Spring devices – Vehicle – Comprising compressible fluid
Patent
1999-01-15
2000-10-24
Schwartz, Christopher P.
Spring devices
Vehicle
Comprising compressible fluid
188315, 18832216, F16F 902, F16F 500
Patent
active
061354341
ABSTRACT:
A gas spring shock absorber (10A) includes a damping fluid cylinder (14A) telescopically housed within an air cylinder (12A). A shaft (16A) connects a sealable, outer end (18A) of the air cylinder with a vented piston (32A) movably mounted within the damping fluid cylinder. A first fluid seal (60) extends from the gas cylinder and contacts the outer surface (38A) of the damping cylinder while a second fluid seal (34A) extends from the damping cylinder and contacts the inner surface (36A) of the gas cylinder. The fluid seals create a sealed variable-volume air chamber (40A) which is divided into air positive and air negative spring chambers (62,64). The air negative spring chamber is defined between the two fluid seals and automatically balances the force on the damping unit from the pressurized gas in the first air chamber portion. A bypass channel (66) is provided to permit fluid to bypass the second fluid seal and automatically equalize the pressure in the air positive and air negative spring chambers when the second fluid seal is aligned therewith.
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1999 Sid XC, SL and XL Owner's Manual, Rock Shox.RTM. pp. 1-21.
Fox Factory, Inc.
Schwartz Christopher P.
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