US2952876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion of solid rocket grains
Assignee: Phillips Petroleum Co
•
Filing: 1957-12-26
•
Granted: 1960-09-20
•
Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 George E Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:52
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0033; C06B21/0075; B; B29; B29C; B29C48/00; B29C48/001; B29C48/0022; B29C48/022; B29C2793/00; B29C2793/0027; B29C48/03; B29C48/12; B29C48/13; B29K; B29K2503/00; Y; Y10; Y10S; Y10S425/00; Y10S425/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AN EXTRUSION MOLDING APPARATUS, COMPRISING A CYLINDRICAL CONTAINER HAVING AN OPENING AT ONE END THEREOF, MEANS TO FILL SAID CONTAINER WITH EXTRUDABLE MATERIAL, PRESSURE-EXERTING MEANS SLIDABLY DISPOSED IN SAID CONTAINER AND ADAPTED TO COMPRESS SAID MATERIAL, MEANS NORMALLY CLOSING SAID OPENING, LAND MEANS COMMUNICATING WITH SAID OPENING, RECIPROCATING MEANS IN SAID CONTAINER COMPRISING A TAPERED MANDREL ADAPTED TO MOVE ITS ENTIRE LENGTH THROUGH SAID OPENING AND EXTRUDE INTO SAID LAND MEANS AN ARTICLE OF SAID MATERIAL HAVING A TAPERED AXIAL PERFORATION, CONFORMING IN SHAPE TO SAID MANDREL, AND MEANS BIASING THE MOVEMENT OF SAID MANDREL INTO SAID LAND MEANS.
Claim 2
Dependent Claim
99 words
AN EXTRUSION MOLDING APPARATUS, COMPRISING A CYLINDRICAL CONTAINER HAVING AN OPENING AT ONE END THEREOF, MEANS TO FILL SAID CONTAINER WITH EXTRUDABLE MATERIAL, PRESSURE-EXERTING MEANS SLIDABLY DISPOSED IN SAID CONTAINER AND ADAPTED TO COMPRESS SAID MATERIAL, MEANS NORMALLY CLOSING SAID OPENING, LAND MEANS COMMUNICATING WITH SAID OPENING, RECIPROCATING MEANS IN SAID CONTAINER COMPRISING A TAPERED MANDREL ADAPTED TO MOVE ITS ENTIRE LENGTH THROUGH SAID OPENING AND EXTRUDE INTO SAID LAND MEANS AN ARTICLE OF SAID MATERIAL HAVING A TAPERED AXIAL PERFORATION, CONFORMING IN SHAPE TO SAID MANDREL, AND MEANS BIASING THE MOVEMENT OF SAID MANDREL INTO SAID LAND MEANS.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |