Patent US3330003A successfully refreshed from Google Patents.
US3330003A
Expired / Lapsed
US
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Pressure and injection moulding machine
Assignee: Buehler AG
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Filing: 1964-09-28
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Granted: 1967-07-11
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Eggenberger Ulrich
- 👤 Schwertfeger Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:59
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/32; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/53; B29C45/531; B29C45/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PRESSURE INJECTION MOULDING MACHINE COMPRISING A MOULD, A PISTON OPERABLE TO FILL MOULD WITH MATERIAL, MEANS CONTROLLING SAID PISTON IN ACCORDANCE WITH A PRESET OPERATION DIAGRAM SO THAT MOVEMENT OF SAID PISTON OCCURS DURING A FIRST SLOW INJECTION PERIOD AND A SECOND MOULD FILLING PERIOD, ADJUSTABLE CONTROL ELEMENTS FOR PRESETTING SAID OPERATION DIAGRAM, AND TIME MEASURING MEANS OPERATIVELY ASSOCIATED WITH SAID PISTON, AND CONTROLLED THEREBY DURING EACH INJECTION STROKE, FOR MEASURING THE TIME DURATION OF PISTON MOVEMENT DURING EACH INJECTION STROKE.
Claim 2
Dependent Claim
82 words
A PRESSURE INJECTION MOULDING MACHINE COMPRISING A MOULD, A PISTON OPERABLE TO FILL MOULD WITH MATERIAL, MEANS CONTROLLING SAID PISTON IN ACCORDANCE WITH A PRESET OPERATION DIAGRAM SO THAT MOVEMENT OF SAID PISTON OCCURS DURING A FIRST SLOW INJECTION PERIOD AND A SECOND MOULD FILLING PERIOD, ADJUSTABLE CONTROL ELEMENTS FOR PRESETTING SAID OPERATION DIAGRAM, AND TIME MEASURING MEANS OPERATIVELY ASSOCIATED WITH SAID PISTON, AND CONTROLLED THEREBY DURING EACH INJECTION STROKE, FOR MEASURING THE TIME DURATION OF PISTON MOVEMENT DURING EACH INJECTION STROKE.
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |