发明名称 |
CHAIR CONTROL FOR A PEDESTAL CHAIR HAVING A KNEE-TILT SEAT |
摘要 |
A CHAIR CONTROL FOR A PEDESTAL CHAIR HAVING A KNEE-TILT SEAT A chair control for a pedestal chair having a kneetilt seat. An elastomeric torsion spring is offset rearwardly from the tilting axis of the seat. The seat and torsion spring are operatively connected by a cam surface and a cam follower which effectively reduce the restoring force exerted by the torsion spring against the seat as the rearward tilt of the seat increases. A mechanism to adjust the initial restoring torque of the torsion spring provides a large angular twist of the torsion spring with a minimum linear movement of the mechanism. The chair control provides the chair seat with a less than conventional seat angle relative to the horizontal when the chair is unoccupied. A mechanism is provided to enable the occupant to adjust the chair seat to a more conventional seat angle in its unoccupied condition. |
申请公布号 |
CA2012639(A1) |
申请公布日期 |
1990.09.20 |
申请号 |
CA19902012639 |
申请日期 |
1990.03.20 |
申请人 |
SHAW-WALKER COMPANY (THE) |
发明人 |
HOFMAN, WILLIAM K. |
分类号 |
A47C1/02;A47C3/026;(IPC1-7):A47C7/00;A47C4/00 |
主分类号 |
A47C1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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