Back position control device for chairs

Details Back position control device for chairs Back position control device for chairs

A - Human Necessities

47

C

155/50

A47C 7/40 (2006.01) A47C 1/027 (2006.01)

Patent

CA 1061698

BACK POSITION CONTROL DEVICE FOR CHAIRS ABSTRACT OF THE DISCLOSURE A pivotally mounted back support for a chair is disclosed incorporating a pivotal mounting utilizing a plurality of interleaved clutch plates. Alternate ones of the clutch plates are stationary and the remainder are connected to the lower end of the back support post to pivot with the post about a common pivot shaft. Locking of the fore and aft pivotal position of the back is effected by squeezing together the clutch plates to provide a surface-to-surface frictional bond. Springs urge the post into erected position. A handle, readily accessible to a person seated on the chair is provided to effect locking and release of the clutch and thus pivotal adjustment of the position of the back. -1-

261908

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