Single seal pipeline tapping fixture having secure valve
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-043/00
출원번호
US-0672696
(1984-11-19)
발명자
/ 주소
Cowan, Arnold A.
출원인 / 주소
Gem Products, Inc.
대리인 / 주소
Cislo, O'Reilly & Thomas
인용정보
피인용 횟수 :
12인용 특허 :
3
초록▼
A piercing valve comprises upper and lower blocks having, respectively, lower and upper mating surfaces. Each mating surface has a positionally corresponding generally linear groove extending thereacross. The upper block has a cylindrical bore extending vertically therethrough and intersecting the g
A piercing valve comprises upper and lower blocks having, respectively, lower and upper mating surfaces. Each mating surface has a positionally corresponding generally linear groove extending thereacross. The upper block has a cylindrical bore extending vertically therethrough and intersecting the grooved lower surface thereof. An upper bore section is adapted for receiving screw threads, with the topmost section of the bore having a diameter less than that of the threaded upper section thereof; the lower section of the bore is of a diameter larger than that of the upper section. The upper block further has an access port extending therethrough and intersecting the bore along the lower section thereof, a cylindrical piercing needle, and a cylindrical unitary seal. The piercing needle has an upper threaded portion having a radial diameter suitable for engaging the threads of the bore, a coaxial central portion having a decreasing radial diameter, and a coaxial lower portion having means for tapping an access hole. A cylindrical seal having a gas or liquid communication there through so as to permit the communication of the gas or liquid from a point external to the mated upper and lower portions of the block into the region defined by the grooves thereof is coaxially interposed between the valve and the inner bore surface of the upper fixtures. The seal further extends above the intersection point of the access port with the bore and is of a length to make sealing contact with the surface of the pipeline being pierced.
대표청구항▼
1. An externally attachable and sealed pipeline system piercing valve comprising: (a) upper and lower blocks having, respectively, lower and upper mating surfaces, said mating surfaces each having a positionally corresponding generally linear groove extending thereacross, said upper block having
1. An externally attachable and sealed pipeline system piercing valve comprising: (a) upper and lower blocks having, respectively, lower and upper mating surfaces, said mating surfaces each having a positionally corresponding generally linear groove extending thereacross, said upper block having a generally cylindrical bore extending vertically therethrough and intersecting the grooved lower surface thereof, the upper section of said bore being adapted for receiving screw threads with the topmost section of said bore having a diameter less than that of the threaded upper section thereof, the lower section of said bore having a diameter greater than that of said upper section to define a sealing chamber, said upper block further having an access port extending therethrough and intersecting said bore along said lower section thereof; (b) a cylindrical piercing needle having an upper threaded portion having a radial diameter suitable for engaging the threads of said bore, a coaxial central portion having a decreasing radial diameter, and a coaxial lower portion having means for tapping an access hole in said pipeline; (c) a cylindrical unitary seal coaxially interposed in said sealing chamber between said piercing needle and the inner bore surface of said upper block, said seal extending above the intersection point of said access port with said bore and of a length to make sealing contact with the surface of the pipeline being pierced, said seal including an opening extending through the cylindrical wall thereof so as to permit the communication of a fluid from a point external to the mated upper and lower portions of said block into the region defined by the grooves thereof and said needle being adapted to seal and block communication between said access hole and said opening; and (d) means for clamping said upper and lower blocks together about said pipeline. 2. The piercing valve of claim 1 in which said linear groove in said upper block has a semi-elliptical cross-section. 3. A piercing pipeline valve comprising: (a) an upper block having a cylindrical piercing needle bore hole extending therethrough and a semi-elliptical groove extending along a lower surface of said upper block so as to intersect said bore hole, said groove being suitable for receiving a generally corresponding portion of a pipeline, said bore hole extending generally upward and oriented perpendicular with respect to the groove, with an upper threaded section and a lower section having a diameter larger than that of said upper section, said upper block further having an inlet port and gas access tube intersecting the bore hole along said lower section so as to permit the otherwise free communication of gasses from said inlet port, through the portion of said bore hole and into the semi-elliptical region of said groove; (b) a piercing needle having a lower tapping needle portion, a central portion characterized by a radial diameter graduated section coaxially interposed between said tapping needle and an upper cylindrical section of generally uniform radial diameter, and an upper threaded portion having a radial diameter generally matching that of the valve bore hole, a corresponding upper portion of said bore hole having appropriately matching threads; (c) a lower block having corresponding mating surfaces to opposed surfaces of said upper block and having an aligned groove to said semi-elliptical groove extending along said lower block's upper surface to receive an opposed portion of a pipeline as received in said upper block groove. (d) a seal element coaxially interposed between said piercing needle and the inner bore surface of said upper block, said seal adapted to provide sealing contact against (1) a portion of said piercing needle, (2) the upper portion of said lower section of said bore, and (3) a portion of said pipeline surrounding the area to be pierced, said seal including an opening extending through the cylindrical wall thereof so as to permit and block the communication of a fluid from a point external to the mated upper and lower portions of said upper and lower blocks into the region defined by the grooves thereof; and (e) means for clamping said upper and lower blocks together about a pipeline. 4. The valve of claim 3 in which the topmost section of said bore has a diameter less than that of said threaded section. 5. The valve of claim 4 wherein said seal element is of conformable material. 6. The valve of claim 5 wherein said piercing needle has an enlarged head portion and including a further sealing contact between said seal and said radial diameter graduated section of said piercing needle. 7. The valve of claim 6 wherein said bore hole in said upper block is larger in diameter than said enlarged head portion of said piercing needle. 8. The valve of claim 6 wherein a portion of said bore hole is threaded to threadably receive said piercing needle in threadable relationship therewith. 9. The valve of claim 8 wherein said seal has an upper head portion and a lower enlarged portion having inwardly directed radial surfaces. 10. The valve of claim 8 wherein said seal has a lower most edge innerset from said lower enlarged portion and is bead-like in cross-sectional configuration.
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이 특허에 인용된 특허 (3)
Mouranie Edward M. (Southfield MI), Gas line pierce valve.
McKinnon Eugene T. (Pacific Palisades CA) Drutz Alvin S. (Los Angeles CA) Danta Randall C. (Reseda CA) Zetterberg Niklas F. (Bend OR), Piercing valve for tapping pipelines.
Appler, Paul; Cranton, George E.; Brass, Jack, Compositions and methods for injection of sealants and/or drying agents into air conditioning and refrigeration systems.
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