Swivel-chair frame
US4235408A · kind A · utility
16Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1978 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Feb 27, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47C7/4454
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A swinging-seat swivel chair includes a vertical stud that carries a horizontal hollow pin at the end of which are pivoted two supporting arms for a seat. A torsion bar is housed in the interior of the pin with one end coupled to the pin and the other end coupled to the arm at the other end of the torsion bar. A rigid longitudinal member is included substantially parallel to and spaced from the pin and rigidly interconnecting the arms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.