Patent US3300969A successfully refreshed from Google Patents.
US3300969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cavitation minimizer
Assignee: Bryant Grinder Corp
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Filing: 1965-07-06
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Granted: 1967-01-31
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Donald M Barden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:15
CPC Classifications
F; F15; F15B; F15B21/00; F15B21/04; F15B21/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A SYSTEM FOR CONTROLLING THE OPERATION OF A FLUID ACTUATED MOTOR COMPRISING; A FLUID ACTUATED MOTOR; A FLUID RESERVOIR; A VOLUMETRIC PUMP; A FLUID SUPPLY LINE AND A FLUID RETURN LINE CONNECTING SAID RESERVOIR, SAID PUMP AND SAID MOTOR; VALVE MEANS CONNECTED BETWEEN SAID MOTOR AND SAID PUMP AND RESERVOIR FOR CONTROLLING THE FLOW OF FLUID TO AND FROM SAID MOTOR; A FLUID CYLINDER CONNECTED BETWEEN SAID FLUID SUPPLY LINE AND SAID FLUID RETURN LINE, SAID FLUID CYLINDER INCLUDING; A CHAMBER; A FREE FLOATING SLIDABLY MOVABLE PISTON IN SAID CHAMBER; A PLURALITY OF PORT MEANS ON SAID CYLINDER CONNECTING SAID CHAMBER OF SAID CYLINDER AND SAID FLUID SUPPLY LINE AND SAID FLUID RETURN LINE, RESPECTIVELY; WHEREBY FLUID IN SAID CHAMBER ON ONE SIDE OF SAID PISTON IS FORCED INTO SAID FLUID SUPPLY LINE TO CONTROL CAVITATION DEFECTS WHEN SAID CONTROLLING VALVE MEANS PREVENTS FLOW OF FLUID TO SAID MOTOR.
Claim 2
Independent Claim
149 words
A SYSTEM FOR CONTROLLING THE OPERATION OF A FLUID ACTUATED MOTOR COMPRISING; A FLUID ACTUATED MOTOR; A FLUID RESERVOIR; A VOLUMETRIC PUMP; A FLUID SUPPLY LINE AND A FLUID RETURN LINE CONNECTING SAID RESERVOIR, SAID PUMP AND SAID MOTOR; VALVE MEANS CONNECTED BETWEEN SAID MOTOR AND SAID PUMP AND RESERVOIR FOR CONTROLLING THE FLOW OF FLUID TO AND FROM SAID MOTOR; A FLUID CYLINDER CONNECTED BETWEEN SAID FLUID SUPPLY LINE AND SAID FLUID RETURN LINE, SAID FLUID CYLINDER INCLUDING; A CHAMBER; A FREE FLOATING SLIDABLY MOVABLE PISTON IN SAID CHAMBER; A PLURALITY OF PORT MEANS ON SAID CYLINDER CONNECTING SAID CHAMBER OF SAID CYLINDER AND SAID FLUID SUPPLY LINE AND SAID FLUID RETURN LINE, RESPECTIVELY; WHEREBY FLUID IN SAID CHAMBER ON ONE SIDE OF SAID PISTON IS FORCED INTO SAID FLUID SUPPLY LINE TO CONTROL CAVITATION DEFECTS WHEN SAID CONTROLLING VALVE MEANS PREVENTS FLOW OF FLUID TO SAID 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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |