US3428289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus
Assignee: EIDP Inc
•
Filing: 1966-09-01
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Granted: 1969-02-18
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Expires: 1986-09-01
Abstract
No abstract record available.
Inventors
- 👤 Robert S Heckrotte
- 👤 Edward F Lewis
- 👤 Elwood A Sinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:20
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/0061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A MOLDING APPARATUS COMPRISING A MOLD HAVING AT LEAST TWO PARTS ADAPTED TO BE HELD TOGETHER ALONG A PARTING LINE TO FORM A MOLD CAVITY, FLUID DISTRIBUTOR MEANS LOCATED ON SAID PARTING LINE ADJACENT THE MOLD CAVITY ADAPTED TO FEED FLUID CASTING MATERIAL INTO THE MOLD CAVITY, SAID DISTRIBUTOR MEANS COMPRISING A HEADER SUBSTANTIALLY PARALLEL TO SAID MOLD CAVITY AND BETWEEN SAID HEADER AND MOLD CAVITY AND IN ABUTTING RELATIONSHIP THERETO A GATE HAVING A LAND OF VARYING WIDTH TO PROVIDE A CONTROLLED FLOW OF SAID CASTING FLUID OUT OF SAID HEADER, SAID GATE RUNNING FROM SAID HEADER TO SAID MOLD CAVITY ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF SAID MOLD CAVITY ADJACENT SAID LAND AND MEANS FOR INTRODUCING CASTING FLUID INTO SAID HEADER.
Claim 2
Dependent Claim
123 words
A MOLDING APPARATUS COMPRISING A MOLD HAVING AT LEAST TWO PARTS ADAPTED TO BE HELD TOGETHER ALONG A PARTING LINE TO FORM A MOLD CAVITY, FLUID DISTRIBUTOR MEANS LOCATED ON SAID PARTING LINE ADJACENT THE MOLD CAVITY ADAPTED TO FEED FLUID CASTING MATERIAL INTO THE MOLD CAVITY, SAID DISTRIBUTOR MEANS COMPRISING A HEADER SUBSTANTIALLY PARALLEL TO SAID MOLD CAVITY AND BETWEEN SAID HEADER AND MOLD CAVITY AND IN ABUTTING RELATIONSHIP THERETO A GATE HAVING A LAND OF VARYING WIDTH TO PROVIDE A CONTROLLED FLOW OF SAID CASTING FLUID OUT OF SAID HEADER, SAID GATE RUNNING FROM SAID HEADER TO SAID MOLD CAVITY ALONG SUBSTANTIALLY THE ENTIRE LENGTH OF SAID MOLD CAVITY ADJACENT SAID LAND AND MEANS FOR INTRODUCING CASTING FLUID INTO SAID HEADER.
References Cited (Backward Citations)
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Cited
US2163814A
Cited
US2227966A
Cited
US2516373A
Cited
US2799435A
Cited
US2878517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |