Title:
金型ベント
Document Type and Number:
Japanese Patent JP4669276
Kind Code:
B2
Abstract:
A vent (10) for a mold having a mold cavity comprises a valve member (14) housed within a main body (12) 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 (42) such as silicon. An increase in mold temperature causes the expansion agent (42) to expand and move the valve member (14) from the closed position into the open position. An external annular groove (26) 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 (14) is moved to the closed position by material within the mold cavity pressing against the valve member.
Inventors:
Andre Cuni
Girard Schmid
Erik Novak
Georges Hubert Henri Gel
Girard Schmid
Erik Novak
Georges Hubert Henri Gel
Application Number:
JP2004364006A
Publication Date:
April 13, 2011
Filing Date:
December 16, 2004
Export Citation:
Assignee:
THE GOODYEAR TIRE & RUBBER COMPANY
International Classes:
B29C33/10; B29C33/02; B29D30/06; B29D30/08; B29L30/00
Domestic Patent References:
| JP11333846A | ||||
| JP2002172623A | ||||
| JP2003306197A | ||||
| JP5064818A | ||||
| JP63312819A | ||||
| JP2003170479A | ||||
| JP60232914A | ||||
| JP7214601A | ||||
| JP10296735A |
Foreign References:
| US4759701 |
Attorney, Agent or Firm:
Akio Miyazaki
Ishibashi Masayuki
Shinichi Iwata
Masaaki Ogata
Ishibashi Masayuki
Shinichi Iwata
Masaaki Ogata