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:
Aug. 31, 2021
Filed:
Jan. 21, 2021
Mikuni Corporation, Tokyo, JP;
Toshiaki Ishii, Odawara, JP;
Makoto Koyama, Odawara, JP;
Daisuke Takayama, Odawara, JP;
Naoki Tanaka, Odawara, JP;
MIKUNI CORPORATION, Tokyo, JP;
Abstract
An exhaust valve device for a vehicle includes: a valve elementaxially supported by a rotating shaftin a boreof a valve bodyproduced through casting; sealing projectionsandintegrally formed on an inner circumferential surface of the boreto follow one side portionand the other side portionof an outer circumferential edge of the valve elementat a fully closed position; sealing surfacesandof the sealing projectionsand, the right side portionand the left side portionof the valve elementat the fully closed position abutting respectively on the sealing surfaces; R-shaped cornersandformed between the inner circumferential surface of the boreand the sealing surfacesand; and diameter enlarged portionsformed in the inner circumferential surface of the boreto enlarge the borethat are adjacent respectively to the sealing surfacesandof the sealing projectionsandand correspond to lengths of the sealing surfacesand, and the valve elementhas an outer shape enlarged to correspond to a height of the cornersandon an outer circumferential side with formation of the diameter enlarged portionsat the fully closed position.