Spring-loaded seat assembly
US4830345A · kind A · utility
33Cited by
9References
1Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Nov 19, 1987 |
| Grant date | May 16, 1989 |
| Priority date | — |
| Expiry date | Nov 19, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63B2208/0233
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A cushion comprising two seat pieces combined with inside faces facing towards each other, and a plurality of coil spring members which connect the two seat pieces. Each of the seat pieces is a shallow circular plate having a smooth central concavity and includes internally a series of concentrically extending walls, a series of radially extending walls, and a plurality of appropriately spaced tubular walls with an upstanding cylinder formed inside. Each of the coil spring members is closely coiled at its two terminals and encompasses corresponding cylinders of the two seat pieces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.