Ball screw apparatus

Details Ball screw apparatus Ball screw apparatus

2005-09-06

2005-09-06

Joyce, William C. (Department: 3682)

Machine element or mechanism

Gearing

Directly cooperating gears

C074S424860

Reexamination Certificate

active

06938510

ABSTRACT:
A ball screw apparatus, has a screw shaft including a screw groove; a nut fitted with the screw shaft, the nut including a screw groove and a ball return passage; a circulation piece including a ball circulation passage; and, a large number of balls, wherein, in the inner peripheral surface of the nut, a concave-shaped snap ring groove extending along the peripheral direction of the nut is formed, in the face of the circulation piece that faces the inside diameter side of the nut, a concave-shaped snap ring groove is formed so as to connect to the snap ring groove of the nut, and an outside diameter portion of a snap ring is fitted into the two snap ring grooves to thereby fix the circulation piece to the nut.

REFERENCES:
patent: 2924113 (1960-02-01), Orner
patent: 3170336 (1965-02-01), Bohnhoff
patent: 4677869 (1987-07-01), Mayfield
patent: 4795172 (1989-01-01), Brande
patent: 5988007 (1999-11-01), Nishimura
patent: 199 52 714 (2001-02-01), None
patent: 0 985 851 (2000-03-01), None

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