Patent US4023831A successfully refreshed from Google Patents.
US4023831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic pipe fitting
Assignee: UPONOR BV A Corp OF NETHERLANDS
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Filing: 1974-11-26
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Granted: 1977-05-17
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Expires: 1994-11-26
Abstract
Abstract A pipe fitting of polyethylene is provided wherein the pipe fitting is of integral construction and includes (1) a tubular body member that is fusion bonded at each end to (2) a coupling member, and (3) a movable tubular member that engages one coupling member for axial movement in relation thereto, i.e., telescoping action. The pipe fitting is useful for repairing a damaged pipe in that the one coupling member thereof may be bonded to one exposed end of the damaged pipe while the telescoped tubular member may be moved into engagement with and bonded to the other exposed end of the damaged pipe.
Inventors
- 👤 Dexter Mac Arthur Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/20; F16L47/18; F16L47/24; F16L55/00; F16L55/16; F16L55/1608; Y; Y10; Y10S; Y10S285/00; Y10S285/915
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
173 words
A pipe fitting of organic thermoplastic polymeric material for joining two spaced pipe ends comprising a tubular body member; a first coupling member integrally bonded to one end of said tubular body member and adapted to be integrally bonded to one of said spaced pipe ends; a second coupling member integrally bonded to the other end of said tubular body member and having sealing means and stop means carried thereby and disposed therewithin; and a movable tubular member in slidable contact with said second coupling member and said sealing means for axial movement within said second coupling member and said tubular body member, said movable tubular member having an annular flange secured to the end thereof disposed within said second coupling member and said tubular body member for engaging said stop means for limiting the extent of axial movement of said movable tubular member in relation to said second coupling member, whereby said movable tubular member is adapted to be moved adjacent to and bonded to the other of said spaced pipe ends.
Claim 2
Dependent Claim
173 words
A pipe fitting of organic thermoplastic polymeric material for joining two spaced pipe ends comprising a tubular body member; a first coupling member integrally bonded to one end of said tubular body member and adapted to be integrally bonded to one of said spaced pipe ends; a second coupling member integrally bonded to the other end of said tubular body member and having sealing means and stop means carried thereby and disposed therewithin; and a movable tubular member in slidable contact with said second coupling member and said sealing means for axial movement within said second coupling member and said tubular body member, said movable tubular member having an annular flange secured to the end thereof disposed within said second coupling member and said tubular body member for engaging said stop means for limiting the extent of axial movement of said movable tubular member in relation to said second coupling member, whereby said movable tubular member is adapted to be moved adjacent to and bonded to the other of said spaced pipe ends.
Claim 3
Dependent Claim
15 words
The pipe fitting of claim 1 wherein the organic thermoplastic polymeric material thereof is polyethylene.
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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |