US3879069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe connection
Assignee: Wavin BV
•
Filing: 1973-09-28
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Granted: 1975-04-22
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Expires: 1993-09-28
Abstract
Abstract A pipe connection comprising a main pipe and a branch pipe, the branch pipe being screwed into a sealing sleeve provided with an internal screw thread. The peripheral end part of the sleeve situated in the main pipe is adapted to the wall part surrounding the opening in the main pipe and is of a substantially uniform thickness.
Inventors
- 👤 Albertus Anthony Oostenbrink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:13
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/08; F16L41/088
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
128 words
A pipe connection between a first pipe and an opening in a curved wall of a second pipe, said connection comprising an elastic recessed sealing sleeve which extends into the opening in the curved wall of the second pipe and engages said wall on the inside and outside thereof, said first pipe having an external screw thread, said sleeve having an internal thread substantially corresponding to the external screw thread on said first pipe and in threaded engagement therewith, said first pipe having a shoulder which abuts against the upper end of the sealing sleeve, said sleeve having a peripheral end part situated in the interior of the second pipe and corresponding to the curvature of said curved wall, said peripheral end part being of substantially uniform thickness.
Claim 2
Dependent Claim
128 words
A pipe connection between a first pipe and an opening in a curved wall of a second pipe, said connection comprising an elastic recessed sealing sleeve which extends into the opening in the curved wall of the second pipe and engages said wall on the inside and outside thereof, said first pipe having an external screw thread, said sleeve having an internal thread substantially corresponding to the external screw thread on said first pipe and in threaded engagement therewith, said first pipe having a shoulder which abuts against the upper end of the sealing sleeve, said sleeve having a peripheral end part situated in the interior of the second pipe and corresponding to the curvature of said curved wall, said peripheral end part being of substantially uniform thickness.
Claim 3
Dependent Claim
128 words
A pipe connection between a first pipe and an opening in a curved wall of a second pipe, said connection comprising an elastic recessed sealing sleeve which extends into the opening in the curved wall of the second pipe and engages said wall on the inside and outside thereof, said first pipe having an external screw thread, said sleeve having an internal thread substantially corresponding to the external screw thread on said first pipe and in threaded engagement therewith, said first pipe having a shoulder which abuts against the upper end of the sealing sleeve, said sleeve having a peripheral end part situated in the interior of the second pipe and corresponding to the curvature of said curved wall, said peripheral end part being of substantially uniform thickness.
Claim 4
Dependent Claim
128 words
A pipe connection between a first pipe and an opening in a curved wall of a second pipe, said connection comprising an elastic recessed sealing sleeve which extends into the opening in the curved wall of the second pipe and engages said wall on the inside and outside thereof, said first pipe having an external screw thread, said sleeve having an internal thread substantially corresponding to the external screw thread on said first pipe and in threaded engagement therewith, said first pipe having a shoulder which abuts against the upper end of the sealing sleeve, said sleeve having a peripheral end part situated in the interior of the second pipe and corresponding to the curvature of said curved wall, said peripheral end part being of substantially uniform thickness.
Claim 5
Dependent Claim
20 words
A pipe connection as claimed in claim 1 comprising a ring element sandwiched between said shoulder and said sealing sleeve.
Claim 6
Dependent Claim
17 words
A pipe connection as claimed in claim 2 wherein said ring element is integral with said sleeve.
Claim 7
Dependent Claim
21 words
A pipe connection as claimed in claim 3 wherein said ring element projects upwardly from said upper end of said sleeve.
Claim 8
Dependent Claim
26 words
A pipe connection as claimed in claim 4 wherein said ring element is flexible and is deformed in the assembled pipe connection to extend radially outwards.
Claim 9
Dependent Claim
33 words
A pipe connection as claimed in claim 1 wherein said elastic sealing sleeve comprises, at lease in the region engaging the outside of said wall, a flange which cooperates with the second pipe.
Claim 10
Dependent Claim
26 words
A pipe connection as claimed in claim 6 wherein said flange corresponds in shape substantially with the shape of the wall with which the flange cooperates.
Claim 11
Dependent Claim
40 words
A pipe connection as claimed in claim 1 wherein said first pipe includes a truncated conical portion on which said external threads are formed, the smallest diameter of said conical portion being at a free end of said first pipe.
Claim 12
Dependent Claim
42 words
A pipe connection as claimed in claim 1 wherein said sleeve has a groove in which said wall of the second pipe is received, said sleeve having a bottom surface at said groove which is provided with at least one circumferential rib.
Claim 13
Dependent Claim
51 words
A sealing sleeve of elastic material having an inner helically threaded profile, an outer surface with an annular groove therein, and an upper edge with an upstanding projecting portion therein, said sleeve having an annular portion bounding the lower edge of the groove, said annular portion being of substantially uniform thickness.
Claim 14
Dependent Claim
51 words
A sealing sleeve of elastic material having an inner helically threaded profile, an outer surface with an annular groove therein, and an upper edge with an upstanding projecting portion therein, said sleeve having an annular portion bounding the lower edge of the groove, said annular portion being of substantially uniform thickness.
Claim 15
Dependent Claim
25 words
A pipe connection as claimed in claim 10 wherein the diameter of said inner threaded profile decreases from the upper edge to the lower edge.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |