Patent US3310840A successfully refreshed from Google Patents.
US3310840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically actuated clamping mechanism for the mold in an injection molding apparatus
Assignee: Individual
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Filing: 1964-03-31
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Granted: 1967-03-28
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 Aoki Eizo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:00
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/64; B29C45/67; B29C45/6707; B29C45/6714; B29C45/6721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A HYDRAULICALLY ACTUATED CLAMPING MECHANISM FOR THE MOLD IN AN INJECTION MOLDING APPARATUS COMPRISING A STRUCTURE HAVING A HYDRAULIC PRESS CHAMBER PARTITIONED BY A DIAPHRAGM, A RECEIVER PISTON SUPPORTED BY AN ELASTIC DISK SO AS TO CLOSELY CONTACT WITH SAID DIAPHRAGM AT ITS REAR END, A ROD MOVABLY AND INSERTEDLY INTERPOSING BETWEEN THE FRONT FREE END AND THE RECEIVER PISTON AND A PRESSURE RECEIVING SURFACE OF A MOVABLE PART OF A MOLD, A CYLINDER INTERCONNECTED TO THE BACK SIDE OF THE STRUCTURE, A CONNECTING ROD CONNECTING A PISTON CONTAINED IN THE CYLINDER WITH THE DISPHRAGM AND A FLUID TRANSMITTING PIPE CONNECTED TO THE HYDRAULIC PRESS CHAMBER AND ALSO PROVIDED WITH A BRANCH PIPE DIVERGING FROM SAID FLUID TRANSMITTING PIPE.
Claim 2
Dependent Claim
119 words
A HYDRAULICALLY ACTUATED CLAMPING MECHANISM FOR THE MOLD IN AN INJECTION MOLDING APPARATUS COMPRISING A STRUCTURE HAVING A HYDRAULIC PRESS CHAMBER PARTITIONED BY A DIAPHRAGM, A RECEIVER PISTON SUPPORTED BY AN ELASTIC DISK SO AS TO CLOSELY CONTACT WITH SAID DIAPHRAGM AT ITS REAR END, A ROD MOVABLY AND INSERTEDLY INTERPOSING BETWEEN THE FRONT FREE END AND THE RECEIVER PISTON AND A PRESSURE RECEIVING SURFACE OF A MOVABLE PART OF A MOLD, A CYLINDER INTERCONNECTED TO THE BACK SIDE OF THE STRUCTURE, A CONNECTING ROD CONNECTING A PISTON CONTAINED IN THE CYLINDER WITH THE DISPHRAGM AND A FLUID TRANSMITTING PIPE CONNECTED TO THE HYDRAULIC PRESS CHAMBER AND ALSO PROVIDED WITH A BRANCH PIPE DIVERGING FROM SAID FLUID TRANSMITTING PIPE.
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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |