US3204294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection molding machine
Assignee: Individual
•
Filing: 1963-07-31
•
Granted: 1965-09-07
•
Expires: 1983-07-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Brochetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:43
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN AN INJECTION MOLDING MACHINE HAVING A ROTATABLE AND AXIALLY MOVABLE CONVEYOR SCREW, A PISTON RIGIDLY CONNECTED WITH THE REAR END OF SAID SCREW, A STATIONARY CYLINDER CONTAINING THE PISTON AND HAVING A FRONT END WALL PROVIDED WITH A FLUID PASSAGE HAVING AN OUTLET INSIDE THE CYLINDER IN FRONT OF THE PISTON AND ALSO HAVING AN INLET, MEANS OPERATIVE AFTER THE ROTATING SCREW HAS MOVED THE PISTON TOWARD THE BACK OF THE CYLINDER TO DELIVER FLUID UNDER PRESSURE TO THE CYLINDER BEHIND THE ROTATING PISTON FOR DRIVING IT FORWARD AGAINST THE FRONT END WALL OF THE CYLINDER, MEANS FOR DIVERTING SOME OF SAID PRESSURE FLUID
Claim 2
Dependent Claim
105 words
IN AN INJECTION MOLDING MACHINE HAVING A ROTATABLE AND AXIALLY MOVABLE CONVEYOR SCREW, A PISTON RIGIDLY CONNECTED WITH THE REAR END OF SAID SCREW, A STATIONARY CYLINDER CONTAINING THE PISTON AND HAVING A FRONT END WALL PROVIDED WITH A FLUID PASSAGE HAVING AN OUTLET INSIDE THE CYLINDER IN FRONT OF THE PISTON AND ALSO HAVING AN INLET, MEANS OPERATIVE AFTER THE ROTATING SCREW HAS MOVED THE PISTON TOWARD THE BACK OF THE CYLINDER TO DELIVER FLUID UNDER PRESSURE TO THE CYLINDER BEHIND THE ROTATING PISTON FOR DRIVING IT FORWARD AGAINST THE FRONT END WALL OF THE CYLINDER, MEANS FOR DIVERTING SOME OF SAID PRESSURE FLUID
References Cited (Backward Citations)
US2734226A
Cited
US966601A
Cited
US2293334A
Cited
US2988779A
Cited
US3032819A
Cited
US3133316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |