Patent US3706824A successfully refreshed from Google Patents.
US3706824A
Expired / Lapsed
US
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System for heating a section of pipe
Assignee: BUEL D HUBER
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Filing: 1971-02-22
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Granted: 1972-12-19
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Expires: 1991-02-22
Abstract
Abstract A system for heating a section of pipe sufficiently to allow bending of the pipe for making curves and right angle bends for installation. The heater has a body portion including an elongated heating chamber with openings at each end for receiving a section of plastic or other heat pliable pipe, and a gas injection section for receiving but diffusing the heated exhaust gas of an internal combustion engine. A supplemental device is utilized for heating the interior of the pipe and comprises an elongated cylindrical member with a plurality of holes for distributing gas supplied to the center of the cylinder into contact with the inside diameter of the pipe to be heated.
Inventors
- 👤 Buel D Huber
- 👤 Howard M Enloe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:38
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/024; B29B13/025; F; F23; F23D; F23D99/00; F23D99/002; F23D99/004; B29C; B29C35/00; B29C35/02; B29C35/04; B29C35/045; B29C2035/047; B29C53/00; B29C53/02; B29C53/08; B29C53/083; B29K; B29K2027/00; B29K2027/06; B29L; B29L2023/00; B29L2023/22; F23D2206/00; F23D2206/0094
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |