Patent US4449925A successfully refreshed from Google Patents.
US4449925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device and method of heating articles
Assignee: Raychem Ltd
•
Filing: 1982-03-01
•
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 05:31
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.
References Cited (Backward Citations)
US2733740A
Cited
US686758A
Cited
US1528046A
Cited
GB212070A
Cited
GB216510A
Cited
GB263539A
Cited
GB272201A
Cited
US2185322A
Cited
GB579227A
Cited
US2699601A
Cited
FR1136330A
Cited
US2847988A
Cited
US2934337A
Cited
DE1115006B
Cited
US3319948A
Cited
US3334879A
Cited
GB1110883A
Cited
US3310047A
Cited
US3396455A
Cited
US3312269A
Cited
US3588301A
Cited
US3679189A
Cited
FR2136112A5
Cited
US3930790A
Cited
US3833338A
Cited
US3816065A
Cited
FR2353793A1
Cited
FR2332910A1
Cited
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 |