Shock absorber

  • US 6,581,918 B2
  • Filed: 06/28/2002
  • Issued: 06/24/2003
  • Est. Priority Date: 05/01/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A shock absorbing device comprising:

  • a hollow spring including a chamber, said hollow spring having a proximal end, a distal end, and a bellows comprised of a springy material connecting said proximal end to said distal end and enclosing said chamber;

    a distal mount mounted on said distal end of said hollow spring;

    a proximal mount mounted on said proximal end of said hollow spring;

    a shock absorber extending through said proximal mount, said hollow spring, and said distal mount, said shock absorber including;

    a cylinder extending through and being attached to said proximal mount; and

    a piston assembly having a piston, a piston rod and a piston assembly distal end, said piston slidably engaging said cylinder, said piston rod extending through and slidably engaging said distal mount, said piston assembly distal end including a contacting means for urging said distal mount and said hollow spring distal end proximally when said contacting means is forced against said distal mount and for urging said piston assembly distally when said distal mount is forced against said contacting means, wherein said distal mount has mounted therein at least one distal O-ring for sealingly engaging said piston rod.

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