US3187381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for molding hollow articles
Assignee: INJECTICON INTERNATIONAL Inc
•
Filing: 1961-04-28
•
Granted: 1965-06-08
•
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
2026-10-25 13:48
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.
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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) | 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 |