Patent US3220058A successfully refreshed from Google Patents.
US3220058A
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Mold charging apparatus
Assignee: Lodge and Shipley Co
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Filing: 1962-08-20
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Granted: 1965-11-30
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Expires: 1982-08-20
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Ehrenfreund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:16
CPC Classifications
B; B29; B29C; B29C31/00; B29C31/04; B29C31/041; B29C31/02; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445; Y; Y10; Y10S; Y10S264/00; Y10S264/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
MOLD CHARGING APPARATUS COMPRISING IN COMBINATION A MOLD CHARGE, AT LEAST ONE MOLD CAVITY WITH A GATE OPENING INTO SAID CAVITY, A CONDUIT HAVING A DISCHARGE OPENING, MEANS FOR GAS ENTRAINING PLASTIC PARTICLES THROUGH SAID CONDUIT, MEANS FOR MOVING SAID CONDUIT RELATIVE TO SAID GATE, THE SIZE OF SAID GATE IN THE DIRECTION OF MOVEMENT OF THE CONDUIT BEING SUBSTANTIALLY GREATER THAN THE DISCHARGE OPENING OF THE CONDUIT WHEREBY SAID CAVITY IS FILLED THROUGH SAID GATE FROM A MOVING PARTICLE INJECTION SOURCE.
Claim 2
Dependent Claim
82 words
MOLD CHARGING APPARATUS COMPRISING IN COMBINATION A MOLD CHARGE, AT LEAST ONE MOLD CAVITY WITH A GATE OPENING INTO SAID CAVITY, A CONDUIT HAVING A DISCHARGE OPENING, MEANS FOR GAS ENTRAINING PLASTIC PARTICLES THROUGH SAID CONDUIT, MEANS FOR MOVING SAID CONDUIT RELATIVE TO SAID GATE, THE SIZE OF SAID GATE IN THE DIRECTION OF MOVEMENT OF THE CONDUIT BEING SUBSTANTIALLY GREATER THAN THE DISCHARGE OPENING OF THE CONDUIT WHEREBY SAID CAVITY IS FILLED THROUGH SAID GATE FROM A MOVING PARTICLE INJECTION SOURCE.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |