US3747960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling
Assignee: ABB Installation Products Inc
•
Filing: 1972-05-15
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Granted: 1973-07-24
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Expires: 1992-05-15
Abstract
Abstract A coupling positionable intermediate the threaded end of a pipe or fitting and a threaded opening where, for example, the manipulation of such pipe or fitting is either limited or restricted in such manner as to prevent direct coupling to the threaded opening. An internally threaded gland nut having a selectively tapered interior portion is rotatably connected to the externally threaded portion of a body member having a selectively tapered external portion spaced from the gland nut tapered portion to provide a selectively formed annular chamber within which is disposed a resilient seal means in the form of an annular ring. Both the seal means and the body member tapered portion are proportioned for contacting engagement with a leading edge of the threaded pipe or fitting advanced into the coupling to provide a controlled seal between the coupling and the fitting or pipe. The gland nut and body member, or selective portions thereof, may be formed of plastic or metallic material, the latter providing means for establishing a metal-to-metal contact and grounding path between the pipe or fitting and the coupling.
Inventors
- 👤 J Bawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:10
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; F; F16; F16L; F16L19/00; F16L19/02; F16L19/0212
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
334 words
A coupling assembly attachable to a threaded opening or the like comprising a fitting having a threaded portion adjacent a first end thereof a hollow body member having an externally threaded portion adjacent a first end thereof, a generally selectively tapered portion adjacent a second end thereof engaging the adjacent inner edge of said first end of said fitting to limit the extent of engagement therebetween, said tapered portion communicating with the interior surface of said body member at said second end thereof, a central portion intermediate said first and said second ends, and a circumferentially disposed raiSed portion adjacent said tapered portion, said body member tapered portion extending up to and communicating with said raised portion; a gland nut rotatively coupling said fitting to said body member said gland nut having an internally threaded portion adjacent a first end thereof, and an inturned portion adjacent a second end thereof, said inturned portion at least partially encircling said body member raised portion to provide rotatable engagement therebetween, said internally threaded portion extending at least partially beyond said body member second end and engaging said threaded portion of said fitting, said gland nut further having an inner surface having a selectively tapered portion intermediate said first and said second ends thereof, said gland nut tapered portion extending outwardly from said internally threaded portion to an inner cylindrical surface thereof intermediate said inturned portion and said tapered portion; and seal means in the form of a generally resilient, selectively proportioned annular ring disposed intermediate said body member tapered portion and said gland nut inner surface tapered portion, the surfaces defining said tapered portions and said gland nut inner cylindrical surface at least partially selectively bounding said seal means and controlling the deformation thereof, said seal means further engaging at least a portion of said first end of said fitting, the engagement of said hollow body member tapered portion with said inner edge of said fitting serving to provide a fully bounded enclosure for said seal means.
Claim 2
Dependent Claim
334 words
A coupling assembly attachable to a threaded opening or the like comprising a fitting having a threaded portion adjacent a first end thereof a hollow body member having an externally threaded portion adjacent a first end thereof, a generally selectively tapered portion adjacent a second end thereof engaging the adjacent inner edge of said first end of said fitting to limit the extent of engagement therebetween, said tapered portion communicating with the interior surface of said body member at said second end thereof, a central portion intermediate said first and said second ends, and a circumferentially disposed raiSed portion adjacent said tapered portion, said body member tapered portion extending up to and communicating with said raised portion; a gland nut rotatively coupling said fitting to said body member said gland nut having an internally threaded portion adjacent a first end thereof, and an inturned portion adjacent a second end thereof, said inturned portion at least partially encircling said body member raised portion to provide rotatable engagement therebetween, said internally threaded portion extending at least partially beyond said body member second end and engaging said threaded portion of said fitting, said gland nut further having an inner surface having a selectively tapered portion intermediate said first and said second ends thereof, said gland nut tapered portion extending outwardly from said internally threaded portion to an inner cylindrical surface thereof intermediate said inturned portion and said tapered portion; and seal means in the form of a generally resilient, selectively proportioned annular ring disposed intermediate said body member tapered portion and said gland nut inner surface tapered portion, the surfaces defining said tapered portions and said gland nut inner cylindrical surface at least partially selectively bounding said seal means and controlling the deformation thereof, said seal means further engaging at least a portion of said first end of said fitting, the engagement of said hollow body member tapered portion with said inner edge of said fitting serving to provide a fully bounded enclosure for said seal means.
Claim 3
Dependent Claim
23 words
A coupling as defined in claim 1 wherein at least a portion of said seal means extends beyond said body member second end.
Claim 4
Dependent Claim
24 words
A coupling as defined in claim 2 wherein said body member further comprises a shoulder portion circumferentially disposed generally about said central portion thereof.
Claim 5
Dependent Claim
28 words
A coupling as defined in claim 3 wherein the periphery of said body member shoulder portion is selectively flatted to provide means for rotatably manipulating said body member.
Claim 6
Dependent Claim
16 words
A coupling as defined in claim 1 wherein said body member is formed from metallic material.
Claim 7
Dependent Claim
16 words
A coupling as defined in claim 5 wherein said gland nut is formed from metallic material.
Claim 8
Dependent Claim
37 words
A coupling as defined in claim 1 wherein the maximum spacing between the surfaces defining said body member tapered portion and said gland nut tapered portion is generally equal to the cross-sectional dimension of said seal means.
Claim 9
Dependent Claim
31 words
A coupling as defined in claim 1 wherein at least a portion of the exterior surface of said gland nut is selectively flatted to provide means for the rotatable manipulation thereof.
Claim 10
Dependent Claim
16 words
A coupling a defined in claim 1 wherein said seal means has a generally circular cross-section.
Claim 11
Dependent Claim
37 words
A coupling as defined in claim 9 wherein the maximum spacing between the surfaces defining said body member tapered portion and said gland nut tapered portion is generally equal to the cross-sectional dimension of said seal means.
Claim 12
Dependent Claim
16 words
A coupling as defined in claim 1 wherein said body member is formed from plastic material.
Claim 13
Dependent Claim
32 words
A coupling as defined in claim 11 further comprising a metallic sleeve extending co-axially within said body member and in intimate contact with at least a portion of the interior surface thereof.
Claim 14
Dependent Claim
28 words
A coupling as defined in claim 12 wherein said metallic sleeve comprises a first end communicating with said body member second end generally adjacent said tapered portion thereof.
Claim 15
Dependent Claim
16 words
A coupling as defined in claim 11 wherein said gland nut is formed from plastic material.
Claim 16
Dependent Claim
32 words
A coupling as defined in claim 14 further comprising a metallic sleeve extending co-axially within said body member and in intimate contact with at least a portion of the interior surface thereof.
Claim 17
Dependent Claim
28 words
A coupling as defined in claim 15 wherein said metallic sleeve comprises a first end communicating with said body member second end generally adjacent said tapered portion thereof.
References Cited (Backward Citations)
US896204A
Cited
US1936552A
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US2438529A
Cited
US3207537A
Cited
GB1172566A
Cited
US3501171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |