Patent ID: 6971493
Filing Date: 2005-12-06
Classification: B62K,F16F

Abstract:
1. A front fork, comprising: an outer tube; an inner tube inserted expansibly and contractibly into the outer tube; a double-rod damper disposed inside the outer tube and the inner tube, the double-rod damper including: a fork-inside oil chamber defined by the outer tube, the inner tube, and the double-rod damper, in which oil and air are contained, both the first rod and the second rod penetrating through the cylinder; a check valve disposed in a passage connecting the lower chamber of the double-rod damper with the fork-inside oil chamber, the check valve allowing only one-way flow of oil from the fork-inside oil chamber to the lower chamber of the double-rod damper; and an air vent passage of a small sectional area disposed in an upper portion of the double-rod damper, the air vent passage connecting the upper chamber of the double-rod damper with the fork-inside oil chamber.