Patent CA1017313A successfully refreshed from Google Patents.
Patent US3391425A successfully refreshed from Google Patents.
US3391425A
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Control for plunger in transfer moulding presses
Assignee: T H & J Daniels Ltd
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Filing: 1966-06-13
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Granted: 1968-07-09
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Gardner Herbert Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:14
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/02; B29C45/17; B29C45/46; B29C45/53; B29C45/531; B29C45/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
IN A TRANSFER MOULDING PRESS INCLUDING A TRANSFER POT AND AN HYDRAULICALLY OPERATED TRANSFER PLUNGER THE PROVISION OF CONTROL MEANS ADAPTED TO BE ACTUATED AUTOMATICALLY, SUBSEQUENTLY TO AN INITIAL MOVEMENT OF THE PLUNGER TO CONSOLIDATE MATERIAL PRESENT IN THE POT, TO CONTROL THE LENGTH OF THE ACTUAL TRANSFER STROKE OF THE TRANSFER PLUNGER COMPRISING AN ADJUSTABLE ELEMENT CAPABLE OF BEING PRE-SET TO PROVIDE FOR A PREDETERMINED LENGTH OF PLUNGER STROKE, MEANS ACTUATABLE AS A RESULT OF AN INCREASE IN HYDRAULIC PRESSURE DUE TO CONSOLIDATION OF MATERIAL IN THE TRANSFER POT, TO CAUSE SAID ELEMENT TO BE EFFECTIVELY COUPLED TO THE TRANSFER PLUNGER TO MOVE THEREWITH AND A CONTROL SWITCH ACTUATABLE BY SAID ELEMENT UPON COMPLETION OF THE PRE-SET STROKE TO CAUSE RETRACTION OF THE PLUNGER.
Claim 2
Dependent Claim
125 words
IN A TRANSFER MOULDING PRESS INCLUDING A TRANSFER POT AND AN HYDRAULICALLY OPERATED TRANSFER PLUNGER THE PROVISION OF CONTROL MEANS ADAPTED TO BE ACTUATED AUTOMATICALLY, SUBSEQUENTLY TO AN INITIAL MOVEMENT OF THE PLUNGER TO CONSOLIDATE MATERIAL PRESENT IN THE POT, TO CONTROL THE LENGTH OF THE ACTUAL TRANSFER STROKE OF THE TRANSFER PLUNGER COMPRISING AN ADJUSTABLE ELEMENT CAPABLE OF BEING PRE-SET TO PROVIDE FOR A PREDETERMINED LENGTH OF PLUNGER STROKE, MEANS ACTUATABLE AS A RESULT OF AN INCREASE IN HYDRAULIC PRESSURE DUE TO CONSOLIDATION OF MATERIAL IN THE TRANSFER POT, TO CAUSE SAID ELEMENT TO BE EFFECTIVELY COUPLED TO THE TRANSFER PLUNGER TO MOVE THEREWITH AND A CONTROL SWITCH ACTUATABLE BY SAID ELEMENT UPON COMPLETION OF THE PRE-SET STROKE TO CAUSE RETRACTION OF THE PLUNGER.
References Cited (Backward Citations)
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Cited
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US2786234A
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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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |