Patent US3296941A successfully refreshed from Google Patents.
US3296941A
Expired / Lapsed
US
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Logic control system
Assignee: Beckman Coulter Inc
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Filing: 1965-02-15
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Granted: 1967-01-10
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Rochte Jerry Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:43
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/43; G05B19/44; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87233; Y10T137/87241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
IN A CONTROL SYSTEM HAVING A LOGIC OUTPUT CONSISTENT WITH THE LOGIC INPUT, THE COMBINATION OF: A POWER UNIT COMPRISING A CYLINDER WITH A PISTON MOVABLE BETWEEN SET AND RESET POSITIONS AND HAVING A PRESSURE INLET AT EACH END FOR MOVING SAID PISTON; A SET EXHAUST VALVE IN SAID POWER UNIT COMMUNICATING WITH ONE OF SAID INLETS AND ENGAGEABLE BY SAID PISTON WHEN IN SAID SET POSITION TO OPEN SAID VALVE; A RESET EXHAUST VALVE IN SAID POWER UNIT COMMUNICATING WITH THE OTHER OF SAID INLETS AND ENGAGEABLE BY SAID PISTON WHEN IN SAID RESET POSITION TO OPEN SAID VALVE; A FOUR-WAY VALVE FOR SELECTIVELY CONNECTING A PRESSURE SOURCE TO ONE OF SAID POWER UNIT INLETS AND CONNECTING THE OTHER INLET TO AN EXHAUST; A PNEUMATICALLY CONTROLLED SET-RESET FLIP-FLOP COMPRISING A BISTABLE DEVICE HAVING FIRST AND SECOND STABLE STATES FOR CONTROLLING SAID FOUR-WAY VALVE; SET AND RESET CONTROL VALVES FOR SAID FLIP-FLOP, WITH EACH OF SAID CONTROL VALVES SELECTIVELY CONNECTING SAID FLIP/ FLOP TO AN EXHAUST, WITH SAID FLIP-FLOP GOING TO SAID FIRST STABLE STATE WHEN SAID SET CONTROL VALVE IS OPENED AND GOING TO SAID SECOND STABLE STATE WHEN SAID RESET CONTROL VALVE IS OPENED; AND
Claim 2
Dependent Claim
197 words
IN A CONTROL SYSTEM HAVING A LOGIC OUTPUT CONSISTENT WITH THE LOGIC INPUT, THE COMBINATION OF: A POWER UNIT COMPRISING A CYLINDER WITH A PISTON MOVABLE BETWEEN SET AND RESET POSITIONS AND HAVING A PRESSURE INLET AT EACH END FOR MOVING SAID PISTON; A SET EXHAUST VALVE IN SAID POWER UNIT COMMUNICATING WITH ONE OF SAID INLETS AND ENGAGEABLE BY SAID PISTON WHEN IN SAID SET POSITION TO OPEN SAID VALVE; A RESET EXHAUST VALVE IN SAID POWER UNIT COMMUNICATING WITH THE OTHER OF SAID INLETS AND ENGAGEABLE BY SAID PISTON WHEN IN SAID RESET POSITION TO OPEN SAID VALVE; A FOUR-WAY VALVE FOR SELECTIVELY CONNECTING A PRESSURE SOURCE TO ONE OF SAID POWER UNIT INLETS AND CONNECTING THE OTHER INLET TO AN EXHAUST; A PNEUMATICALLY CONTROLLED SET-RESET FLIP-FLOP COMPRISING A BISTABLE DEVICE HAVING FIRST AND SECOND STABLE STATES FOR CONTROLLING SAID FOUR-WAY VALVE; SET AND RESET CONTROL VALVES FOR SAID FLIP-FLOP, WITH EACH OF SAID CONTROL VALVES SELECTIVELY CONNECTING SAID FLIP/ FLOP TO AN EXHAUST, WITH SAID FLIP-FLOP GOING TO SAID FIRST STABLE STATE WHEN SAID SET CONTROL VALVE IS OPENED AND GOING TO SAID SECOND STABLE STATE WHEN SAID RESET CONTROL VALVE IS OPENED; AND
References Cited (Backward Citations)
US3156157A
Cited
US3174409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |