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Patent Searching and Data


Title:
バタフライ弁
Document Type and Number:
Japanese Patent JP2013510275
Kind Code:
A
Abstract:
A butterfly valve comprises: a body including a valve opening; and a flapper rotatably mounted about a rotation axis so as to be movable relative to the valve opening. The flapper is rotatable at least 180° about the rotation axis so that the flapper is movable to at least one fully opened position, at least one fully closed position 90° apart from the fully opened position, and a third position, either fully opened or fully closed, 180° from the other like position. In one embodiment the flapper is rotatable at least 360° about the rotation axis so that the flapper is movable to each of two opened positions 180° apart, and two closed positions 180° apart from each other and 90° and 270° apart from each of the fully opened positions. The valve can be easily calibrated and controlled, and cleaned to extend the useful service life between cleanings.

Inventors:
クルムポティック,ロバート
ルーカス,ポール・ディー
ヤロスロフ,ピセラ・ダブリュー
チェンバレン,デーヴィッド・ビー
Application Number:
JP2012537894A
Publication Date:
March 21, 2013
Filing Date:
October 15, 2010
Export Citation:
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Assignee:
MKS INSTRUMENTS,INCORPORATED
International Classes:
F16K1/22; F16K31/04
Domestic Patent References:
JPH01126476A1989-05-18
JPS61278667A1986-12-09
JP2003314377A2003-11-06
JP3017058U1995-10-17
JP2007046662A2007-02-22
JP2008038636A2008-02-21
Attorney, Agent or Firm:
小野 新次郎
小林 泰
富田 博行
星野 修
北来 亘