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Title:
DOOR CHECK DEVICE
Document Type and Number:
Japanese Patent JP2010137734
Kind Code:
A
Abstract:

To provide a door check device in which an operation sound becomes small.

A one way valve is provided on a conduit on an upstream side further than a valve element 72, and includes a hole part 4a becoming in the closed state by closing it with the valve element 72; a first flow passage FR and a second flow passage SR for guiding a liquid from the hole part 4a to a downstream of the valve. When flow resistance is set larger than flow resistance of the hole part 4a and the valve element 72 closes the hole part 4a, the first flow passage FR is in the closed state, and when the valve element is left from the hole part 4a, it becomes in the full open state. When the valve element 72 closes the hole part 4a, the second flow passage SR is in the closed state, and after the valve element 72 is left from the hole part 4a and the first flow passage FR becomes in the full open state, it starts to be opened.


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Inventors:
YAMAMOTO KENJI
MIWA MASAFUMI
OKIMURA AKIHIKO
IGARASHI YOSHITERU
Application Number:
JP2008316412A
Publication Date:
June 24, 2010
Filing Date:
December 12, 2008
Export Citation:
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Assignee:
SHIROKI CORP
OILES INDUSTRY CO LTD
International Classes:
B60J5/04; E05F5/00; F16K15/18; F16K47/02
Domestic Patent References:
JP2008008310A2008-01-17
JP2009197890A2009-09-03
JP2006027691A2006-02-02
JPS5965673A1984-04-13
Attorney, Agent or Firm:
Fujiharu Ijima
Nobushige Samejima



 
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