Metal/elastomeric bumper for air springs
US5941510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1998 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Jun 30, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2206/424
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An air spring has a 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 two-piece bumper includes a rigid metal base which is formed as an inverted cup-shaped member with a cylindrical sidewall. The base is secured to one of the end members with the post extending into an open end of the base member. An elastomeric member is snap-fitted into a hole formed in an end closure wall of the base member and engages the opposite end member upon the air spring failing or experiencing a large deflection. In an alternate embodiment, a plurality of flexible fingers are formed from the cylindrical sidewall of the base and are snap-fit to the post to mount the base member on the post and on the one end member of the air spring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.