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:
Mar. 29, 2005
Filed:
Dec. 19, 2003
André Cuny, Habay-la-Neuve, BE;
Gérard Schmit, Attert, BE;
Eric Nowak, Saint-Nicolas, BE;
Georges Hubert Henri Gieres, Seltz, LU;
André Cuny, Habay-la-Neuve, BE;
Gérard Schmit, Attert, BE;
Eric Nowak, Saint-Nicolas, BE;
Georges Hubert Henri Gieres, Seltz, LU;
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A vent for a mold having a mold cavity comprises a valve member housed within a main body sleeve and reciprocally moveable therein in an axial direction between open and closed positions. The sleeve is mounted within a mold wall and contains an expansion agent such as silicon. An increase in mold temperature causes the expansion agent to expand and move the valve member from the closed position into the open position. An external annular groove is provided within the sleeve to receive displaced mold wall material as the sleeve is press inserted into the mold wall. A tight fit of the sleeve within the mold wall results. The sleeve and valve are configured to allow air to escape in the open position. The valve member is moved to the closed position by material within the mold cavity pressing against the valve member.