Damping force variable valve and shock absorber using same

Details Damping force variable valve and shock absorber using same Damping force variable valve and shock absorber using same

2007-09-25

2007-09-25

Kramer, Devon (Department: 3683)

Brakes

Internal-resistance motion retarder

Cylinder structure

C188S266600, C188S313000, C188S282300, C188S282500

Reexamination Certificate

active

11044024

ABSTRACT:
A damping force variable valve includes a main valve provided between a high pressure section and a low pressure section, for allowing a flow of oil from the high pressure section into the low pressure section when the main valve is opened, the main valve being capable of being opened or closed depending on a pressure of the high pressure section, an initial preload and a pressure of a control chamber; a first variable orifice provided between the high pressure section and the control chamber, for controlling the pressure of the control chamber; a fixed orifice provided between the control chamber and the low pressure section; and a second variable orifice provided between the high pressure section and the low pressure section.

REFERENCES:
patent: 5960915 (1999-10-01), Nezu et al.
patent: 6079526 (2000-06-01), Nezu et al.
patent: 6155391 (2000-12-01), Kashiwagi et al.
patent: 6182805 (2001-02-01), Kashiwagi et al.
patent: 6474629 (2002-11-01), Beck et al.
patent: 6527093 (2003-03-01), Oliver et al.

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