Hybrid spring
US10808786B2 · kind B2 · utility
0Cited by
84References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2012 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Oct 10, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C27/065
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A complex spring unit (10) comprises at least a first spring portion (12) and a second spring portion (14), which first and second spring portions are integrally formed, wherein the first spring portion is arranged in use to be placed under compression, and the second spring portion is arranged in use to be placed under tension, during compression of the complex spring unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.