Patent US2897411A successfully refreshed from Google Patents.
US3075466A
Expired / Lapsed
US
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Electric motor control system
Assignee: Automation Products Inc
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Filing: 1961-10-17
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Granted: 1963-01-29
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Expires: 1981-10-17
Abstract
No abstract record available.
Inventors
- 👤 Bobby G Agnew
- 👤 William B Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
H; H02; H02P; H02P29/00; H02P29/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A MOTOR CONTROL SYSTEM FOR THE CONTROL OF AN ELECTRIC MOTOR OPERATIVELY CONNECTED TO A WELL PUMP HAVING A STATIONARY MEMBER AND A RECIPROCATING MEMBER ADAPTED TO PUMP LIQUID FROM A WELL, COMPRISING: FIRST CONTROL MEANS FOR CONNECTION TO THE PUMP, FOR PRODUCING A PUMP POSITION INDICATION AT A PREDETERMINED POSITION OF THE RECIPROCATING MEMBER DURING THE DOWNSTROKE THEREOF; SECOND MEANS OPERATIVELY CONNECTED TO SAID FIRST MEANS, AND FOR CONNECTION IN CIRCUIT RELATIONSHIP WITH THE MOTOR, RESPONSIVE TO A PUMP POSITION INDICATION OF SAID FIRST MEANS TO DISCONNECT THE MOTOR FROM ITS ELECTRICAL POWER SOURCE WHENEVER THE CURRENT DRAWN BY THE MOTOR IS LESS THAN A PREDETERMINED CURRENT WHEN THE RECIPROCATING MEMBER IS AT SAID PREDETERMINED POSITION OF ITS OPERATING CYCLE; AND THIRD MEANS ELECTRICALLY COUPLED TO SAID SECOND MEANS RESPONSIVE TO DISCONNECTION OF THE MOTOR FROM ITS ELECTRICAL POWER SOURCE BY SAID SECOND MEANS TO RECONNECT THE MOTOR TO ITS ELECTRICAL POWER SOURCE A PREDETERMINED TIME INTERVAL AFTER THE MOTOR HAS BEEN DISCONNECTED FROM ITS ELECTRICAL POWER SOURCE.
Claim 2
Dependent Claim
169 words
A MOTOR CONTROL SYSTEM FOR THE CONTROL OF AN ELECTRIC MOTOR OPERATIVELY CONNECTED TO A WELL PUMP HAVING A STATIONARY MEMBER AND A RECIPROCATING MEMBER ADAPTED TO PUMP LIQUID FROM A WELL, COMPRISING: FIRST CONTROL MEANS FOR CONNECTION TO THE PUMP, FOR PRODUCING A PUMP POSITION INDICATION AT A PREDETERMINED POSITION OF THE RECIPROCATING MEMBER DURING THE DOWNSTROKE THEREOF; SECOND MEANS OPERATIVELY CONNECTED TO SAID FIRST MEANS, AND FOR CONNECTION IN CIRCUIT RELATIONSHIP WITH THE MOTOR, RESPONSIVE TO A PUMP POSITION INDICATION OF SAID FIRST MEANS TO DISCONNECT THE MOTOR FROM ITS ELECTRICAL POWER SOURCE WHENEVER THE CURRENT DRAWN BY THE MOTOR IS LESS THAN A PREDETERMINED CURRENT WHEN THE RECIPROCATING MEMBER IS AT SAID PREDETERMINED POSITION OF ITS OPERATING CYCLE; AND THIRD MEANS ELECTRICALLY COUPLED TO SAID SECOND MEANS RESPONSIVE TO DISCONNECTION OF THE MOTOR FROM ITS ELECTRICAL POWER SOURCE BY SAID SECOND MEANS TO RECONNECT THE MOTOR TO ITS ELECTRICAL POWER SOURCE A PREDETERMINED TIME INTERVAL AFTER THE MOTOR HAS BEEN DISCONNECTED FROM ITS ELECTRICAL POWER SOURCE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |