Patent US3323172A successfully refreshed from Google Patents.
US3323172A
Expired / Lapsed
US
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Extrusion apparatus
Assignee: Weyerhaeuser Co
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Filing: 1965-01-22
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Granted: 1967-06-06
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Expires: 1985-01-22
Abstract
No abstract record available.
Inventors
- 👤 Darrell E Pierson
- 👤 Huff M Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:54
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/34; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN APPARATUS FOR EXTRUDING FILMS AND COATING, COMPRISING: (A) A MANDREL MEANS HAVING A BASE SECTION AND A FORMING MANDREL PORTION ON SAID BASE INCLUDING MANIFOLD SURFACES; (B) BUSHING MEANS HAVING A MANDREL RECEIVING CAVITY WITH MANIFOLD SURFACES THEREON AND TOGETHER WITH MANIFOLD SURFACES ON SAID FORMING MANDREL PORTION, DEFINING A MANIFOLD FOR SAID APPARATUS; (C) A FACE PLATE MEANS FOR ATTACHMENT TO SAID BUSHING MEANS HAVING A CENTRALLY LOCATED MANDREL RECEIVING CAVITY WHICH, TOGETHER WITH SAID BUSHING MEANS AND SAID FORMING MANDREL PORTION, DEFINE AN ADJUSTING PLATE CAVITY; AND (D) AN ENDLESS, FLEXI BLE ADJUSTMENT PLATE MEANS IN SAID ADJUSTMENT PLATE CAVITY SURROUNDING SAID FORMING MANDREL PORTION TO FORM A CONTINUOUS DIE LAND CAVITY, SAID ADJUSTMENT PLATE MEANS HAVING CONTROL MEANS THEREON FOR MOVING PREDETERMINED PORTIONS OF SAID ADJUSTMENT PLATE MEANS WITH RESPECTE TO SAID FORMING MANDREL PORTION.
Claim 2
Independent Claim
139 words
AN APPARATUS FOR EXTRUDING FILMS AND COATING, COMPRISING: (A) A MANDREL MEANS HAVING A BASE SECTION AND A FORMING MANDREL PORTION ON SAID BASE INCLUDING MANIFOLD SURFACES; (B) BUSHING MEANS HAVING A MANDREL RECEIVING CAVITY WITH MANIFOLD SURFACES THEREON AND TOGETHER WITH MANIFOLD SURFACES ON SAID FORMING MANDREL PORTION, DEFINING A MANIFOLD FOR SAID APPARATUS; (C) A FACE PLATE MEANS FOR ATTACHMENT TO SAID BUSHING MEANS HAVING A CENTRALLY LOCATED MANDREL RECEIVING CAVITY WHICH, TOGETHER WITH SAID BUSHING MEANS AND SAID FORMING MANDREL PORTION, DEFINE AN ADJUSTING PLATE CAVITY; AND (D) AN ENDLESS, FLEXI BLE ADJUSTMENT PLATE MEANS IN SAID ADJUSTMENT PLATE CAVITY SURROUNDING SAID FORMING MANDREL PORTION TO FORM A CONTINUOUS DIE LAND CAVITY, SAID ADJUSTMENT PLATE MEANS HAVING CONTROL MEANS THEREON FOR MOVING PREDETERMINED PORTIONS OF SAID ADJUSTMENT PLATE MEANS WITH RESPECTE TO SAID FORMING MANDREL PORTION.
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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) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |