USRE28457E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling fitting for connecting two pipes
Assignee: —
•
Filing: 1972-10-25
•
Granted: 1975-07-01
•
Expires: 1992-10-25
Abstract
Abstract A coupling for fluid conduits in which each end portion of two tubes to be connected is provided with a swaged-on adapter carrying the necessary means to connect or disconnect the tubes without disturbing the swaged-on adapter.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
F; F16; F16L; F16L13/00; F16L13/14; F16L13/146; F16L19/00; F16L19/02; F16L19/0212; F16L19/0218; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4991
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
406 words
A coupling fitting for joining two cylindrical tubes at the adjacent ends thereof, (said fitting including a sleeve engaged on the end of each of said two tubes, one of said sleeves having an enlarged portion with external threads, the other of said sleeves having a flange thereon presented to abut said enlarged diameter portion of said one sleeve, and internally threaded fitting mounted over said flange and engaged with said external threaded portion to hold said enlarged portion and flange in abutment, and each of said sleeves with an initially cylindrical inner surface telescoped over each end portion of said tubes to be joined, the sleeves being formed with a plurality of axially spaced and radially thickened gripping bands initially formed on the exterior surface circumscribing the end portion of the tubes to be joined and which bands are transposable to said inner cylindrical surface to deform the outer surface configurations of the tubes, thereby leaving said sleeves with a final outer surface configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes.) , each tube having a wall of uniform thickness and outer and inner cylindrical surface shape, said fitting including a sleeve engaged on the end of each of said two tubes, one of said sleeves having an enlarged diameter portion with external threads, the other of said sleeves having a flange thereon presented to abut said enlarged diameter portion of said one sleeve, an internally threaded fitting mounted over said flange and engaged with said external threaded portion to hold said enlarged portion and flange in abutment, and each of said sleeves having an initially cylindrical inner surface telescoped over an end portion of said tubes to be joined, the sleeves being formed with a plurality of axially spaced and radially thickened gripping bands initially formed on and externally projecting from the exterior surface circumscribing the end portion of the tubes to be joined and which bands are transposable through to said inner cylindrical surface to deform the outer and inner surface configuration of the tubes, thereby leaving said sleeves with a final outer configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes, said transposable bands and sleeves and said tubes being formed of materials in which said tubes have greater spring-back than said sleeves and said sleeves are lengthened differentially relative to said tubes to establish a fluid tight fitting.
Claim 2
Dependent Claim
406 words
A coupling fitting for joining two cylindrical tubes at the adjacent ends thereof, (said fitting including a sleeve engaged on the end of each of said two tubes, one of said sleeves having an enlarged portion with external threads, the other of said sleeves having a flange thereon presented to abut said enlarged diameter portion of said one sleeve, and internally threaded fitting mounted over said flange and engaged with said external threaded portion to hold said enlarged portion and flange in abutment, and each of said sleeves with an initially cylindrical inner surface telescoped over each end portion of said tubes to be joined, the sleeves being formed with a plurality of axially spaced and radially thickened gripping bands initially formed on the exterior surface circumscribing the end portion of the tubes to be joined and which bands are transposable to said inner cylindrical surface to deform the outer surface configurations of the tubes, thereby leaving said sleeves with a final outer surface configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes.) , each tube having a wall of uniform thickness and outer and inner cylindrical surface shape, said fitting including a sleeve engaged on the end of each of said two tubes, one of said sleeves having an enlarged diameter portion with external threads, the other of said sleeves having a flange thereon presented to abut said enlarged diameter portion of said one sleeve, an internally threaded fitting mounted over said flange and engaged with said external threaded portion to hold said enlarged portion and flange in abutment, and each of said sleeves having an initially cylindrical inner surface telescoped over an end portion of said tubes to be joined, the sleeves being formed with a plurality of axially spaced and radially thickened gripping bands initially formed on and externally projecting from the exterior surface circumscribing the end portion of the tubes to be joined and which bands are transposable through to said inner cylindrical surface to deform the outer and inner surface configuration of the tubes, thereby leaving said sleeves with a final outer configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes, said transposable bands and sleeves and said tubes being formed of materials in which said tubes have greater spring-back than said sleeves and said sleeves are lengthened differentially relative to said tubes to establish a fluid tight fitting.
Claim 3
Dependent Claim
192 words
A coupling fitting for joining two cylindrical tubes at the adjacent ends thereof, said fitting including a sleeve engagEd on the end of each of said two tubes, one of said sleeves having a portion with external threads and a seal surface, the other of said sleeves having a seat thereon presented to engage with said seal surface of said one sleeve, an internally threaded fitting mounted over said seat and engaged with said external threaded portion to hold said seal surface and said seat in abutment, and radially thickened gripping bands initially formed on the exterior surface of each fitting sleeve and circumscribing the end portion of the tubes to be joined and which bands are transposable to said inner cylindrical surface to deform the outer surface configurations of the tubes, thereby leaving said sleeves with a final outer surface configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes(.) , said bands and sleeve and said tubes being formed of materials in which said tubes have greater spring-back than said sleeves and said sleeves lengthen differentially relative to said tubes to establish a fluid seal.
Claim 4
Dependent Claim
192 words
A coupling fitting for joining two cylindrical tubes at the adjacent ends thereof, said fitting including a sleeve engagEd on the end of each of said two tubes, one of said sleeves having a portion with external threads and a seal surface, the other of said sleeves having a seat thereon presented to engage with said seal surface of said one sleeve, an internally threaded fitting mounted over said seat and engaged with said external threaded portion to hold said seal surface and said seat in abutment, and radially thickened gripping bands initially formed on the exterior surface of each fitting sleeve and circumscribing the end portion of the tubes to be joined and which bands are transposable to said inner cylindrical surface to deform the outer surface configurations of the tubes, thereby leaving said sleeves with a final outer surface configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes(.) , said bands and sleeve and said tubes being formed of materials in which said tubes have greater spring-back than said sleeves and said sleeves lengthen differentially relative to said tubes to establish a fluid seal.
Claim 5
Dependent Claim
198 words
A coupling fitting for releasibly joining two pressure fluid carrying cylindrical tubes at the adjacent ends thereof, said fitting including a sleeve engaged on the end of each of said two tubes, each of said sleeves being formed with an initially cylindrical inner surface telescoped over each end portion of said tubes to be joined and with at least one radially thickened gripping band initially formed on the exterior surface circumscribing the end portion of the tubes to be joined and which bands are transposable to said inner cylindrical surface to deform the initial cylindrical outer surface configurations of the tubes, thereby leaving said sleeves with a final outer surface configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes axially beyond said sleeves, said tubes being formed of material having greater spring-back than said sleeve material and said tubes and sleeves lengthening differentially to establish a fluid seal, and said sleeve material being sufficiently rigid to retain the deformation and transposition of said gripping bands from the exterior thereof to said tubes, and means carried by each sleeve operable to engage each other to align said sleeves for passage of pressure fluid.
Claim 6
Dependent Claim
198 words
A coupling fitting for releasibly joining two pressure fluid carrying cylindrical tubes at the adjacent ends thereof, said fitting including a sleeve engaged on the end of each of said two tubes, each of said sleeves being formed with an initially cylindrical inner surface telescoped over each end portion of said tubes to be joined and with at least one radially thickened gripping band initially formed on the exterior surface circumscribing the end portion of the tubes to be joined and which bands are transposable to said inner cylindrical surface to deform the initial cylindrical outer surface configurations of the tubes, thereby leaving said sleeves with a final outer surface configuration of substantially cylindrical extent to conform to the cylindrical outer surfaces of the tubes axially beyond said sleeves, said tubes being formed of material having greater spring-back than said sleeve material and said tubes and sleeves lengthening differentially to establish a fluid seal, and said sleeve material being sufficiently rigid to retain the deformation and transposition of said gripping bands from the exterior thereof to said tubes, and means carried by each sleeve operable to engage each other to align said sleeves for passage of pressure fluid.
Claim 7
Dependent Claim
338 words
In a coupling assembly to releasably connect one conduit with another, the improvement (with one of the conduits to be joined having an end portion formed initially with an exterior cylindrical surface; of a coupling sleeve formed with an inner surface in faying contact with the conduit end portion and with an outer surface having at least one radially thickened and circumferentially directed gripping band radially aligned with the end portion of the conduit; said conduit being formed of material yieldable to pressure from said gripping band and having a greater spring-back than that of said coupling sleeve, whereby on connecting said sleeve and conduit end portion the initial, radially thickened portion of said sleeve is altered by being transposed radially inwardly to reshape the exterior of said sleeve to a substantially uniform configuration with the adjacent portions of said sleeve and said transposed portion constituting a gripping band constricted about the conduit end portion, the material of said sleeve being sufficiently rigid to retain the transposition and displacement of said gripping band, and means on said sleeve to join it to another conduit.) of one conduit end portion having a wall with an initially cylindrical interior and exterior surface configuration, and a coupling sleeve having a wall formed with an interior cylindrical surface and an external surface contoured by at least one radially thickened externally projecting circumferentially directed band, said coupling sleeve being telescoped over said one conduit with said exterior cylindrical surface in faying contact initially with said interior cylindrical surface, said sleeve and conduit being connected by the radial transposition of said radially thickened band into said conduit wall resulting in said conduit wall being deformed in its exterior and interior surfaces by said transposed thickened band, said sleeve having a nominal wall thickness substantially equal to that of said conduit and said conduit being composed of a material having greater spring-back characteristics than the material of said sleeve whereby a compressive sealing contact is maintained in the area of the transposed circumferentially directed band.
Claim 8
Dependent Claim
338 words
In a coupling assembly to releasably connect one conduit with another, the improvement (with one of the conduits to be joined having an end portion formed initially with an exterior cylindrical surface; of a coupling sleeve formed with an inner surface in faying contact with the conduit end portion and with an outer surface having at least one radially thickened and circumferentially directed gripping band radially aligned with the end portion of the conduit; said conduit being formed of material yieldable to pressure from said gripping band and having a greater spring-back than that of said coupling sleeve, whereby on connecting said sleeve and conduit end portion the initial, radially thickened portion of said sleeve is altered by being transposed radially inwardly to reshape the exterior of said sleeve to a substantially uniform configuration with the adjacent portions of said sleeve and said transposed portion constituting a gripping band constricted about the conduit end portion, the material of said sleeve being sufficiently rigid to retain the transposition and displacement of said gripping band, and means on said sleeve to join it to another conduit.) of one conduit end portion having a wall with an initially cylindrical interior and exterior surface configuration, and a coupling sleeve having a wall formed with an interior cylindrical surface and an external surface contoured by at least one radially thickened externally projecting circumferentially directed band, said coupling sleeve being telescoped over said one conduit with said exterior cylindrical surface in faying contact initially with said interior cylindrical surface, said sleeve and conduit being connected by the radial transposition of said radially thickened band into said conduit wall resulting in said conduit wall being deformed in its exterior and interior surfaces by said transposed thickened band, said sleeve having a nominal wall thickness substantially equal to that of said conduit and said conduit being composed of a material having greater spring-back characteristics than the material of said sleeve whereby a compressive sealing contact is maintained in the area of the transposed circumferentially directed band.
Claim 9
Dependent Claim
26 words
The improvement of claim 4 in which said last means comprises a portion of said sleeve having external threads and a surface constituting a seal face.
Claim 10
Dependent Claim
34 words
The improvement of claim 4 in which said gripping band is non-circular and yields to external pressure without losing said non-circular configuration, whereby said sleeve and conduit end portion are united against relative turning.
Claim 11
Dependent Claim
195 words
In a swaged fitting assembly joining two parts in a fluid tight joint, the improvement which consists in a fluid carrying swageable part having an axially elongated tubular wall sleeve formed with an internal wall surface to receive a conduit part to be connected to form the fluid tight joint, said swageable part having a portion of its sleeve wall thickened to form an external wall configuration with a radially extending enlargement transposable by swaging to the internal wall to radially inwardly deform the internal wall; a fluid carrying conduit part having an end portion formed with an external surface shaped to telescope into the sleeve of said swageable part and mate with said internal wall surface, said end portion of the conduit part being deformable upon swaging of said sleeve wall, whereby said radial enlargement upon being transposed to the internal wall correspondingly imprints its configuration into said end portion, said swageable part and sleeve wall and said conduit part being formed of metallic materials in which said conduit part has greater spring-back than said sleeve wall and said sleeve is lengthened differentially relative to said conduit part to establish the fluid tight joint.
Claim 12
Dependent Claim
195 words
In a swaged fitting assembly joining two parts in a fluid tight joint, the improvement which consists in a fluid carrying swageable part having an axially elongated tubular wall sleeve formed with an internal wall surface to receive a conduit part to be connected to form the fluid tight joint, said swageable part having a portion of its sleeve wall thickened to form an external wall configuration with a radially extending enlargement transposable by swaging to the internal wall to radially inwardly deform the internal wall; a fluid carrying conduit part having an end portion formed with an external surface shaped to telescope into the sleeve of said swageable part and mate with said internal wall surface, said end portion of the conduit part being deformable upon swaging of said sleeve wall, whereby said radial enlargement upon being transposed to the internal wall correspondingly imprints its configuration into said end portion, said swageable part and sleeve wall and said conduit part being formed of metallic materials in which said conduit part has greater spring-back than said sleeve wall and said sleeve is lengthened differentially relative to said conduit part to establish the fluid tight joint.
Claim 13
Dependent Claim
35 words
The improvement set forth in claim 7 wherein seal and grip means is disposed between the internal wall surface of said swageable part and the external surface of said end portion of said conduit part.
Claim 14
Dependent Claim
31 words
The improvement set forth in claim 8 wherein seal and grip means is a metallic layer sufficiently soft to assume the swaged imprint without fracture upon transposition of said radial enlargement.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |