Resin rack boot

Details Resin rack boot Resin rack boot

1990-06-11

1991-09-24

Stodola, Daniel P.

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

Housing

Flexible housing

74 182, 277212FB, F16D 384

Patent

active

050511050

ABSTRACT:
A rack boot which is installed at the steering rack portion of an automobile comprises a small-diameter ring portion, a large-diameter ring portion, and a bellows portion interposed between the small-diameter portion and the large-diameter portion. An angle to an axial line of the boot of a slanted wall of a first crest in the bellows portion is arranged to be 70.degree. to 85.degree., whereby the slanted wall is turned in when the boot contracts to an extreme extent. As a result, the shrinkage ratio of the boot in the axial direction can be increased without any necessity to enlarge the outer diameter of the crest portion of the boot or to increase the number of crests. Consequently, the size of the rack boot can be reduced.

REFERENCES:
patent: 3490343 (1970-01-01), Afanador et al.
patent: 4058018 (1977-11-01), Lauper
patent: 4083202 (1978-04-01), Westercamp
patent: 4639159 (1987-01-01), Amrath
patent: 4721175 (1988-01-01), Butler
patent: 4722415 (1988-02-01), Takahashi

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