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:
Jul. 13, 2021
Filed:
Aug. 01, 2019
Applicant:
Toyo Tire Corporation, Itami, JP;
Inventor:
Toshikazu Yasunaga, Itami, JP;
Assignee:
TOYO TIRE CORPORATION, Itami, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29D 30/06 (2006.01); B29C 33/10 (2006.01);
U.S. Cl.
CPC ...
B29D 30/0606 (2013.01); B29C 33/10 (2013.01); B29D 2030/0617 (2013.01);
Abstract
A vent plug is mounted in a vent hole open in a molding face of a tire cure mold. The vent plug has a cylindrical housing having a vent path in itself, a stem that is inserted into the housing and serves as a valve element for opening and closing the vent path, and a coil-shaped spring that biases the stem toward a cavity so as to open the vent path. The stem includes a columnar trunk portion and a head portion that comes in contact with a valve seat at an opening portion of the housing to thereby close the vent path. The stem turns as the stem moves along an axial direction.