US4264293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vented heated platen
Assignee: Shawmut Bank Connecticut NA
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Filing: 1980-01-25
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Granted: 1981-04-28
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Expires: 2000-01-25
Abstract
Abstract A vented platen capable of being heated or cooled is disclosed wherein a plurality of heat exchange channels bored through the width of a plate member are arranged in a plane. The plate member has a plurality of openings on a surface that are vented by vent passages disposed on a plane substantially parallel to the plane of the heat exchange channels.
Inventors
- 👤 Rosemary Rourke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:21
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/10; B29C33/02; B29C33/04; B29C67/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A platen for use in the expansion of thermoformable material comprising: a plate member having first and second face portions; a plurality of openings disposed on said first face portion of said plate member, said plate member having a plurality of heat exchange channels extending through the width of said plate member and a plurality of vent passages extending through said plate member disposed in a plane substantially parallel to and spaced from said first and second face portions of said plate, each of said plurality of vent passages placed in communication with at least one of said plurality of openings, thereby providing venting of the openings through the sides of the plate member.
Claim 2
Dependent Claim
114 words
A platen for use in the expansion of thermoformable material comprising: a plate member having first and second face portions; a plurality of openings disposed on said first face portion of said plate member, said plate member having a plurality of heat exchange channels extending through the width of said plate member and a plurality of vent passages extending through said plate member disposed in a plane substantially parallel to and spaced from said first and second face portions of said plate, each of said plurality of vent passages placed in communication with at least one of said plurality of openings, thereby providing venting of the openings through the sides of the plate member.
Claim 3
Dependent Claim
43 words
A platen according to claim 1 wherein said openings are circular and have a center, and the openings are arranged in pairs of staggered rows with the centers of said openings in each of said pair of rows disposed along substantially parallel lines.
Claim 4
Dependent Claim
39 words
A platen according to claim 2 wherein said plate member is approximately 13/4 inches thick, and each of said openings have a diameter of 3/4 of an inch, a depth of 0.375 inches and have centers 1 inch apart.
Claim 5
Dependent Claim
17 words
A platen according to claim 3 wherein said substantially parallel lines are at most one inch apart.
Claim 6
Dependent Claim
19 words
A platen according to claim 4 wherein said vent passages have a diameter of approximately 1/4 of an inch.
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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) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |