US3124841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding machine of thermoplastics
Assignee: —
•
Filing: —
•
Granted: 1964-03-17
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:44
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50; B29C45/5008; B29C2045/1784; B29C2045/1798; B29C45/76; B29C45/82; B29C2045/824
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
AN INJECTION MOLDING DEVICE CONSISTING OF A CYLINDER HAVING A DISCHARGE OPENING AT ONE END, MEANS FOR DELIVERING MATERIAL TO BE INJECTED CONNECTED TO SAID CYLINDER AT A SPACED LOCATION FROM THE DISCHARGE OPENING, A ROTATABLE AND RECIPROCABLE SCREW IN SAID CYLINDER HAVING MEANS THREON EFFECTIVE UPON ROTATION THEREOF TO FEED MATERIAL FROM SAID MEANS FOR DELIVERING MATERIAL TO BE INJECTED TO SAID DISCHARGE OPENING, VALVE MEANS FOR OPENING AND CLOSING SAID DISCHARGE OPENING, PRESSURE ACCUMULATOR MEANS OPPOSING MOVEMENT OF SAID SCREW IN A DIRECTION AWAY FROM SAID DISCHARGE SAID SCREW AND SAID PRESSURE ACCOMMODATION MEANS BEING DISPOSED SO THAT WHEN MATERIAL IS FED BY ROTATION OF SAID SCREW TOWARD SAID DISCHARGE TO CAUSE, WHEN SAID OPENING IS CLOSED, A BUILD UP OF PRESSURE AHEAD OF SAID SCREW WHICH URGES SAID SCREW IN A DIRECTION TO ACT ON SAID PRESSURE ACCUMULATOR MEANS,
Claim 2
Dependent Claim
142 words
AN INJECTION MOLDING DEVICE CONSISTING OF A CYLINDER HAVING A DISCHARGE OPENING AT ONE END, MEANS FOR DELIVERING MATERIAL TO BE INJECTED CONNECTED TO SAID CYLINDER AT A SPACED LOCATION FROM THE DISCHARGE OPENING, A ROTATABLE AND RECIPROCABLE SCREW IN SAID CYLINDER HAVING MEANS THREON EFFECTIVE UPON ROTATION THEREOF TO FEED MATERIAL FROM SAID MEANS FOR DELIVERING MATERIAL TO BE INJECTED TO SAID DISCHARGE OPENING, VALVE MEANS FOR OPENING AND CLOSING SAID DISCHARGE OPENING, PRESSURE ACCUMULATOR MEANS OPPOSING MOVEMENT OF SAID SCREW IN A DIRECTION AWAY FROM SAID DISCHARGE SAID SCREW AND SAID PRESSURE ACCOMMODATION MEANS BEING DISPOSED SO THAT WHEN MATERIAL IS FED BY ROTATION OF SAID SCREW TOWARD SAID DISCHARGE TO CAUSE, WHEN SAID OPENING IS CLOSED, A BUILD UP OF PRESSURE AHEAD OF SAID SCREW WHICH URGES SAID SCREW IN A DIRECTION TO ACT ON SAID PRESSURE ACCUMULATOR MEANS,
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) | 1967-03-17 | 1967-09-16 | 1968-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-17 | 1971-09-16 | 1972-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-17 | 1975-09-16 | 1976-03-17 | $7700.00 | Window Closed / Lapsed |