US4449925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device and method of heating articles
Assignee: Raychem Ltd
•
Filing: 1982-03-01
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Granted: 1984-05-22
•
Expires: 2002-03-01
Abstract
Abstract A device for heating an article, especially a heat recoverable article, by means of a gas heating tool comprises an element which is preferably hollow and is heated by a flame from the tool, means for positioning the article within the element and a support for retaining the element on the heating tool. In use, a flame from the tool is directed on to the element and the article is heated over a major part of its surface by radiant heat emitted by the element.
Inventors
- 👤 Alan E. Williams
- 👤 Andrew R. Gibbs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:37
CPC Classifications
B; B29; B29C; B29C61/00; F; F23; F23D; F23D99/00; F23D99/002; F23D99/004
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
198 words
A device suitable for heating an article with a gas heating tool, which integrally comprises: (a) an element in the form of a hollow, substantially tubular right circular cylinder that is open at each end and that is arranged to be heated by a flame from the tool and to radiate thermal energy onto at least a major part of the surface of the article; (b) means for receiving the gas heating tool oriented so that a flame from the tool heats the element, (c) locating means for locating the article in a position spaced apart from the element where at least part of the element is curved around the position in which the article is located, said locating means preventing the article from touching the element, in which spaced apart position the article receives radiant thermal energy from the element, and (d) means for retaining the element in a position between the article and the tool to receive at least a major portion of the flame and to shield the article from the flame, wherein the element has a slot extending from one end to the other to allow the article to be located within the element.
Claim 2
Independent Claim
198 words
A device suitable for heating an article with a gas heating tool, which integrally comprises: (a) an element in the form of a hollow, substantially tubular right circular cylinder that is open at each end and that is arranged to be heated by a flame from the tool and to radiate thermal energy onto at least a major part of the surface of the article; (b) means for receiving the gas heating tool oriented so that a flame from the tool heats the element, (c) locating means for locating the article in a position spaced apart from the element where at least part of the element is curved around the position in which the article is located, said locating means preventing the article from touching the element, in which spaced apart position the article receives radiant thermal energy from the element, and (d) means for retaining the element in a position between the article and the tool to receive at least a major portion of the flame and to shield the article from the flame, wherein the element has a slot extending from one end to the other to allow the article to be located within the element.
Claim 3
Dependent Claim
180 words
A tool for heating an article which integrally comprises: (a) means for holding a gas burner, (b) an element in the form of a hollow substantially tubular right circular cylinder that is open at each end and that is arranged to be heated by a flame from the burner and to radiate thermal energy onto at least a major part of the surface of the article, (c) means for locating the article in a position spaced apart from the element where at least part of the element is curved around the position in which the article is located, said locating means preventing the article from touching the element, in which spaced apart position the article receives radiant thermal energy from the element, and (d) means for retaining the element in a position between the article and the tool to receive at least a major portion of the flame and to shield the article from the flame, wherein the element has a slot extending axially from one end to the other to allow the article to be located within the element.
Claim 4
Dependent Claim
180 words
A tool for heating an article which integrally comprises: (a) means for holding a gas burner, (b) an element in the form of a hollow substantially tubular right circular cylinder that is open at each end and that is arranged to be heated by a flame from the burner and to radiate thermal energy onto at least a major part of the surface of the article, (c) means for locating the article in a position spaced apart from the element where at least part of the element is curved around the position in which the article is located, said locating means preventing the article from touching the element, in which spaced apart position the article receives radiant thermal energy from the element, and (d) means for retaining the element in a position between the article and the tool to receive at least a major portion of the flame and to shield the article from the flame, wherein the element has a slot extending axially from one end to the other to allow the article to be located within the element.
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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) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |