Boot for universal joint

Details Boot for universal joint Boot for universal joint

2011-06-07

2011-06-07

Binda, Greg (Department: 3679)

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Housing

Flexible housing

Reexamination Certificate

active

07955179

ABSTRACT:
To make a bellows section of a boot to be flexibly and repeatedly deformable without deterioration in durability, to thereby reduce rotational resistance when a joint angle is large, the boot has the bellows portion where three or more circumferentially extending crest portions and root portions therebetween are alternately formed. A large-diameter attaching portion is formed at one end of the bellows portion. A small-diameter attaching portion is formed at the other end. A rising wall closest to the large-diameter attaching portion and a rising wall closest to the small-diameter attaching portion have smaller wall thickness than other portions of the bellows section. A ratio (t1/t2) of the thickness (t1) of the rising walls to the thickness (t2) of the other portions of the bellows portion is set to 0.6≦t1/t2<1.0.

REFERENCES:
patent: 4735596 (1988-04-01), Ukai et al.
patent: 4923432 (1990-05-01), Porter
patent: S59-17289 (1984-04-01), None
patent: S62-176524 (1987-11-01), None
patent: H7-16072 (1995-03-01), None
patent: 2000-266072 (2000-09-01), None
patent: 2003-049944 (2003-02-01), None
International Search Report dated Dec. 26, 2006.

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