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:
Mar. 27, 2001
Filed:
May. 26, 2000
Masaaki Hamada, Kounan, JP;
Akio Saiki, Inuyama, JP;
Abstract
A pneumatically operated active vibration damping device is disclosed, which comprises: a first and a second mounting member elastically connected with each other by an elastic body interposed therebetween; a working air chamber adapted to apply an oscillating force between the first and second mounting member, based on a periodic change of an air pressure in the working air chamber; an air piping system connected to the working air chamber and cooperate with the working air chamber to define a negative pressure applied region; a switch valve connected to the air piping system and operable for connecting the air chamber alternately to a vacuum source and an atmosphere for thereby causing the periodic change of the air pressure in the working air chamber; and at least one pressure-regulating valve connected to the negative pressure applied region and optionally operable for introducing the atmosphere into the negative pressure applied region, when the level of the negative pressure in the negative pressure applied region is higher than a predetermined negative pressure level, for thereby adjusting a level of the negative pressure applied to the working air chamber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile