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. 13, 2023
Filed:
Jan. 10, 2020
Nippon Pillar Packing Co., Ltd., Osaka, JP;
Atsushi Nakano, Osaka, JP;
Kazukiyo Teshima, Osaka, JP;
NIPPON PILLAR PACKING CO., LTD., Osaka, JP;
Abstract
A diaphragmincludes a fixed portionto be fixed to a body portion, and a flexible thin film portionintegrally connected to the fixed portion. The fixed portionhas a tubular press-fitting portionto be press-fitted into a tubular sealing grooveformed on the body portion, and a diaphragm-side tapered surfaceformed on an axis C side with respect to the press-fitting portion. In a state where the press-fitting portionis press-fitted into the sealing groove, an inclination angle θof the diaphragm-side tapered surfacerelative to the axis C is smaller than an inclination angle θof a body-side tapered surfaceformed on the body portionrelative to the axis C, and an end portionof the diaphragm-side tapered surfaceis brought into contact with the body-side tapered surface