The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 27, 2011
Filed:
Jan. 23, 2009
Hironori Koyama, Kasugai, JP;
Koichi Hasegawa, Kasugai, JP;
Atsushi Muramatsu, Komaki, JP;
Tokai Rubber Industries, Ltd., Komaki-shi, JP;
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 θ, and the second rotation angle switch is turned on in a third angular range θ. 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 θincludes a fourth angular range θ, which has an angle different from at least a third angular range θ. The third angular range θincludes a second angular range θ, which has an angle different from at least the first angular range θ