Chair control mechanism utilizing plane spiral spring

Details Chair control mechanism utilizing plane spiral spring Chair control mechanism utilizing plane spiral spring

A - Human Necessities

47

C

155/22.3

A47C 3/02 (2006.01) A47C 3/026 (2006.01) A47C 7/34 (2006.01)

Patent

CA 1065752

LOW PROFILE CHAIR IRON ABSTRACT OF THE DISCLOSURE A low profile chair iron for controlling biased tilting between a seat or backrest and a support uses a substantially flat coil spring of increasingly smaller diameter coils between pivotably connected support bracket and a chair part bracket. Tension adjusting means for the spring are pivotably mounted with respect to the central coils of the spring and/or support bracket for minimizing nonuniform loading of the spring during the pivotable movement of the chair part bracket with respect to the support bracket.

268067

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