Long travel, high force combination spring
US7350774B2 · kind B2 · utility
12Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Sep 7, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F3/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A long travel, varying spring rate combination spring includes two differing rate springs connected end-to-end in such a way that the lower rate spring is compressed until positive engagement of a plunger with an intermediate flange member occurs with the higher rate spring thereafter compressed. Each spring may be assembled separately and connected together with a coupling to create a combination spring, allowing various springs to be combined to meet the requirements of a particular application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.