US3818862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe fittings
Assignee: BRIEN J AND ASS O
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Filing: 1971-10-21
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Granted: 1974-06-25
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Expires: 1991-10-21
Abstract
Abstract Apparatus for lining pipes or fittings with cement or like material including a tool comprising a disc mounted on a spindle. The tool is rotated and reciprocated in the pipe and cement is fed into the pipe and onto the disc and is thrown onto the pipe walls. The effective disc diameter equals the required pipe lining diameter so that in reciprocating in the pipe the disc edge smooths the lining.
Inventors
- 👤 Brien J O
- 👤 B Finnimore
- 👤 D Hogg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/06; B; B05; B05B; B05B13/00; B05B13/06; B05B13/0627; B05B13/0636; Y; Y10; Y10S; Y10S118/00; Y10S118/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
An apparatus for lining a pipe with suitable lining magerial, said apparatus comprising: a tool comprising a spindle, a disc mounted on said spindle adjacent a first end thereof, and a plurality of spaced feeding and packing members mounted on the face of said disc adjacent the major length of said spindle, said spindle and disc being adapted to rotate and reciprocate, the effective diameter of said disc being equal to the required inside diameter of the pipe lining; means for locating said pipe coaxially with said spindle whereby said spindle and said disc may rotate and reciprocate internally of said pipe; and means for rotating and reciprocating the spindle and disc within said pipe, whilst said lining material is fed into said pipe, thereby causing said material to be disposed by centrifugal force and guided by said members onto the internal wall of said pipe.
Claim 2
Independent Claim
146 words
An apparatus for lining a pipe with suitable lining magerial, said apparatus comprising: a tool comprising a spindle, a disc mounted on said spindle adjacent a first end thereof, and a plurality of spaced feeding and packing members mounted on the face of said disc adjacent the major length of said spindle, said spindle and disc being adapted to rotate and reciprocate, the effective diameter of said disc being equal to the required inside diameter of the pipe lining; means for locating said pipe coaxially with said spindle whereby said spindle and said disc may rotate and reciprocate internally of said pipe; and means for rotating and reciprocating the spindle and disc within said pipe, whilst said lining material is fed into said pipe, thereby causing said material to be disposed by centrifugal force and guided by said members onto the internal wall of said pipe.
Claim 3
Dependent Claim
19 words
An apparatus as claimed in claim 1, wherein said spindle is substantially vertical and is adapted to reciprocate vertically.
Claim 4
Dependent Claim
84 words
An apparatus as claimed in claim 1, wherein said disc has formed in its rim a plurality of spaced notches, at least one notch being located between each pair of adjacent packing and feeding members, and wherein the spindle is hollow and flexible, the pipe is curved at least for part of its length, and said means for locating said pipe and spindle coaxially include a mandrel extending through said spindle, said mandrel being fixed transversely in relation to the inside of said pipe.
Claim 5
Dependent Claim
92 words
A tool for lining a pipe with suitable lining material, said tool comprising: a spindle; a disc mounted on said spindle adjacent a first end thereof; said spindle and disc being adapted to rotate and reciprocate; and a plurality of spaced feeding and packing members mounted on the face of said disc adjacent the major length of said spindle, each of said feeding and packing members comprising an approximately upright plate extending inwardly from a point adjacent the rim of said disc at an acute angle to the radius of said disc.
Claim 6
Dependent Claim
92 words
A tool for lining a pipe with suitable lining material, said tool comprising: a spindle; a disc mounted on said spindle adjacent a first end thereof; said spindle and disc being adapted to rotate and reciprocate; and a plurality of spaced feeding and packing members mounted on the face of said disc adjacent the major length of said spindle, each of said feeding and packing members comprising an approximately upright plate extending inwardly from a point adjacent the rim of said disc at an acute angle to the radius of said disc.
Claim 7
Dependent Claim
36 words
A tool as claimed in claim 4 further comprising a plurality of spaced notches formed in said rim of said disc, at least one notch being located between each pair of adjacent feeding and packing members.
Claim 8
Dependent Claim
38 words
A tool as claimed in claim 5, wherein each of said notches has the shape of a V, the edge of each of said notches adjacent one of said feeding and packing members converging upwardly toward said member.
Claim 9
Dependent Claim
15 words
A tool as claimed in claim 4, wherein said spindle is a hollow flexible member.
Claim 10
Dependent Claim
14 words
A tool as claimed in claim 4, wherein said spindle is a solid member.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |