| US 7,490,901 B2 | ||
| Back rest for a chair | ||
| Peter Maier, Herrischried (Germany); and Harry Fischer, Wutöschingen (Germany) | ||
| Assigned to Sedus Stoll Aktiengesellschaft, Waldshut (Germany) | ||
| Filed on Oct. 18, 2007, as Appl. No. 11/975,172. | ||
| Claims priority of application No. 10 2006 049 677 (DE), filed on Oct. 18, 2006. | ||
| Prior Publication US 2008/0093905 A1, Apr. 24, 2008 | ||
| Int. Cl. A47C 3/00 (2006.01) | ||
| U.S. Cl. 297—291 | 13 Claims |
| 1. A back rest for a chair, said back rest comprising:
a back support;
a back surface secured to said back support;
a two-axis joint allowing said back surface to swivel, said two-axis joint comprising:
a joint plate connected to the back surface;
two elements made of an elastic material for supporting the two-axis joint in a ground position; and
a receiving chamber connected to the back support, said receiving chamber accommodating the two elements made of an elastic
material;
wherein said joint plate is arranged in the receiving chamber between said two elements made from an elastic material, said
joint plate holding the two-axis joint in the ground position and swiveling about the two-axis joint; and
wherein said two elements made from an elastic material are supported against the receiving chamber.
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