US3863960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for tube fittings
Assignee: Individual
•
Filing: 1973-11-26
•
Granted: 1975-02-04
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Expires: 1993-11-26
Abstract
Abstract A tube connection comprising a fitting having a threaded end portion extending through a hole into a tube and an elastic sleeve disposed in said hole around said threaded end portion, said sleeve having an inner collar engaging the inner surface of the tube and an outer collar engaging the outer surface of the tube, and the fitting having a flange portion which presses against the outer collar to maintain both collars in sealing contact with said tube.
Inventors
- 👤 Rune Sigvard Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/08; F16L41/088
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
The combination of a fitting and sealing element for fitting a branch pipe to an opening in a structure, comprising: a structure having inner and outer surfaces with an opening passing therethrough; a generally tubular sealing element of resilient material having axially spaced circumferential shoulder rings; a generally cylindrical fitting having an externally threaded portion of an outer diameter greater than the internal diameter of said tubular sealing element and an external annular shoulder adjacent one end of said threaded portion; said sealing element extending through said opening with its circumferential shoulder rings respectively abutting the inner and outer surfaces of said structure around said opening, said fitting being threaded through said sealing element with its annular shoulder abutting one of said circumferential shoulder rings; and that portion of said fitting and sealing elements, radially inwardly of said one shoulder ring, being radially spaced and free of threaded engagement with each other whereby further rotation of said fitting axially compresses said sealing member and urges said shoulder rings axially toward each other into firm sealing engagement with said inner and outer surfaces of said structure.
Claim 2
Dependent Claim
185 words
The combination of a fitting and sealing element for fitting a branch pipe to an opening in a structure, comprising: a structure having inner and outer surfaces with an opening passing therethrough; a generally tubular sealing element of resilient material having axially spaced circumferential shoulder rings; a generally cylindrical fitting having an externally threaded portion of an outer diameter greater than the internal diameter of said tubular sealing element and an external annular shoulder adjacent one end of said threaded portion; said sealing element extending through said opening with its circumferential shoulder rings respectively abutting the inner and outer surfaces of said structure around said opening, said fitting being threaded through said sealing element with its annular shoulder abutting one of said circumferential shoulder rings; and that portion of said fitting and sealing elements, radially inwardly of said one shoulder ring, being radially spaced and free of threaded engagement with each other whereby further rotation of said fitting axially compresses said sealing member and urges said shoulder rings axially toward each other into firm sealing engagement with said inner and outer surfaces of said structure.
Claim 3
Dependent Claim
28 words
The combination defined in claim 1 wherein said radially spaced portions are of an axial extent at least equal to the axial dimension of said one shoulder ring.
Claim 4
Dependent Claim
32 words
The combination defined in claim 2 wherein said radially spaced portion of said sealing element is of an inner diameter greater than the outer diameter of externally threaded portions of said fitting.
Claim 5
Dependent Claim
27 words
The combination defined in claim 3 wherein said radially spaced portion of said sealing element is conically tapered inwardly in a direction away from said annular shoulder.
Claim 6
Dependent Claim
49 words
The combination defined in claim 1 wherein said structure is a generally cylindrical conduit, the shoulder ring of said sealing element which engages the inner surface of said conduit having a generally conical peripheral surface substantially perpendicular to the inner surface of said conduit when viewed in transverse section.
Claim 7
Dependent Claim
25 words
The combination defined in claim 1 wherein the periphery of said annular shoulder is of non-circular outline adapted to be engaged by a wrenching tool.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |