Patent US3840318A successfully refreshed from Google Patents.
US3840318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruder with deckle bar having heating and cooling means
Assignee: Phillips Petroleum Co
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Filing: 1972-09-20
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Granted: 1974-10-08
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Expires: 1992-09-20
Abstract
Abstract A method for controlling the extrudate emerging from an extruder is provided by sealing a portion of the extrusion die opening with a deckle bar into which is incorporated means for affecting the temperature at the surface of the deckle bar. The embodiments of this invention provide deckle bars into which are incorporated means for heating, cooling and heating and cooling in combination.
Inventors
- 👤 E Solop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:06
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/86; B29C48/87; B29C48/03; B29C48/07; B29C48/08; B29C48/30; B29C48/305; B29C48/865
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
A deckle bar with means for affecting the temperature at the surface of the deckle bar said means comprising: a. means for cooling the sealing face of the deckle, and b. means for supplying heat to surface of the deckle to which the edge of the extrudate conforms on passing thereby.
Claim 2
Dependent Claim
51 words
A deckle bar with means for affecting the temperature at the surface of the deckle bar said means comprising: a. means for cooling the sealing face of the deckle, and b. means for supplying heat to surface of the deckle to which the edge of the extrudate conforms on passing thereby.
Claim 3
Dependent Claim
14 words
A deckle bar of claim 1 comprising means for controlling the degree of cooling.
Claim 4
Dependent Claim
14 words
A deckle bar of claim 1 comprising means for controlling the supply of heat.
Claim 5
Dependent Claim
14 words
In combination, an extrusion die with a deckle bar of claim 1 attached thereto.
Claim 6
Dependent Claim
17 words
A deckle bar of claim 1 wherein the means of cooling comprises means for circulating cooling fluid.
Claim 7
Dependent Claim
15 words
A deckle bar of claim 1 wherein means for heating comprises an electrical cartridge heater.
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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |