| 摘要 |
PROBLEM TO BE SOLVED: To provide an adjustable valve including a field responsive fluid within a passageway, and fluid flow adjustment through the passageway in a vibration damper. SOLUTION: A reduction of MR fluid allowing use of lighter-weight, less-expensive hydraulic fluids for flow through a damping valve 36 of a piston 25 is allowed. In another aspect, a damper 20 includes a mechanical adjustment means for manually adjusting the damping level. Adjustment is accomplished by a moveable permanent magnet, moveable pole piece, moveable pole-and-magnet assembly, or magnetic shunt. Manual adjustment may include a knob, lever, or cable actuation. Alternately, magnetic flux is provided by an electromagnet. The valve and damper are useful in any suspension system where a damper body 22 is attached to a frame component 12, such as a bicycle frame, and a piston rod 23 is attached to a suspension component, such as a bicycle's swing arm 14. COPYRIGHT: (C)2011,JPO&INPIT
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