US3335525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic system for grinding machines
Assignee: Mid West Abrasive Co
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Filing: 1964-05-20
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Granted: 1967-08-15
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Expires: 1984-05-20
Abstract
No abstract record available.
Inventors
- 👤 Anthony A Muehling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:25
CPC Classifications
B; B24; B24B; B24B47/00; B24B47/02; B24B47/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A MACHINE FOR REMOVING METAL FROM A WORKPIECE COMPRISING A GRINDING WHEEL, MEANS FOR MOVING SAID GRINDING WHEEL IN OPPOSITE DIRECTIONS INCLUDING A REVERSIBLE FLUID MOTOR, A FIRST FLUID LINE LEADING TO ONE SIDE OF SAID MOTOR AND A SECOND FLUID LINE LEADING TO THE OPPOSITE SIDE THEREOF, MEANS FOR SUPPLYING FLUID UNDER PRESSURE TO SIDE MOTOR THROUGH BOTH SAID LINES, VALVES CONNECTED TO SAID LINES AND WHEN OPEN RELIEVING THE PRESSURE THEREIN, AND MEANS FOR MOVING ONE OF THE OTHER OF SAID VALVES TOWARD CLOSED POSITION.
Claim 2
Dependent Claim
87 words
A MACHINE FOR REMOVING METAL FROM A WORKPIECE COMPRISING A GRINDING WHEEL, MEANS FOR MOVING SAID GRINDING WHEEL IN OPPOSITE DIRECTIONS INCLUDING A REVERSIBLE FLUID MOTOR, A FIRST FLUID LINE LEADING TO ONE SIDE OF SAID MOTOR AND A SECOND FLUID LINE LEADING TO THE OPPOSITE SIDE THEREOF, MEANS FOR SUPPLYING FLUID UNDER PRESSURE TO SIDE MOTOR THROUGH BOTH SAID LINES, VALVES CONNECTED TO SAID LINES AND WHEN OPEN RELIEVING THE PRESSURE THEREIN, AND MEANS FOR MOVING ONE OF THE OTHER OF SAID VALVES TOWARD CLOSED POSITION.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |