Patent US3220312A successfully refreshed from Google Patents.
US3220312A
Expired / Lapsed
US
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Machine tool hydraulic system
Assignee: Milacron Inc
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Filing: 1963-08-28
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Granted: 1965-11-30
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Expires: 1983-08-28
Abstract
No abstract record available.
Inventors
- 👤 Albert H Dall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:55
CPC Classifications
B; B23; B23Q; B23Q5/00; B23Q5/02; B23Q5/04; B23Q5/06; B23Q1/00; B23Q1/0009; B23Q1/0018; B23Q15/00; F; F16; F16H; F16H61/00; F16H61/38; F16H61/40; F16H61/4183; F16H61/44; F16H61/444; Y; Y10; Y10T; Y10T408/00; Y10T408/65; Y10T408/675; Y10T409/00; Y10T409/30; Y10T409/309184; Y10T409/30924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A MACHINE TOOL HAVING A ROTARY CUTTING TOOL, (A) A HYDAULIC DRIVE MOTOR TO ROTATE THE TOOL, (B) A HYDRAULIC PUMP TO SUPPLY FLUID UNDER PRESSURE TO THE MOTOR FOR OPERATION THEREOF, (C) AN ACCUMULATOR NORMALLY ISOLATED FROM THE MOTOR, (D) AND MEANS RESPONSIVE TO A SUDDEN INCREASE IN LOAD ON THE CUTTING TOOL TO CONNECT SAID ACCUMULATOR MOMENTARILY TO THE MOTOR.
Claim 2
Dependent Claim
63 words
IN A MACHINE TOOL HAVING A ROTARY CUTTING TOOL, (A) A HYDAULIC DRIVE MOTOR TO ROTATE THE TOOL, (B) A HYDRAULIC PUMP TO SUPPLY FLUID UNDER PRESSURE TO THE MOTOR FOR OPERATION THEREOF, (C) AN ACCUMULATOR NORMALLY ISOLATED FROM THE MOTOR, (D) AND MEANS RESPONSIVE TO A SUDDEN INCREASE IN LOAD ON THE CUTTING TOOL TO CONNECT SAID ACCUMULATOR MOMENTARILY TO THE MOTOR.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |