Joint boot

Details Joint boot Joint boot

2007-09-04

2007-09-04

Binda, Greg (Department: 3679)

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

Housing

Flexible housing

C277S636000, C277S639000

Reexamination Certificate

active

10527816

ABSTRACT:
A joint boot, wherein sealing performance of a large-diameter attachment part to an outer casing is enhanced, includes a large-diameter attachment part2, a small-diameter attachment part4and a bellows part5. The large-diameter attachment part2is provided on its inner periphery with plural convex portions7and constructed to be capable of externally fitting in plural recessed portions8formed on the outer periphery of the outer casing1. The large-diameter attachment part2and the bellows part are formed in separate bodies, and a fit cylinder part6is extended at one extremity of the bellows part5. The convex portions7include each an inner wall portion12jutting radially inwardly in a curved form, an outer wall portion11in an arc form constituting part of the outer periphery surface of the large-diameter attachment part, a central strut wall13A connecting both in the circumferential middles of both, and a pair of lateral strut walls13B,13B connecting the inner and outer wall portions on both sides of the central strut wall, thereby forming four relief holes21A,22A,23A,24A circumferentially juxtaposed on the convex portions.

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