Compression spring with cone shaped frustums subject to compression set
US5326083A · kind A · utility
51Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1993 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Mar 17, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F2236/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A compression spring formed of an elastomer having a ratio of plastic strain to elastic strain that is greater than 1.5 to l and formed into a spherical body having cone frustums at each end to provide for a substantially constant spring rate over a major portion of its displacement. The spring is precompressed to overcome the compression set characteristics of the elastomer and to orient its molecular structure. The spring is particularly useful as a bumper spring for an automotive vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.