Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Reexamination Certificate
2006-03-28
2006-03-28
Schwartz, Christopher P. (Department: 3683)
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
C188S322150
Reexamination Certificate
active
07017720
ABSTRACT:
An object of the present invention is to provide a front fork with a double-rod damper, which can improve an efficiency of an assembly operation thereof by simplifying alignment work of piston rods on assembly. To achieve this object, a front fork (30) comprising: an outer tube (1); an inner tube (2) inserted expansibly and contractibly into the outer tube; a double-rod damper (70) disposed inside the outer tube and the inner tube, the double-rod damper including a cylinder (3), a piston (5) received in the cylinder, a first piston rod (6) and a second piston rod (7) extending respectively from each side of the piston and penetrating through the cylinder, wherein an upper chamber (3a) and a lower chamber (3b) are defined between the cylinder and the piston, into which that oil is contained; and a fork-inside oil chamber (71) defined by the outer tube, the inner tube, and the double-rod damper, into which oil and air are contained, the double-rod damper further including: a piston rod connection mechanism (80) that connects at least one of the first piston rod and the second piston rod to the piston such that the one is displaceable in a direction perpendicular to an axis of the piston.
REFERENCES:
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patent: 6318526 (2001-11-01), Kruckemeyer et al.
patent: 2002/0157910 (2002-10-01), Kime
patent: 2004/0226790 (2004-11-01), Tsutomu
patent: 1-80842 (1989-05-01), None
Kayaba Industry Co. Ltd.
Rabin & Berdo PC
Schwartz Christopher P.
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