Patent US3099043A successfully refreshed from Google Patents.
US3099043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for vacuum forming hollow articles
Assignee: Phillips Petroleum Co
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Filing: 1961-10-27
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Granted: 1963-07-30
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Expires: 1981-10-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward C Held
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:20
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/28; B29C49/30; B29C49/38; B29C49/02; B29C49/06905; B29C49/0691
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A PROCESS FOR SIMULTANEOUSLY PRODUCING A PLURALITY OF HOLLOW ARTICLES FROM THERMOPLASTIC MATERIAL WHICH CONPRISES PASING TWO SHEETS OF THERMOPLASTIC MATERIAL INTO CONTACT WITH A SOFTENING AMOUNT OF HEAT, THEN INTO CONTACT WITH TWO OPPOSING MOLD DIE HALVES EACH CONTAINING A PLURALITY OF MATCHING CAVITIES; EXHAUSTING AIR FROM BENEATH EACH SHEET TO CAUSE THE THERMOPLASTIC MATERIAL TO CONFORM TO THE SHAPE OF THE MOLD HALVES; BRINGING THE EDGES OF THE MOLD HALVES TOGETHER TO FORM A PLURALITY OF HOLLOW ARTICLES; MAINTAINING COMMUNICATING BETWEEN THE ATMOSPHERE AND THE INTERIOR OF THE HOLLOW ARTICLES; AND SEPARATING THE MOLD HALVES TO RELEASE A PLURALITY OF MOLDED ARTICLES.
Claim 2
Dependent Claim
104 words
A PROCESS FOR SIMULTANEOUSLY PRODUCING A PLURALITY OF HOLLOW ARTICLES FROM THERMOPLASTIC MATERIAL WHICH CONPRISES PASING TWO SHEETS OF THERMOPLASTIC MATERIAL INTO CONTACT WITH A SOFTENING AMOUNT OF HEAT, THEN INTO CONTACT WITH TWO OPPOSING MOLD DIE HALVES EACH CONTAINING A PLURALITY OF MATCHING CAVITIES; EXHAUSTING AIR FROM BENEATH EACH SHEET TO CAUSE THE THERMOPLASTIC MATERIAL TO CONFORM TO THE SHAPE OF THE MOLD HALVES; BRINGING THE EDGES OF THE MOLD HALVES TOGETHER TO FORM A PLURALITY OF HOLLOW ARTICLES; MAINTAINING COMMUNICATING BETWEEN THE ATMOSPHERE AND THE INTERIOR OF THE HOLLOW ARTICLES; AND SEPARATING THE MOLD HALVES TO RELEASE A PLURALITY OF MOLDED ARTICLES.
Claim 3
Dependent Claim
136 words
APPARATUS FOR PRODUCNG SIMULTANEOUSLY A PLURALITY OF HOLLOW THERMOPLASTIC ARTICLES COMPRISING A PLURALITY OF MATCHING MOLD SHELL HALVES EACH HAVING CONTAINED IN AND SPACED FROM SAID SHELL MULTIPLE PERFORATED CAVITIES AND A MANIFOLD MEANS COMMUNICATING WITH AN OPENING IN EACH CAVITY AND WITH THE EXTERIOR OF THE MOLD; A PORT MEANS IN EACH OF SAID SHELLS FOR EXHAUSTING AIR THEREFROM; MEANS FOR CONTINUOUSLY MOVING AND BRINGING INTO JUXAPOSITION SUCCESSIVE PAIRS OF MOLD HALVES; MEANS FOR CONTINUOUSLY SUPPLYING A PAIR OF SPACED APRAT, SOFTENED THERMOPLASTIC SHEETS TO THE MOLD HALVES SO AS TO COVER THE MOLD CAVITIES AS THE MATCHINH HALVES ARE BROUGHT INTO JUXTAPOSITION; MEANS TO EXHAUST AIR FROM THE SPACE WITHIN THE SHELL OF THE MOLD HALVES; AND MEANS TO MAINTAIN THE MANIFOLD IN COMMUNICATION WITH THE INTERTIOR OF THE HOLLOW ARTCILE AND THE ATMOSPHERE.
Claim 4
Dependent Claim
136 words
APPARATUS FOR PRODUCNG SIMULTANEOUSLY A PLURALITY OF HOLLOW THERMOPLASTIC ARTICLES COMPRISING A PLURALITY OF MATCHING MOLD SHELL HALVES EACH HAVING CONTAINED IN AND SPACED FROM SAID SHELL MULTIPLE PERFORATED CAVITIES AND A MANIFOLD MEANS COMMUNICATING WITH AN OPENING IN EACH CAVITY AND WITH THE EXTERIOR OF THE MOLD; A PORT MEANS IN EACH OF SAID SHELLS FOR EXHAUSTING AIR THEREFROM; MEANS FOR CONTINUOUSLY MOVING AND BRINGING INTO JUXAPOSITION SUCCESSIVE PAIRS OF MOLD HALVES; MEANS FOR CONTINUOUSLY SUPPLYING A PAIR OF SPACED APRAT, SOFTENED THERMOPLASTIC SHEETS TO THE MOLD HALVES SO AS TO COVER THE MOLD CAVITIES AS THE MATCHINH HALVES ARE BROUGHT INTO JUXTAPOSITION; MEANS TO EXHAUST AIR FROM THE SPACE WITHIN THE SHELL OF THE MOLD HALVES; AND MEANS TO MAINTAIN THE MANIFOLD IN COMMUNICATION WITH THE INTERTIOR OF THE HOLLOW ARTCILE AND THE ATMOSPHERE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |