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VEHICLE SEATS

  • US 3,669,400 A
  • Filed: 07/24/1970
  • Issued: 06/13/1972
  • Est. Priority Date: 07/24/1970
  • Status: Expired due to Term
First Claim
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1. A vehicle seat comprising a base part, a seat part mounted on a spring suspension for upward and downward movement relative to said base part, said spring suspension comprising a gas spring, a pump source of compressed gas forming part of the seat and fixed to said base part, said pump being permanently connected to the said gas spring and operable to introduce gas into said spring in order to raise the level of said seat part to a ride position, and a valve connected to said gas spring operable to release gas from said spring in order to lower the level of the seat part to the ride position, said pump source comprising a cylinder mounted for pivotal movement about an axis perpendicular to the axis of the cylinder, a piston positioned in said cylinder, a piston rod having an outer end extending from said piston, a linkage arm having opposite ends pivoted at one end to the outer end of the piston rod at a pivot connection and at its opposite end about a support on the base part, and means for moving said linkage arm about said support thereby to move the piston relative to the cylinder.

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