发明名称 |
Spring-tilt mechanism for a chair or seat |
摘要 |
The spring-tilt mechanism comprises a support frame (4), a seat portion (1) tiltable on the support frame (4) about a substantially horizontal axis (2) between a first and a second position, e.g. defined by stops (13, 13'). One end (15') of a torsion spring (15) is fixed against rotation in the support frame (4). A gear box (16) is operatively engaged with the other end (15'') of the torsion spring (15) and has an extendible member (24) engageable with a tracking surface (31) of the seat portion (1). An operating member (29) on the gear box (17) is easily accessible to a user sitting on the seat portion (1) to pre-load the torsion spring (15) for cushioning the user on the seat portion (1) between the said first and second positions (stops 13, 13'). |
申请公布号 |
US4666121(A) |
申请公布日期 |
1987.05.19 |
申请号 |
US19860862045 |
申请日期 |
1986.05.12 |
申请人 |
SYBA LIMITED |
发明人 |
CHOONG, JOHN;HOLLINGTON, GEOFFREY |
分类号 |
A47C3/026;(IPC1-7):F16M13/00 |
主分类号 |
A47C3/026 |
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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