Dual concentric canted-coil spring apparatus
US4907788A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Jan 30, 1989 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Jan 30, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3212
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Annular coil spring apparatus is provided which includes a first annular spring with a plurality of coils canted along a centerline with a trailing portion of each coil and a leading portion of each coil defined by a back angle and front angle, respectively. Coils are interconnected in order to form a garter-type coil spring and a second annular spring is provided and disposed within the first annular spring. The second annular spring may include a plurality of coils canted along a centerline thereof and the first and second annular spring may be canted in either the same direction or opposite directions in order to provide different force-deflection characteristics of the annular coil spring apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.