Title:
真空アタッチメントと共に使用する漏れのない一方向弁
Document Type and Number:
Japanese Patent JP2007530884
Kind Code:
A
Abstract:
A one-way valve allows air to be drawn from a collapsible, flexible, airtight bag using a vacuum source. When the vacuum source is removed, the one-way valve prevents air from re-entering the bag. The valve assembly comprises a base, a valve element supported by the base, and a cap fitted onto an end of the base that is disposed in the exterior of the bag. The base comprises a flange that is disposed in the interior of the bag and is joined to a peripheral area surrounding a hole in one wall of the bag. One surface of the flange has a series of concentric heat-concentrating circular beads for speeding up the conduction heat sealing operation by which the valve assembly is attached to the bag. The valve cap is provided with a circular wall that presses the diaphragm of the valve element against a circular bead on an annular seat formed on the base for supporting the valve element.
More Like This:
| WO/2002/061287 | NON-RETURN VALVE |
| JPH0680962 | [Name of invention] Durable check valve |
Inventors:
Kovetsky, Robert G.
Application Number:
JP2007504515A
Publication Date:
November 01, 2007
Filing Date:
February 03, 2005
Export Citation:
Assignee:
Illinois Tours Works Inc.
International Classes:
F16K15/14; B65D30/24; B65D33/25; B65D77/22; B65D81/20
Domestic Patent References:
| JP2000296865A | 2000-10-24 | |||
| JP2002337914A | 2002-11-27 | |||
| JPS63171967U | 1988-11-09 | |||
| JPH0445237U | 1992-04-16 | |||
| JPS5031983A | 1975-03-28 |
Foreign References:
| US20020117215A1 | 2002-08-29 |
Attorney, Agent or Firm:
Atsushi Aoki
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami
Jun Tsuruta
Tetsuro Shimada
Shinozaki Masami