B - Operations – Transporting – 62 – K
Patent
B - Operations, Transporting
62
K
B62K 19/18 (2006.01) B62J 1/02 (2006.01) B62K 21/20 (2006.01) B62K 25/30 (2006.01)
Patent
CA 2053290
2053290 9012727 PCTABS00002 The invention comprises a suspension system for a bicycle or similar vehicle to allow shock isolation at the location of the seat or handle bar mounting or other locations. The suspension system includes a hydraulically actuated system as well as a variable rate progressive dampening assembly. The hydraulic fluid is also utilized to lubricate the moving portions of the system to promote proper function and extend the useful life thereof. The system also has a variable spring preload to accomodate different sized riders. The system is cost effective and yet extremely durable and may be retrofit for use with existing bicycles. The suspension system includes an outer housing member (50) secured to the frame, a piston member (46, 82, 124) slidable within the outer housing member (50) and the piston member (46, 82, 124). The guide sleeve (54, 84, 126) provides guide member (62, 92, 122) to coact with a guide groove (60) or guide insert (90) or recess in the piston. Hydraulic fluid is disposed within the spring chamber (69) and dampening valve (70, 100) is provided for varying the dampening rate. An inert gas charge (75) may be provided for spring (68) adjustment.
Knapp Thomas D.
Macrae & Co.
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