Snap-on bumper for air spring

Details Snap-on bumper for air spring Snap-on bumper for air spring

Filed on

1991-02-26

Date issued

1993-04-13

Examiner

Peters, Jr., Joseph F.

Patent Class

Spring devices

SubClass

Resilient shock or vibration absorber

SubSubClass

Including energy absorbing means or feature

Other Related Categories

267139, 267136, 267267, 267 64, 267 27, 403 50, 188299, 18832211, F16M 100, F16M 300, F16M 900, F16M 1100

Type

Patent

Status

active

Patent number

052015009

Description

ABSTRACT:
An air spring has pair of spaced end members for mounting the spring at spaced locations on a structure. A flexible sleeve of elastomeric material is sealingly engaged with the end members and forms a pressurized fluid chamber therebetween. A post is mounted on one of the end members and extends into the fluid chamber. A shock absorbing bumper formed of a high strength plastic is snap-fitted on an enlarged top of the post. A plurality of circumferentially arranged flexible fingers define an opening in a base of the bumper, and are snap-fitted over the enlarged top of the post which extends into the opening and seat into an annular undercut formed in the post beneath the enlarged top. The snap-fitted plastic bumper replaces the heretofore used elastomeric bumper.

REFERENCES:
patent: 3658314 (1972-04-01), Luzsicza
patent: 4218599 (1980-08-01), Garn
patent: 4342264 (1982-08-01), Hindin et al.
patent: 4478396 (1984-10-01), Kawaura
patent: 4506910 (1985-03-01), Bierens
patent: 4639159 (1987-01-01), Amrath
patent: 4787606 (1988-11-01), Geno et al.
patent: 4852861 (1989-08-01), Harris
patent: 4925224 (1990-05-01), Smiszek
patent: 4946144 (1990-08-01), Geno et al.

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