US3323172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion apparatus
Assignee: Weyerhaeuser Co
•
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 16:00
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.
References Cited (Backward Citations)
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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 |