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. 21, 2006
Filed:
Aug. 22, 2002
Applicants:
Akihiko Miwa, Anjo, JP;
Kaoru Tsubouchi, Toyota, JP;
Nobuyuki Hirota, Aichi-ken, JP;
Tomoyasu Sakai, Kariya, JP;
Inventors:
Akihiko Miwa, Anjo, JP;
Kaoru Tsubouchi, Toyota, JP;
Nobuyuki Hirota, Aichi-ken, JP;
Tomoyasu Sakai, Kariya, JP;
Assignee:
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T 8/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vacuum booster which moderates a retraction speed of a valve seat member to restrain a contact noise between a key member retracting in a unitary manner with the valve seat member and a flange surface of a plunger. The vacuum booster includes a noise restriction device.