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US 7,066,554 B2Granted
Control device having a collapsible operating handle
AssigneeNone recorded
InventorYu-Hong Lin
Life of this patent
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AssigneeNone recorded
InventorYu-Hong Lin
Estimating the term…
A control device for use in a chair includes a casing fastened to the chair at the bottom side, a control rod pivoted to the casing, and an operating handle pivoted to the control rod and turnable between an operative position for rotation by the user to bias the control rod to further control rotation/lifting of the chair and a collapsed non-operative position to reduce space occupation of the chair for delivery.
A control device installed in a chair at a bottom side, comprising at least one control rod respectively rotatable by an external force to control a respective functional mechanism of said chair, at least one operating handle respectively pivoted to said at least one control rod for rotation by the user's hand to bias the respective operating rod, and at least one pivot means, respectively, connecting said at least one operating handle to said at least one control rod such that each said operating handle is turnable about the respective pivot means relative to the respective operating rod between a received non-operative position and an extended operative position where each said operating handle is rotatable by the user to bias the respective operating rod.
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Chairs adapted for special purposes: reclining or easy chairs
Having independently-adjustable supporting parts: the parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination
Chairs
Term ended 2 Aug 2024 (estimated)
1. Field of the Invention
The present invention relates to a control device for a chair and, more particularly, to a control device having a collapsible operating handle.
2. Description of the Related Art
FIG. 1 is a schematic drawing showing a control device installed in a chair according to a first embodiment of the present invention.
FIG. 2 is an elevational assembly view of the control device according to the first embodiment of the present invention.
FIG. 3 is an exploded view of the control device according to the first embodiment of the present invention.
Referring to FIGS. 1 and 2, a control device 20 in accordance with a first embodiment of the present invention is shown installed in a chair 10 for swivel or lifting control.
The chair 10 comprises a seat 11, a back 12 for supporting the back of the user sitting on the seat 11, a stand (not shown) and a seat post 111 for supporting the seat 11, and a connecting bar 121, which has a first end fixedly fastened to the bottom side of the back 12 and a second end suspended below the seat 11.
The control device 20 comprises a casing 21 which receives the second end of the connecting bar 121 for enabling the connecting bar 121 to be moved forwards/backwards relative to the casing 21 to adjust the pitch between the back 12 and the seat 11. The control device 20 further includes a vertical barrel 22 which is formed integral with the casing 21 and sleeved onto the seat post 111. The control device also includes a lock 23 adapted to lock the casing 21 to the connecting bar 121, a control rod 31 pivotally mounted in the casing 21, and an operating handle 32 coupled to the control rod 31 for operation by hand to bias the control rod 31 and to further control rotation of the seat 11 with the back 12 on the seat post 111 or lifting of the seat 11 relative to the seat post 111. Because the rotation/lifting control is of the known art and not within the scope of the claims of the present invention, no further detailed description in this regard is necessary.