|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||251/083; 251/095; 251/099; 251/288; 251/301|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 3 인용 특허 : 47|
A flow control device in which a flapper is continuously biased to the closed position by a leaf spring that may have a plurality of fingers. The same valve includes a shutoff mechanism allowing the user to adjust forward flow through the valve or shut it off entirely. The leaf spring is made to include polyoxymethylene.
1. A valve comprising: a housing defining an internal chamber with an inlet port and an outlet port;a flapper within the chamber, the flapper being configured to pivot to a first closed position to seal the inlet port against flow between the outlet port and the inlet port, and to pivot to a second open position to permit fluid flow between the inlet port and the outlet port;a limiting element within the chamber, the limiting element being adjustably positionable in relation to the flapper to limit the amount by which the flapper pivots including to prev...