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. 26, 2006
Filed:
May. 20, 2002
Hiroshi Morinaga, Kodaira, JP;
Hidetoshi Yokota, Kodaira, JP;
Hiroshi Morinaga, Kodaira, JP;
Hidetoshi Yokota, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A purpose of the present invention is to provide a rim wheel and a tire rim assembly which are capable of effectively reducing cavity resonance of a tire, and accordingly, enhancing quietness and riding comfort. A plurality of cap membersis arranged on an outer circumferential surface of a rimin a circumferential direction thereof, diaphragms are disposed inwardly of each cap member, and a plurality of sub-air chambersis formed between the rimand the cap membersin a rim circumferential direction. The tire main air chamberis connected to the sub-air chambersthrough communicating holesformed on the cap members. The sub-air chambersand the communicating holesconstitute a Helmholtz resonance noise absorber that can absorb vibration with specified frequencies. Further, since the sub-air chamberis not formed in a continuous annular shape in a tire circumferential direction, occurrence of cavity resonance can be suppressed and a substantial reduction in noise can be secured.