Spring devices – Resilient shock or vibration absorber – Including energy absorbing means or feature
Patent
1998-06-28
2000-03-14
Butler, Douglas C.
Spring devices
Resilient shock or vibration absorber
Including energy absorbing means or feature
26714013, 267219, F16F 1300
Patent
active
060361832
ABSTRACT:
A hydraulic mount is operable in soft and firm modes and includes a valve positioned at the partition between the working chamber and the reservoir. A normally open fluid path extends through the partition and opens between the working chamber and the reservoir for soft operational characteristics useful in attenuating low amplitude vibrations. The valve body and the partition together define a control chamber in the fluid path. The control chamber is open to the reservoir through lateral openings in the valve body so that fluid pressure in the control chamber is approximately at atmospheric pressure so that a small actuator can move the valve. When the valve is closed the fluid path is closed for firm operational characteristics in controlling large amplitude inputs such as those from torque transients.
REFERENCES:
patent: 4383679 (1983-05-01), Kakimoto
patent: 4391435 (1983-07-01), Pham
patent: 4783062 (1988-11-01), Hamberg et al.
patent: 4877225 (1989-10-01), Noguchi et al.
patent: 4901986 (1990-02-01), Smith
patent: 5246213 (1993-09-01), Zup et al.
patent: 5370375 (1994-12-01), Kojima
patent: 5645138 (1997-07-01), Tajima et al.
Johnston Gary Lee
Kruckemeyer William Charles
Lee Chiung Alex
Long Mark Wayne
Miller Frederick Clem
Butler Douglas C.
General Motors Corporation
Sigler Robert M.
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