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특허 상세정보

Check valve for fluid bladders

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16K-015/16   
미국특허분류(USC) 5/454 ; 137/223 ; 137/846 ; 417/480
출원번호 US-0783398 (1991-10-28)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 145  인용 특허 : 0
초록

A check valve provides a one-way fluid passage from without to within a fluid bladder formed by a pair of plastic sheets sealed together about their periphery. The check valve is formed by a pair of superimposed films of thermoplastic material, generally equal in length, thermally bonded together at predetermined areas to define the fluid passage throughout the length of the valve. Each of the films, adjacent one end thereof, is sealed to one of the outer sheets where the valve enters the bladder by a seal line of wedge shape. Each of the films has a hig...

대표
청구항

Combination of a check valve and inflatable bladder defined by upper and lower sheets of synthetic plastic material having a seal forming one and another fluid chamber with a fluid passage therebetween, the check valve comprises two layers of plastic film of generally the same length which are sealed together at their side edges and to opposed inner surfaces of the sheets in said passage and having a channel throughout the length thereof for permitting the one-way flow of fluid from the one chamber of the bladder into the other chamber thereof, each of s...

이 특허를 인용한 특허 피인용횟수: 145

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