Starter motor having seal member for sealing axial end of...

Details Starter motor having seal member for sealing axial end of... Starter motor having seal member for sealing axial end of...

2005-01-25

2005-01-25

Bucci, David A. (Department: 3682)

Machine element or mechanism

Engine starters

C074S00700R, C074S00700R, C277S490000

Reexamination Certificate

active

06845681

ABSTRACT:
A front end of a starter motor housing is sealed by a resilient seal member disposed between a bearing and a front end wall of the housing. A shaft carrying a pinion at its front end is rotatably and slidably supported by the bearing in an over hang fashion. The seal member is a cup-shaped ring having a circular outer wall, a bottom wall and a center hole. A sealing lip slidably contacting the rotating shaft is formed around the center hole. The circular outer wall of the seal member is tightly and hermetically held between an outer ring of the bearing and front end wall of the housing, so that the seal member is not displaced in the axial direction. The bottom wall is S-shaped forming a depressed portion facing the bearing to provide more space for retaining lubricant therein.

REFERENCES:
patent: 3752543 (1973-08-01), Schmidt
patent: 4895035 (1990-01-01), Okamoto et al.
patent: 4995275 (1991-02-01), Okamoto et al.
patent: 5054329 (1991-10-01), Morishita et al.
patent: 5137285 (1992-08-01), Pick
patent: 5220844 (1993-06-01), Mills
patent: 5317933 (1994-06-01), Rometsch
patent: 6062734 (2000-05-01), Bundgart
patent: 6280095 (2001-08-01), Furukoshi et al.
patent: U 2-96471 (1990-08-01), None
patent: A 2-218866 (1990-08-01), None

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