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:
May. 17, 1988
Filed:
Jan. 31, 1986
Yoshihiro Taki, Nagoya, JP;
Toshiaki Fukuta, Anjo, JP;
Hajime Akado, Anjo, JP;
Susumu Miyakawa, Kariya, JP;
Yoshitaka Nishio, Nagoya, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
A filter device includes an annular filter element having a plurality of wave portions extending outwardly, a central cup-shaped portion arranged at an inner periphery of the filter element, a support frame arranged at an outer periphery of the filter element, and a connecting portion at which both sides of the filter element are abutting on and connected with each other. The central portion, the support frame and the connecting portion are made of synthetic resin and formed as a unitary structure, wherein the outermost and innermost peripheral ends of the filter element are respectively embedded in and held by the support frame and the central portion.