Fluid-filled type vibration damping device

Details Fluid-filled type vibration damping device Fluid-filled type vibration damping device

2009-01-23

2011-12-27

Ilan, Ruth (Department: 3616)

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

C267S140150, C267S219000

Reexamination Certificate

active

08083217

ABSTRACT:
A Fluid-filled type vibration damping device, which is configured to be free from the necessity of supplying a continuous application of electricity to a coil so as to maintain a movable valve body in either an opened state or a closed state, is provided. The device includes a cam mechanism, which transmits a rotational drive force of a motor to the movable valve body in the form of a reciprocating drive force. In the device, a first rotation angle switch is connected to a first control switch in series relative to a motor coil, and a second rotation angle switch is connected to a second control switch in parallel relative to the first switch. The first rotation angle switch is turned on in a state of a first angular range θ1, and the second rotation angle switch is turned on in a third angular range θ3. When the first control switch and the second control switch receive the same control signal, they are brought into respective inverted ON/OFF states. The first angular range θ1includes a fourth angular range θ4, which has an angle different from at least a third angular range θ3. The third angular range θ3includes a second angular range θ2, which has an angle different from at least the first angular range θ1.

REFERENCES:
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patent: 2009/0045560 (2009-02-01), Fueki et al.
patent: 2009/0102105 (2009-04-01), Hasegawa et al.
patent: 2011/0042872 (2011-02-01), Hasegawa et al.
patent: 2004-150546 (2004-05-01), None

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