Coil spring with ends adapted for coupling without welding
US5791638A · kind A · utility
51Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1997 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Aug 6, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F3/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Spring apparatus is provided which includes coil springs having intermediate and end coils suitable for interconnection in order to form a continuous spring which maintains a constant load-deflection characteristic over all intermediate coils unaffected by the joint end coils. This configuration therefore finds particular utility in providing bias without compromise of sealing, electromagnetic shielding and/or conductivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.