|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/5121 ; 137/514 ; 137/904|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 13 인용 특허 : 4|
A stiffly compliant upstop extends parallel to the hinge axis of a bi-petal check valve and provides essentially a continuous line of contact with the downstream side of each valve member. This line of contact is symmetrically located to span virtually the entire distance between the spaced hinge-suspension points unique to each valve member. And continuity of the respective lines of upstop contact is maintained throughout a terminal range of angular displacement, as the upstop compliantly deforms in approach to the full-open condition of the respective ...
A check valve comprising a cylindrically annular body which includes a diametrically extending seat post dividing the opening of said body into two like opposed generally semicircular valve-seat openings to share fluid flow in a single downstream direction through said body, and two valve members having hinge suspension from said body to open and close said valve-seat openings, said valve members being hinged on a common axis parallel to and at downstream offset from said seat post, diametrically opposed mount structures for said hinge suspension and for...