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Seats

  • US 4,572,468 A
  • Filed: 06/22/1983
  • Issued: 02/25/1986
  • Est. Priority Date: 06/23/1982
  • Status: Expired due to Fees
First Claim
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1. A seat includinga seat or back rest support,a seat or back rest part,a bottom frame connected to said part, anda device for adjusting the position of said part relative to said support in a stepwise manner, said device includinga rotary knob,a disc carrying a plurality of transversely extending pins and coupled to said knob for rotation therewith about an axis,a gear wheel having teeth defined by flanks, which teeth are co-operable with said pins and are defined within an outer peripheral envelope, said flanks of the teeth which adjoin said outer envelope being constructed such that reaction forces due to contact between said flanks and said pins are directed so as to pass through said disc axis,a pinion connected to said gear wheel,a toothed segment in engagement with said pinion,a rear transverse shaft rotatably mounted in said bottom frame and connected to said toothed segment,an angled two-arm lever,a longitudinal rod having two ends, one end of which is articulated on said toothed segment while the other end is articulated on one arm of said angled lever,a front transverse shaft rotatably mounted in said suport and connected to the other arm of said angled lever, andrespective link connected to said rear transverse shaft, each of which is articulated on said support.

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