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|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||251/3353 ; 251/254 ; 138/46|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 15 인용 특허 : 1|
A flow control device comprising a spindle having a disk at its lower end and a handle at its upper end and spring-biased to bring the disk into pressing contact with a disk seat within a case, a closure having a top wall, and at least one rollable member resting on the upper surface of the closure top wall and mounted on the spindle at an upper end portion thereof projecting upward from the upper surface of the closure top wall. The closure is formed in the upper surface of its top wall with a lower recessed portion for the rollable member to partly fit...
A flow control device comprising a case having a disk seat and a tubular portion, a closure mounted to said tubular portion of said case, said closure having a top wall, a spindle including an upper spindle member and a lower spindle member, means connecting said upper and lower spindle members for axial movement together while permitting said lower spindle member to rotate relative to said upper spindle member, a disk at the lower end of said lower spindle member and adapted to engage said disk seat, an annular spring support attached to a lower end of ...