US4377984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting assembly for pipe lining equipment
Assignee: SPINIELLO CONSTRUCTION Co
•
Filing: 1981-03-13
•
Granted: 1983-03-29
•
Expires: 2001-03-13
Abstract
Abstract An assembly for connecting pipe lining machine to a device to be pulled through a pipeline or the like is provided in which a coiled connector spring is attached between the device to be pulled through the pipe and the lining machine. A keeper member fixed to the connector is designed to be removably connected to a cement lining machine while permitting relative rotation thereof.
Inventors
- 👤 Frank Donnelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:44
CPC Classifications
E; E03; E03F; E03F3/00; E03F3/06; B; B05; B05C; B05C7/00; B05C7/04; B05C7/06; B05C7/08; E04; E04F; E04F21/00; E04F21/02; E04F21/06; E04F21/14; F; F16; F16L; F16L55/00; F16L55/16; F16L55/162; F16L55/1645; E03F2003/065; Y; Y10; Y10S; Y10S118/00; Y10S118/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
Apparatus connecting a device to be pulled through a pipeline to a pipe lining machine which is attached to a cable for pulling said machine through said pipe, said apparatus comprising a first coiled spring, means for connecting one end of said first coiled spring to said pipe lining machine, a second coiled spring, means for connecting one end of said second coiled spring to said device, and means for quick-detachably connecting the other ends of said coiled springs to each other.
Claim 2
Dependent Claim
82 words
Apparatus connecting a device to be pulled through a pipeline to a pipe lining machine which is attached to a cable for pulling said machine through said pipe, said apparatus comprising a first coiled spring, means for connecting one end of said first coiled spring to said pipe lining machine, a second coiled spring, means for connecting one end of said second coiled spring to said device, and means for quick-detachably connecting the other ends of said coiled springs to each other.
Claim 3
Dependent Claim
66 words
The apparatus of claim 1 wherein said connecting means comprises a keeper member attached to the other end of one of said second coiled spring and a connector member attached to the other end of the first coiled spring and adapted to be inserted in said keeper member to provide said connection, such that the coiled springs are maintained in solid alignment without angular movement therebetween.
Claim 4
Dependent Claim
106 words
The apparatus of claim 2 in which a first rod extends from the lining machine, an enlarged head is integrally formed at the end of said rod and attached to one end of said first spring. and said keeper member having an internal chamber defining an enlarged access opening for receiving said connector member and a smaller access opening for receiving a second rod so that said connector member can be inserted into said chamber through said opening and then moved relative to said keeper member so that said connector member extends underneath said smaller access opening and thus retains said connector member within said chamber.
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) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |