Patent US3418684A successfully refreshed from Google Patents.
US3418684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ejector mechanism for a plastic injection molding machine or the like
Assignee: Package Machinery Co
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Filing: 1966-08-31
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Granted: 1968-12-31
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Expires: 1986-08-31
Abstract
No abstract record available.
Inventors
- 👤 Harvey H Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:05
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/64; B29C45/68; B29C45/681; B29C45/40; B29C45/4005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN EJECTOR MECHANISM FOR A PLASTIC INJECTION MOLDING MACHINE OR THE LIKE HAVING A PLATE SUPPORTING A FISRT DIE HALF FOR MOVEMENT FORWARDLY INTO ENGAGEMENT WITH A FIXED SECOND DIE HALF TO DEFINE A CAVITY THEREWITH AND REARWARDLY TO CARRY A PART MOLDED IN THE CAVITY AWAY FROM THE FIXED DIE HALF, SAID MECHANISM COMPRISING A REVERSIBLE FLUID MOTOR INCLUDING A CYLINDER ELEMENT AND A PISTON ELEMENT, ONE OF SAID ELEMENTS BEING SECURED TO THE REAR OF SAID DIE SUPPORT PLATE AND THE OTHER ELEMENT, HAVING AT LEAST ONE ROD CONNECTED THEREWITH AND SLIDABLE THROUGH SAID DIE SUPPORT PLATE, AN EJECTOR PLATE DISPOSED FORWARDLY OF SAID DIE SUPPORT PLATE FOR RECIPROCATION RELATIVE TO
Claim 2
Dependent Claim
113 words
AN EJECTOR MECHANISM FOR A PLASTIC INJECTION MOLDING MACHINE OR THE LIKE HAVING A PLATE SUPPORTING A FISRT DIE HALF FOR MOVEMENT FORWARDLY INTO ENGAGEMENT WITH A FIXED SECOND DIE HALF TO DEFINE A CAVITY THEREWITH AND REARWARDLY TO CARRY A PART MOLDED IN THE CAVITY AWAY FROM THE FIXED DIE HALF, SAID MECHANISM COMPRISING A REVERSIBLE FLUID MOTOR INCLUDING A CYLINDER ELEMENT AND A PISTON ELEMENT, ONE OF SAID ELEMENTS BEING SECURED TO THE REAR OF SAID DIE SUPPORT PLATE AND THE OTHER ELEMENT, HAVING AT LEAST ONE ROD CONNECTED THEREWITH AND SLIDABLE THROUGH SAID DIE SUPPORT PLATE, AN EJECTOR PLATE DISPOSED FORWARDLY OF SAID DIE SUPPORT PLATE FOR RECIPROCATION RELATIVE TO
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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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |