Patent US3187381A successfully refreshed from Google Patents.
US3187381A
Expired / Lapsed
US
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Apparatus for molding hollow articles
Assignee: INJECTICON INTERNATIONAL Inc
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Filing: 1961-04-28
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Granted: 1965-06-08
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Expires: 1981-04-28
Abstract
No abstract record available.
Inventors
- 👤 George C Britten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:21
CPC Classifications
B; B29; B29C; B29C41/00; B29C41/02; B29C41/08; Y; Y10; Y10S; Y10S264/00; Y10S264/45; Y10S264/72; Y10S425/00; Y10S425/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
APPARATUS FOR MOLDING A HOLLOW ARTICLE, WHICH APPARATUS COMPRISES A MOLD HAVING AN OPENING, MEANS FOR SUPPORTING SAID MOLD WITH ITS OPENING FACING DOWNWARDLY, A RECEPTACLE HAVING AN INLET AT ITS LOWER END AND AN OUTLET AT ITS UPPER END, A PERFORATED PARTITION IN SAID RECEPTACLE FOR DIVIDING SAID RECEPTACLE INTO UPPER AND LOWER SECTIONS AND FOR SUPPORTING A MAS OF FINELY DIVIDED PLASTIC RESIN PARTICLES THEREON, MEANS FOR INTRODUCING A GASEOUS MEDIUM UNDER PRESSURE INTO SAID INLET, MEANS EXTENDING FROM WITHIN SAID MOLD TO SUBSTANTIALLY THE UPPER SURFACE OF SAID PARTITION AND THROUGH SAID OUTLET FOR CONDUCTING RESIN PARTICLES INTO SAID MOLD AND FOR DISTRIBUTING THE PARTICLES WITHIN SAID MOLD TO DEPOSIT THE SAME SUBSTANTIALLY UNIFORMLY ON THE INNER WALLS OF SAID MOLD, AND MEANS FOR HEATING SAID MOLD TO CAUSE THE PARTICLES TO BE CONVERTED TO A RESINOUS LAYER CONSTITUTING THE WALLS OF THE HOLLOW ARTICLE.
Claim 2
Dependent Claim
148 words
APPARATUS FOR MOLDING A HOLLOW ARTICLE, WHICH APPARATUS COMPRISES A MOLD HAVING AN OPENING, MEANS FOR SUPPORTING SAID MOLD WITH ITS OPENING FACING DOWNWARDLY, A RECEPTACLE HAVING AN INLET AT ITS LOWER END AND AN OUTLET AT ITS UPPER END, A PERFORATED PARTITION IN SAID RECEPTACLE FOR DIVIDING SAID RECEPTACLE INTO UPPER AND LOWER SECTIONS AND FOR SUPPORTING A MAS OF FINELY DIVIDED PLASTIC RESIN PARTICLES THEREON, MEANS FOR INTRODUCING A GASEOUS MEDIUM UNDER PRESSURE INTO SAID INLET, MEANS EXTENDING FROM WITHIN SAID MOLD TO SUBSTANTIALLY THE UPPER SURFACE OF SAID PARTITION AND THROUGH SAID OUTLET FOR CONDUCTING RESIN PARTICLES INTO SAID MOLD AND FOR DISTRIBUTING THE PARTICLES WITHIN SAID MOLD TO DEPOSIT THE SAME SUBSTANTIALLY UNIFORMLY ON THE INNER WALLS OF SAID MOLD, AND MEANS FOR HEATING SAID MOLD TO CAUSE THE PARTICLES TO BE CONVERTED TO A RESINOUS LAYER CONSTITUTING THE WALLS OF THE HOLLOW ARTICLE.
References Cited (Backward Citations)
CA589477A
Cited
US2149879A
Cited
US2285370A
Cited
US2346784A
Cited
US2745141A
Cited
US2736925A
Cited
US2885733A
Cited
US2810989A
Cited
US2935765A
Cited
US2915788A
Cited
US2896263A
Cited
US2967331A
Cited
US3030668A
Cited
US2991506A
Cited
GB845059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |