33b) is bridgingly interposed between the outer peripheral surface of the outer end portion of the spline shaft (17) and the inner peripheral surface of the near-to-outer-end portion of the spline hole (14) to thereby prevent the spline shaft (17) from slipping out of the spline hole (14).

REFERENCES:
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patent: 4175404 (1979-11-01), Schopf
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patent: 6634951 (2003-10-01), Sahashi et al.
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patent: 6851865 (2005-02-01), Nomura et al.
patent: 63-235029 (1988-09-01), None
patent: 4-46233 (1992-04-01), None
patent: 6-234302 (1994-08-01), None
patent: 7-83242 (1995-03-01), None
patent: 2551702 (1997-06-01), None
patent: 10-264605 (1998-10-01), None
patent: 2000-135903 (2000-05-01), None
patent: WO 99/27267 (1999-06-01), None

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