[특허]Quick connect air-conditioning coupling

Quick connect air-conditioning coupling 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F16L-029/04
출원번호	US-0378500 (1995-01-26)
발명자 / 주소	Haunhorst Gregory A. (Perrysburg OH)
출원인 / 주소	Aeroquip Corporation (Maumee OH 02)
인용정보	피인용 횟수 : 43 인용 특허 : 0

초록 ▼

A coupling for joining together opposing ends of a pressurized refrigerant flow line utilizes a quick connect feature and provides a metal-to-metal seal when connected. When disengaged, opposing ends of the fluid flow line are closed by valves, each of which includes a structure containing an axial passageway and an axially extending valve positioned therein. The valves are yieldingly urged to a closed position when disconnected. The first structure and valve are mounted in a housing having a quick connect feature for retaining the second structure and valve. When connected together, the first structure and valve is moved axially relative to the second structure and valve, while the second structure is maintained in an axially fixed position in the housing. The axially extending first valve engages the axially extending second valve moving it relative to its structure from a closed to an open position while at the same time moving relative to a cooperating sleeve from a closed to an open position. Movement of the first structure in an axial direction causes it to engage the second structure metal-to-metal sealing engagement. Cams actuated by a rotatable handle mounted on the housing effect movement of the first structure.

대표청구항 ▼

A coupling for joining together opposing ends of a pair of refrigerant flow lines comprising: (a) a housing extending in an axial direction generally parallel to the joined flow lines from a first axial end to a second axial end, a web extending laterally across said housing, said web having first and second passageways aligned with said flow lines; (b) a pair of first valve assemblies, one positioned in each of said first and second passageways, each of said first valve assemblies including, (i) a body member slideably positioned in one of said first and second passageways for movement from a retracted position to a forward position closer to said housing first axial end, said body member having (1) a central passageway extending from an attachment end communicating with a refrigerant fluid flow line in the vicinity of said housing second axial end to a forward end, said central passageway having an internal cylindrical wall surface extending to said forward end and (2) an exterior sealing surface adjacent said central passageway forward end; (ii) a sleeve having a first portion positioned in said body member forward end in contact with and axially slideable relative to said internal cylindrical wall surface and a second portion extending out of said body member, said second portion including an exterior cylindrical surface and an inwardly facing sealing surface tapering outwardly; (iii) a stem valve positioned in said central passageway and extending from a rear end to a forward end having a face, said stem valve having a head with an outwardly facing sealing surface tapered for sealing engagement with said sleeve sealing surface, said stem valve mounted on said body member for movement therewith from said retracted position to said forward position; and (iv) a spring within said central passageway yieldingly urging said sleeve away from said attachment end and into sealing engagement with said stem valve outwardly facing sealing surface; and (c) a second valve assembly releasingly engageable with said housing at said first end, said second valve assembly including (i) a support member having an inner end positioned within said housing when engaged thereto, a pair of flow passages axially aligned with said central passageways, said support member having, for each flow passage, an inwardly facing sealing surface adjacent said inner end positioned to be engaged by said body member exterior sealing surface when said body member is in said forward position, an annular shoulder positioned to be engaged by said sleeve second portion when said body member is in said forward position, an annular elastomeric sealing ring between said inwardly facing sealing surface and said shoulder, said elastomeric sealing ring sized to sealingly engage said sleeve exterior cylindrical surface; and (ii) a pair of valves mounted on said second valve assembly, with one valve in each of said flow passages and aligned with one of said stem valves, said valves being yieldingly moveable from a closed position to an open position upon engagement by and movement of said stem valve to said forward position; and (d) means for causing said body members and their stem valves to move axially, said support member annular shoulders stopping axial movement of said sleeves while permitting movement of said body members and stem valves to thereby open said stem valves and said aligned pair of valves of said second valve assembly, each of said sleeve exterior surfaces sealingly engaging each of said annular elastomeric sealing rings and thereafter each of said body member exterior sealing surfaces engaging each of said support member inwardly facing sealing surfaces in metal-to-metal sealing relationship.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Quick connect air-conditioning coupling 원문보기

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Quick connect air-conditioning coupling 원문보기

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