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:
Jun. 07, 2022
Filed:
Mar. 21, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Daisuke Kanematsu, Aichi, JP;
Yasuaki Shima, Aichi, JP;
Shuto Nonoshita, Aichi, JP;
Naoyuki Funada, Aichi, JP;
Abstract
Provided is a shutter comprising a main body and a shaft bearing. The main body has a substantially circular plate shape, and, in a closed state to close a passage, a front face of the main body is located upstream of a back face thereof in the passage. The shaft bearing is rotatably engaged with a shaft configured to divide the passage into a main passage and a sub-passage in an open state to open the passage, the sub-passage having a cross-sectional area smaller than that of the main passage. The main body includes: a main-passage-side end located in the main passage in the closed state; and a bent portion bent at the main-passage-side end in a direction from the back face side to the front face side. A parallel cross-section of the main body, the cross-section being taken along a parting plane parallel to the shaft, has a circular arc shape bowed toward the back face side from the front face side.