|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/202; 137/550; 222/189.09|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 15|
A normally open check valve, incorporating a bell-shaped check valve member, and filter assembly incorporating same, wherein the specific gravity of the bell shaped member volume as defined by the throat, and exterior wall of the bell shaped member is less than one, and the bell shaped member is disposed adjacent a valve seat in a chamber with the throat opening thereof generally facing a liquid source, among other things. The low specific gravity for the bell shaped member volume may be attained by way of example, by the bell shaped member interior capt...
1. A normally open check valve for passing gas in a first direction, from an upstream side of the valve to a downstream side of the valve, and for passing gas in a reverse direction to the first direction, and for preventing liquid flow in the first direction, comprising:a) a body member having a chamber with at least one side wall, an upstream and a downstream opening, the side wall including a tubular side wall portion having a diameter narrowing to at least a contact diameter as the chamber side wall extends upstream; b) a bell shaped member with a po...