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Low profile seat suspension

  • US 5,871,198 A
  • Filed: 10/14/1997
  • Issued: 02/16/1999
  • Est. Priority Date: 08/02/1996
  • Status: Expired due to Fees
First Claim
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1. An adjustable vehicle seat comprising:

  • a bottom frame adapted to be mounted on the vehicle;

    a top frame located above said bottom frame and adapted to support a seat thereon;

    a scissors linkage interconnecting said bottom frame and said top frame and constraining said top frame to vertical movement relative to said bottom frame, said linkage including a spring support;

    a spindle mounted on and extending upwardly from said bottom frame;

    an adjustment plate slidably disposed on said bottom frame, said adjustment plate having a continuous wall forming an opening through which said spindle projects in spaced relationship to said wall;

    a cam fixed to said adjustment plate and encircling said spindle in spaced relationship therewith;

    a cam follower movably mounted upon said cam and encircling said spindle, said cam follower having a lip extending outwardly therefrom; and

    a spring having one end seated against said spring support and another end seated against said lip, said spring having a preload force applied thereto urging said top frame away from said bottom frame;

    wherein sliding said adjustment plate and said cam towards said spindle causes said cam follower to move upwardly to further compress and add to said preload force on said spring.

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