|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/5121 ; 137/5157 ; 137/527|
|발명자 / 주소|
|인용정보||피인용 횟수 : 7 인용 특허 : 5|
A check valve having a hollow cylindrical body with a ledge extending around its inner periphery between its ends. A bar extends across the hollow body and is attached at its ends to the ledge. A sealing surface is formed on the ledge and on the bar, both in the same plane. Spaced flat bottom lugs rest on the seating surface and have bores that receive the ends of an axle. Plate-like valve members are hinged to the axle and a spring on the axle urges the valve members to a closed position to seal on the seating surface.
A check valve comprising a hollow body, said hollow body having an inner periphery defining a flow passage therethrough, said body having an inlet end, an outlet end and an intermediate part, a ledge integrally attached to the inner periphery of said intermediate part, said ledge having a first valve seat formed on it, a laterally extending bar having ends extending across said flow passage and said ends of said bar being integrally attached to said ledge at its said ends, a second valve seat formed on said bar, said second valve seat being disposed subs...