Patent US3923443A successfully refreshed from Google Patents.
US3923443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe belling and chamfering machine
Assignee: LITFORD Inc 7451 EMPIRE ST FLORENCE KY 40142
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Filing: 1970-08-07
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Granted: 1975-12-02
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Expires: 1990-08-07
Abstract
Abstract A machine for removing a precut length of plastic pipe from an extrusion line, providing a bell on one end thereof, and providing a chamfer on the opposite end thereof. The pipe is received in a V-shaped trough along which it is longitudinally moved as it is delivered from the extruder. At predetermined intervals, a plurality of hydraulic pushers are actuated to move the pipe laterally from the trough onto a conveyor. The conveyor is indexed to a first position in which the axial location of the pipe is corrected and the end to be belled is heated. In a predetermined sequence of events, the conveyor is then indexed to a second position in which a belling plug is inserted into the heated end of the pipe; simultaneously, the opposite end of the pipe may be provided with an internal or external chamfer. When the conveyor is again indexed, the pipe is deposited onto a suitable system so that it may be conveyed to a shipping point.
Inventors
- 👤 Vernon V Emery
- 👤 Charles W Howe
- 👤 Joseph Marcella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:27
CPC Classifications
B; B29; B29C; B29C31/00; B29C31/002; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29B13/025; B29C57/00; B29C57/02; B29C35/00; B29C35/02; B29C35/04; B29C35/045; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10S; Y10S425/00; Y10S425/20; Y10S425/218
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
120 words
A machine for reforming a length of pipe comprising an indexing conveyor having pipe carrying means thereon, means for moving said pipe carrying means from a first position in which a length of pipe to be reformed is received to a second position in which the length of pipe is aligned with a reforming tool, and a reforming tool positioned adjacent to said indexing conveyor and comprising heater means for heating one end of a length of pipe in alignment therewith including air heating means, air flow means for directing air across said air heating means, and air passage means for directing the heated air across the outer and inner surface of the one end of a length of pipe.
Claim 2
Dependent Claim
120 words
A machine for reforming a length of pipe comprising an indexing conveyor having pipe carrying means thereon, means for moving said pipe carrying means from a first position in which a length of pipe to be reformed is received to a second position in which the length of pipe is aligned with a reforming tool, and a reforming tool positioned adjacent to said indexing conveyor and comprising heater means for heating one end of a length of pipe in alignment therewith including air heating means, air flow means for directing air across said air heating means, and air passage means for directing the heated air across the outer and inner surface of the one end of a length of pipe.
Claim 3
Dependent Claim
58 words
The machine of claim 1 including means for moving said reforming tool relative to a length of pipe in alignment therewith between a first position in which it is substantially removed from the length of pipe and a second position in which it is in an operative position for heating the one end of the length of pipe.
Claim 4
Dependent Claim
35 words
The machine of claim 1 wherein said heater means also comprises, means for returning the heated air to said air flow means after it has passed across the one end of the length of pipe.
Claim 5
Dependent Claim
32 words
The machine of claim 1 including means aligned with the length of pipe at said second position for correcting the axial position of the length of pipe relative to said reforming tool.
Claim 6
Dependent Claim
75 words
The machine of claim 1 including means for causing said indexing conveyor to move from said second position to a third position in which a length of pipe is aligned with at least one reforming tool, at least one reforming tool positioned adjacent said indexing conveyor, and means for moving said at least one reforming tool relatively toward and away from an end of a length of pipe on said conveyor in said third position.
Claim 7
Dependent Claim
29 words
The machine of claim 5 wherein said at least one reforming tool comprises a bell forming tool coaxially aligned with a length of pipe in said third conveyor position.
Claim 8
Dependent Claim
29 words
The machine of claim 5 wherein said at least one reforming tool comprises a bevel cutting tool coaxially aligned with a length of pipe in said third conveyor position.
Claim 9
Dependent Claim
164 words
A machine for reforming a length of pipe comprising an indexing conveyor having pipe carrying means thereon, means for moving said pipe carrying means from a first position in which a length of pipe to be reformed is received to a second position in which the length of pipe is aligned with a reforming tool, a reforming tool positioned adjacent to said indexing conveyor and comprising heater means for heating the air circulating about one end of a length of pipe in alignment therewith, means for moving said indexing conveyor to move from said second position to a third position in which a length of pipe thereon is aligned with a second reforming tool, a second reforming tool positioned adjacent said indexing conveyor comprising a Bevel cutting tool coaxially aligned with a length of pipe in said indexing conveyor at said third position, and means for moving said second reforming tool relatively toward and away from the length of pipe in said third position.
Claim 10
Dependent Claim
164 words
A machine for reforming a length of pipe comprising an indexing conveyor having pipe carrying means thereon, means for moving said pipe carrying means from a first position in which a length of pipe to be reformed is received to a second position in which the length of pipe is aligned with a reforming tool, a reforming tool positioned adjacent to said indexing conveyor and comprising heater means for heating the air circulating about one end of a length of pipe in alignment therewith, means for moving said indexing conveyor to move from said second position to a third position in which a length of pipe thereon is aligned with a second reforming tool, a second reforming tool positioned adjacent said indexing conveyor comprising a Bevel cutting tool coaxially aligned with a length of pipe in said indexing conveyor at said third position, and means for moving said second reforming tool relatively toward and away from the length of pipe in said third position.
Claim 11
Dependent Claim
208 words
A machine for reforming a length of pipe comprising an indexing conveyor having pipe carrying means thereon, means for moving said pipe carrying means from a first position in which a length of pipe to be reformed is received to a second position in which the length of pipe is aligned with a reforming tool, and a reforming tool positioned adjacent to said indexing conveyor and comprising heater means for heating the air circulating about one end of a length of pipe in alignment therewith including a housing having a pipe-receiving opening therein, means mounted in the flow path of the volume of air for heating the air, first passage means within said housing for directing the movement of said heated volume of air toward said pipe-receiving opening, second passage means within said housing for turning said heated air leaving said first passage in a direction away from said pipe-receiving opening and directing it across the outer wall surface, about the end, and across the inner wall surface of a pipe end positioned within said pipe-receiving opening, and third passage means for withdrawing heated air from within a pipe end positioned within said pipe-receiving opening and directing it to the low pressure side of said air moving means.
Claim 12
Dependent Claim
208 words
A machine for reforming a length of pipe comprising an indexing conveyor having pipe carrying means thereon, means for moving said pipe carrying means from a first position in which a length of pipe to be reformed is received to a second position in which the length of pipe is aligned with a reforming tool, and a reforming tool positioned adjacent to said indexing conveyor and comprising heater means for heating the air circulating about one end of a length of pipe in alignment therewith including a housing having a pipe-receiving opening therein, means mounted in the flow path of the volume of air for heating the air, first passage means within said housing for directing the movement of said heated volume of air toward said pipe-receiving opening, second passage means within said housing for turning said heated air leaving said first passage in a direction away from said pipe-receiving opening and directing it across the outer wall surface, about the end, and across the inner wall surface of a pipe end positioned within said pipe-receiving opening, and third passage means for withdrawing heated air from within a pipe end positioned within said pipe-receiving opening and directing it to the low pressure side of said air moving means.
Claim 13
Dependent Claim
90 words
A machine for reforming the ends of a length of plastic pipe comprising a first station including means for heating the air circulating about at least one end of a length of pipe therein and means for axially adjusting the position of the length of pipe therein, a second station including means for reforming the at least one end of the length of pipe heated at said first station by said heating means and means for relatively moving a length of pipe from said first station to said second station.
Claim 14
Dependent Claim
90 words
A machine for reforming the ends of a length of plastic pipe comprising a first station including means for heating the air circulating about at least one end of a length of pipe therein and means for axially adjusting the position of the length of pipe therein, a second station including means for reforming the at least one end of the length of pipe heated at said first station by said heating means and means for relatively moving a length of pipe from said first station to said second station.
Claim 15
Dependent Claim
24 words
The machine of claim 10 including means for fixing a length of pipe in said second station against movement relative to said reforming means.
Claim 16
Dependent Claim
34 words
The machinge of claim 10 wherein said means for reforming the heated end of the length of pipe comprises means for forming a pipe end-receiving bell on the end of the length of pipe.
Claim 17
Dependent Claim
31 words
The machine of claim 10 wherein said second station further includes means for reforming an end of the length of pipe not heated by said heating means at said first station.
Claim 18
Dependent Claim
68 words
The machine of claim 13 wherein said means for reforming the heated end of the length of pipe comprises means for forming a pipe end-receiving bell on the heated end of a length of pipe and said means for reforming the unheated end of the length of pipe comprises means for forming a beveled surface on the pipe wall at the unheated end of a length of pipe.
Claim 19
Dependent Claim
51 words
The machine of claim 10 wherein said means for heating the air circulating about at least one end of a length of pipe includes means for forcing heated air across the inner and outer surfaces of the wall of the length of pipe within a controlled zone at the end thereof.
Claim 20
Dependent Claim
146 words
The machine of claim 10 wherein said means for heating the air circulating about at least one end of a length of pipe includes a housing having a pipe-receiving opening therein, means mounted in the flow path of the volume of air for heating the air, first passage means within said housing for directing the movement of said heated volume of air toward said pipe-receiving opening, second passage means within said housing for turning said heated air leaving said first passage in a direction away from said pipe-receiving opening and directing it across the outer wall surface, about the end, and across the inner wall surface of a pipe end positioned within said pipe-receiving opening, anD third passage means for withdrawing heated air from within a pipe end positioned within said pipe-receiving opening and directing it to the low pressure side of said air moving means.
Claim 21
Dependent Claim
38 words
The device of claim 10 wherein said moving means comprises conveyor means for moving a length of pipe from said first station to said second station in a direction perpendicular to the axis of the length of pipe.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |