|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/5121 ; 137/5272|
|우선권정보||GB-0011255 (1984-05-02); GB-0003035 (1985-02-06)|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 12 인용 특허 : 5|
A wafer check valve having an annular housing, closing flaps effective to close a passage through the housing and spring urged to a passage closing position, the flaps being mounted on one or more hinge pins, the or each hinge pin extending at each end into a bore in an insert, the inserts being received in respective slots in the body and including means retaining the inserts in the slots without movement.
A wafer check valve comprising an annular housing having two end faces, a passage through said housing, said passage comprising, at one section of the housing, two generally semicircular opening, sealing surfaces formed on the housing within said passage around said openings, two closing flaps effective to close respective ones of said openings, spring means to urge said flaps to a passage closing position in contact with said sealing surfaces, diametrically opposed axially extending slots formed in asaaid housing and opening into said passage towards on...