Patent US4400612A successfully refreshed from Google Patents.
US4400612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oven for skin packaging machine
Assignee: AMPAK Inc A CORP OF DE
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Filing: 1981-05-06
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Granted: 1983-08-23
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Expires: 2001-05-06
Abstract
Abstract A film heating oven for a skin packaging machine. The oven has a metallic housing in which are supported a plurality of elongated heaters in spaced parallel relationship. The heaters are energized by a control system which raises their temperature for heating the film and lowers the temperature during other operations of the machine. The housing includes a reflector for each tube to direct the heat downwardly onto the film and further includes an outer covering of insulation to minimize the escape of heat.
Inventors
- 👤 Cleve L. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:51
CPC Classifications
B; B65; B65B; B65B11/00; B65B11/50; B65B11/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
An oven for heating film in a skin packaging machine comprising: a rectangular-shaped housing having an exterior surface and a downwardly facing, open interior; a plurality of inverted channel-shaped reflectors each including a flat base mounted to said housing and downwardly and outwardly flaring wings projecting from said base, said reflectors being mounted in said interior of said housing in parallel, spaced relation; at least two electrical connectors mounted on said flat base of each said reflector; a plurality of elongated heating elements, each of said reflectors receiving at least one of said heating elements mounted to said electrical connectors; thermal insulative material surrounding said exterior surface of said housing; and control means for supplying high energy to said heating elements for a portion of the cycle of operations during which film is heated, and for supplying low energy to said heating elements for the remaining portion of the cycle of operations of the skin packaging machine.
Claim 2
Dependent Claim
157 words
An oven for heating film in a skin packaging machine comprising: a rectangular-shaped housing having an exterior surface and a downwardly facing, open interior; a plurality of inverted channel-shaped reflectors each including a flat base mounted to said housing and downwardly and outwardly flaring wings projecting from said base, said reflectors being mounted in said interior of said housing in parallel, spaced relation; at least two electrical connectors mounted on said flat base of each said reflector; a plurality of elongated heating elements, each of said reflectors receiving at least one of said heating elements mounted to said electrical connectors; thermal insulative material surrounding said exterior surface of said housing; and control means for supplying high energy to said heating elements for a portion of the cycle of operations during which film is heated, and for supplying low energy to said heating elements for the remaining portion of the cycle of operations of the skin packaging machine.
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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) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |