Chairs and seats – Movable back – Tiltable
Reexamination Certificate
2006-09-14
2009-06-09
White, Rodney B (Department: 3636)
Chairs and seats
Movable back
Tiltable
Reexamination Certificate
active
07543889
ABSTRACT:
A gear-driven adjusting assembly for continuous adjustment of seat angle is disclosed. A external gear plate of the gear transmission mechanism is mounted in a internal gear plate with a eccentricity therebetween. An external cam of a gap removing mechanism is mounted between a central boss of the internal gear plate and the inner hole of the external gear plate. An internal cam is mounted between the inner hole of the external cam and the central boss of the internal gear plate, and a spring is mounted between the two cams, which form an eccentric cam mechanism. A central shaft of a driving mechanism is provided in the hole of the central boss of the internal gear plate, a driving block of the driving mechanism is provided between the internal cam and external cam. When the spring is in a free state, the internal cam and the external cam are wedged tightly to remove the seat gap; the driving block of the driving mechanism can overcome the elastic force by a moment to release the wedge effect of the gap removing mechanism, such that the gear transmission mechanism is driven for transmission and rotation, so as to achieve the purpose of adjusting seat angle. The assembly according to the present invention has the features of compact configuration, small gap, high strength as well as high universalness, and can conveniently implement the function of manual adjustment, electrical adjustment and continuous adjustment of the seat back angle.
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Cui Qing
Huang Xing
Huang Zhengkun
Hubei Aviation Precision Machinery Technology Co., Ltd.
Merchant & Gould P.C.
White Rodney B
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