Controlling device for a body support pivotally mounted on top of a stool
OwnerSimon Liaoinventor
Life of this patent
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Abstract
A controlling device for a support pivotally mounted on top of a stool includes a housing adapted to securely engage with a bottom face of the support, two pawls pivotally received in the housing, a wedge and control knob connected to the wedge and a ratchet gear received in the housing. After either one of the pawls is activated, the activated pawl is able to selectively engage with the ratchet gear so that the support is able to pivot in a predetermined direction.
Claims7
A controlling device for a support pivotally mounted on top of a stool having a base and a tube extending upward from the base and a seat rotatably mounted on top of the base, the controlling device comprising:
- two pawls pivotally received in a housing;
- the housing adapted to securely engage with a bottom face of the support and composed of a top cover, a body and a bottom cover;
- the bottom cover having two protruding posts respectively mounted on opposite sides of the bottom cover to correspond to the two pawls, and two positioning rods each being formed close to a corresponding one of the two protruding posts;
- activating means for activating movement of either one of the pawls;
- and
- a ratchet gear received in the housing,
- whereby after either one of the pawls is activated, the activated pawl is able to selectively engage with the ratchet gear so that the support is able to pivot in a predetermined direction.
Dependencies are inferred from the claim text.