Patent US3833246A successfully refreshed from Google Patents.
US3833246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for plastic conduit
Assignee: Apache Corp
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Filing: 1973-08-06
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Granted: 1974-09-03
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Expires: 1993-08-06
Abstract
Abstract A coupling for flexible, relatively hard plastic conduit comprising a tubular nipple which is inserted into the conduit and a sleeve which surrounds the conduit, the coupling retaining the conduit in position but permitting rotation of the outer sleeve with respect to the hose for securing the same to a mating coupling member. The nipple member is provided with annular ribs which except for an outer flange abutting the end of the conduit are the only portions of the nipple which are of a greater diameter than the interior diameter of the hose. The outer sleeve has an outer coupling portion designed to couple with a male coupling member, an intermediate section of larger internal diameter than the external diameter of the conduit, and an inner portion having an internal diameter substantially equal to but slightly greater than the external diameter of the conduit. When assembled on the conduit, the intermediate portion of the outer sleeve overlies the annular ribs of the nipple which push portions of the conduit outwardly into the intermediate portion of the outer sleeve. The outer coupling portion of the outer sleeve is preferably a female coupling member designed to be tightly coupled with a male coupling member, the end of which presses against the outer flange of the nipple members to press it into sealing engagement with the outer wall of the intermediate portion of the outer sleeve.
Inventors
- 👤 H Wake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:06
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/22; F16L33/223
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
277 words
A conduit coupling for a conduit of flexible relatively hard plastic, said coupling comprising: a tubular nipple having an outer diameter approximately equal to the inner diameter of the conduit to which the coupling is to be secured, said nipple having at least one exterior annular rib having an outer diameter substantially exceeding the inner diameter of such a conduit, the walls of said rib being inclined at an angle of less than 90* with respect to each other and the inner wall being inclined at an angle of less than 45* with respect to the longitudinal axis of the nipple to facilitate the insertion of the nipple into the conduit, said nipple terminating at its outer end in a flange having an outer diameter substantially exceeding the outer diameter of the conduit, and an outer sleeve having an outer coupling portion and inner and intermediate portions of different interior diameters, said intermediate portion underlying the rib or ribs of said nipple when the nipple is disposed within said sleeve with the flange thereof abutting the outer wall of said intermediate portion and having an interior diameter greater than the outer diameter of the rib or ribs plus twice the thickness of the wall of the conduit, and said inner portion having an interior diameter approximately equal to the outer diameter of the conduit so that when such a conduit is clamped between said nipple and said sleeve member with the flange of the nipple abutting the outer wall of the intermediate portion, the conduit is held against removal from said sleeve but loosely enough to enable said sleeve to be rotated with respect to said conduit.
Claim 2
Dependent Claim
277 words
A conduit coupling for a conduit of flexible relatively hard plastic, said coupling comprising: a tubular nipple having an outer diameter approximately equal to the inner diameter of the conduit to which the coupling is to be secured, said nipple having at least one exterior annular rib having an outer diameter substantially exceeding the inner diameter of such a conduit, the walls of said rib being inclined at an angle of less than 90* with respect to each other and the inner wall being inclined at an angle of less than 45* with respect to the longitudinal axis of the nipple to facilitate the insertion of the nipple into the conduit, said nipple terminating at its outer end in a flange having an outer diameter substantially exceeding the outer diameter of the conduit, and an outer sleeve having an outer coupling portion and inner and intermediate portions of different interior diameters, said intermediate portion underlying the rib or ribs of said nipple when the nipple is disposed within said sleeve with the flange thereof abutting the outer wall of said intermediate portion and having an interior diameter greater than the outer diameter of the rib or ribs plus twice the thickness of the wall of the conduit, and said inner portion having an interior diameter approximately equal to the outer diameter of the conduit so that when such a conduit is clamped between said nipple and said sleeve member with the flange of the nipple abutting the outer wall of the intermediate portion, the conduit is held against removal from said sleeve but loosely enough to enable said sleeve to be rotated with respect to said conduit.
Claim 3
Dependent Claim
65 words
The conduit coupling of claim 1 in which the outer coupling portion of said outer sleeve is a female coupling member designed to be engaged with a male coupling member and in which the outer portion of the flange of the nipple is designed to be pressed into sealing engagement with the outer wall of said intermediate portion by the end of said male coupling.
Claim 4
Dependent Claim
53 words
The conduit coupling of claim 2 in which the outer wall of said intermediate portion of said outer sleeve is a shoulder disposed substantially perpendicularly to the longitudinal axis of said sleeve and extending from the interior of the intermediate portion of the sleeve to the coupling portion of said female coupling member.
Claim 5
Dependent Claim
32 words
The conduit coupling of claim 1 in which the outer wall of said annular rib on said nipple member extends substantially perpendicularly with repsect to the longitudinal axis of said nipple member.
Claim 6
Dependent Claim
21 words
The conduit coupling of claim 2 in which the coupling portion of the female coupling member is an internally threaded portion.
Claim 7
Dependent Claim
29 words
The conduit coupling of claim 1 in which the interior diameter of the inner portion of the outer sleeve is slightly greater than the outer diameter of the conduit.
Claim 8
Dependent Claim
263 words
A conduit of flexible relatively hard plastic and a coupling secured thereto, said coupling comprising: a tubular nipple inserted into the end of said conduit and having an outer diameter approximately equal to the inner diameter of the conduit, said nipple having at least one exterior annular rib having an outer diameter substantially exceeding the inner diameter of such a conduit, the walls of said rib being inclined at an angle of less than 90* with respect to each other and the inner wall being inclined at an angle of less than 45* with respect to the longitudinal axis of the nipple to facilitate the insertion of the nipple into the conduit, said nipple terminating at its outer end in a flange abutting the end of said conduit and having an outer diameter substantially exceeding the outer diameter of the conduit, and an outer sleeve having an outer coupling portion and inner and intermediate portions of different interior diameters, said intermediate portion overlying the rib or ribs of the said nipple with the flange thereof abutting the outer wall of said intermediate portion and having an interior diameter greater than the outer diameter of the rib or ribs plus twice the thickness of the wall of the conduit, and said inner portion having an inteRior diameter approximately equal to the outer diameter of the conduit so the conduit is clamped between said nipple and said sleeve member sufficiently firmly to prevent removal of the conduit from the coupling but loosely enough to enable said sleeve to be rotated with respect to said conduit.
Claim 9
Dependent Claim
263 words
A conduit of flexible relatively hard plastic and a coupling secured thereto, said coupling comprising: a tubular nipple inserted into the end of said conduit and having an outer diameter approximately equal to the inner diameter of the conduit, said nipple having at least one exterior annular rib having an outer diameter substantially exceeding the inner diameter of such a conduit, the walls of said rib being inclined at an angle of less than 90* with respect to each other and the inner wall being inclined at an angle of less than 45* with respect to the longitudinal axis of the nipple to facilitate the insertion of the nipple into the conduit, said nipple terminating at its outer end in a flange abutting the end of said conduit and having an outer diameter substantially exceeding the outer diameter of the conduit, and an outer sleeve having an outer coupling portion and inner and intermediate portions of different interior diameters, said intermediate portion overlying the rib or ribs of the said nipple with the flange thereof abutting the outer wall of said intermediate portion and having an interior diameter greater than the outer diameter of the rib or ribs plus twice the thickness of the wall of the conduit, and said inner portion having an inteRior diameter approximately equal to the outer diameter of the conduit so the conduit is clamped between said nipple and said sleeve member sufficiently firmly to prevent removal of the conduit from the coupling but loosely enough to enable said sleeve to be rotated with respect to said conduit.
Claim 10
Dependent Claim
66 words
The conduit and coupling of claim 1 in which the outer coupling portion of said outer sleeve is a female coupling member designed to be engaged with a male coupling member and in which the outer portion of the flange of the nipple is designed to be pressed into sealing engagement with the outer wall of said intermediate portion by the end of the male coupling.
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |