Worm reducer and electric power steering apparatus

Details Worm reducer and electric power steering apparatus Worm reducer and electric power steering apparatus

2007-03-08

2010-02-16

Fenstermacher, David M (Department: 3656)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S3880PS

Reexamination Certificate

active

07661332

ABSTRACT:
In a worm reducer for reducing the rotation transmitted to a worm and transmitting the reduced rotation to a worm wheel, the worm reducer being composed of the worm with screw faces formed on its outer periphery and the worm wheel with worm wheel teeth formed on its peripheral surface, the worm wheel teeth being in mesh with the screw faces of the worm, the worm wheel teeth are formed so that the lead angle of the worm wheel is smaller than that of the worm.

REFERENCES:
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patent: 2935887 (1960-05-01), Wildhaber
patent: 4665763 (1987-05-01), James
patent: 6053061 (2000-04-01), Furukawa et al.
patent: 6776064 (2004-08-01), Bucholz et al.
patent: 2005/0172744 (2005-08-01), Koyama et al.
patent: 2006/0005653 (2006-01-01), Fleytman
patent: 917529 (1954-09-01), None
patent: 1 775 048 (2007-04-01), None
patent: 2007-062977 (2007-06-01), None
German Office Action dated Sep. 29, 2009.

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