US3089293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic control mechanism for roll grinder
Assignee: Milacron Inc
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Filing: 1961-10-05
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Granted: 1963-05-14
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Expires: 1981-10-05
Abstract
No abstract record available.
Inventors
- 👤 Walter A Hoier
- 👤 George W Marshall
- 👤 Milton V Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:41
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/0405; B; B21; B21B; B21B28/00; B21B28/02; B24; B24B; B24B49/00; B24B49/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A MACHINE FOR GRINDING THE PERIPHERAL FACE OF A CYLINDRICAL WORKPIECE COMPRISING IN COMBINATION: (A) MEANS FOR SUPPORTING THE WORKPIECE TO BE GROUND FOR ROTATION ABOUT ITS LONGITUDINAL AXIS, (B) A GRINDING WHEEL, (C) TRAVERSING MEANS FOR EFFECTING LONGITUDINAL MOVEMENT OF THE GRINDING WHEEL RELATIVE TO THE WORKPIECE, (D) A DRIVE MOTOR FOR THE GRINDING WHEEL, (E) MEANS FOR DISABLING SAID TRAVERSING MEANS IN RESPONSE TO A REDUCTION IN THE TORQUE ON SAID DRIVE MOTOR BELOW A PREDETERMINED VALUE, AND (F) DELAY MEANS FOR INHIBITING THE OPERATION OF SAID DISABLING MEANS FOR A PRESELECTED TIME INTERVAL AFTER THE TORQUE HAS FALLEN BELOW SAID VALVE AND FOR PREVENTING SAID DISABLING MEANS FROM BECOMING EFFECTIVE IF THE TORQUE IS RESTORED TO SAID VALVE WITHIN SAID TIME INTERVAL.
Claim 2
Dependent Claim
125 words
A MACHINE FOR GRINDING THE PERIPHERAL FACE OF A CYLINDRICAL WORKPIECE COMPRISING IN COMBINATION: (A) MEANS FOR SUPPORTING THE WORKPIECE TO BE GROUND FOR ROTATION ABOUT ITS LONGITUDINAL AXIS, (B) A GRINDING WHEEL, (C) TRAVERSING MEANS FOR EFFECTING LONGITUDINAL MOVEMENT OF THE GRINDING WHEEL RELATIVE TO THE WORKPIECE, (D) A DRIVE MOTOR FOR THE GRINDING WHEEL, (E) MEANS FOR DISABLING SAID TRAVERSING MEANS IN RESPONSE TO A REDUCTION IN THE TORQUE ON SAID DRIVE MOTOR BELOW A PREDETERMINED VALUE, AND (F) DELAY MEANS FOR INHIBITING THE OPERATION OF SAID DISABLING MEANS FOR A PRESELECTED TIME INTERVAL AFTER THE TORQUE HAS FALLEN BELOW SAID VALVE AND FOR PREVENTING SAID DISABLING MEANS FROM BECOMING EFFECTIVE IF THE TORQUE IS RESTORED TO SAID VALVE WITHIN SAID TIME INTERVAL.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |