Guide spring for a seating device and sprung seating device
US10765214B2 · kind B2 · utility
0Cited by
17References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 2018 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Oct 19, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C9/002
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A guide spring for a seating device has an inner portion, an outer portion, and a spiral coiled portion extending more than one convolution between the inner portion and the outer portion. The inner portion is firmly attached to a rod and the outer portion is firmly attached to a body. The guide spring thereby secures a radial position of the rod within the body, allowing the rod to move axially relative to the body when a load is placed onto the seating device. When in use, the guide spring deforms from a flat spiral shape to a conical spiral shape with axial movement of the rod relative to the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.