Gear having window holes, and method and apparatus for...

Details Gear having window holes, and method and apparatus for... Gear having window holes, and method and apparatus for...

2003-05-21

2008-10-21

Fenstermacher, David M (Department: 3682)

Machine element or mechanism

Gearing

Teeth

C074S460000, C074S462000

Reexamination Certificate

active

07437967

ABSTRACT:
A gear having window holes, and method and apparatus for mafufacturing the same in which by depressing partially one end surface of a primary formed article, a plurality of concaves for the window holes is formed at the one end surface in an axial direction of the primary formed articles, a plurality of projections are extruded from the other end surface thereof and tooth forms preformed at an outer peripheral wall of the primary formed article is thrown out in radial direction thereof, and the gear is formed by cutting the plurality of projections extruded from the other end surface thereof.

REFERENCES:
patent: 4938089 (1990-07-01), Ohoka
patent: 5337626 (1994-08-01), Everts et al.
patent: 5913939 (1999-06-01), Tanaka
patent: 5957000 (1999-09-01), Pecorari
patent: 6293165 (2001-09-01), Ohkawara et al.
patent: 2004/0231448 (2004-11-01), Okada
patent: 2005/0081668 (2005-04-01), Hagihara
patent: 2005/0160857 (2005-07-01), Takeuchi
patent: 2001-1102 (2001-01-01), None
patent: 2002-96136 (2002-04-01), None

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