Patent US3426273A successfully refreshed from Google Patents.
US3426273A
Expired / Lapsed
US
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Signal generator for producing a predetermined number of electrical pulses
Assignee: Phillips Petroleum Co
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Filing: 1966-09-15
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Granted: 1969-02-04
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Expires: 1986-09-15
Abstract
No abstract record available.
Inventors
- 👤 Louis E Kuntz
- 👤 William C Hahn
- 👤 Merle C Rhoades
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:56
CPC Classifications
G; G01; G01P; G01P21/00; G01P21/02; G01F; G01F25/00; G01F25/10; G06; G06M; G06M3/00; G06M3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN ELECTRICAL TESTING APPARATUS COMPRISING A MOTOR HAVING A DRIVE SHAFT, A MAGNET, MEANS CONNECTING SAID MAGNET TO SAID DRIVE SHAFT SO AS TO BE ROTATED THEREBY, A COIL POSITIONED ADJACENT SAID MAGNET SO THAT ROTATION OF SAID MAGNET INDUCES AN ALTERNATING VOLTAGE ACROSS SAID COIL, OUTPUT CIRCUIT MEANS CONNECTED TO SAID COIL TO ESTABLISH AN ALTERNATING ELECTRICAL SIGNAL OF FREQUENCY WHICH IS PROPORTIONAL TO THE SPEED OF ROTATION OF SAID MOTOR, SWITCH MEANS IN SAID OUTPUT CIRCUIT MEANS AND COUNTER MEANS CONNECTED TO SAID DRIVE SHAFT AND TO SAID SWITCH MEANS SO AS TO OPEN SAID SWITCH MEANS WHEN SAID DRIVE SHAFT MAKES A PREDETERMINED NUMBER OF REVOLUTIONS.
Claim 2
Dependent Claim
109 words
AN ELECTRICAL TESTING APPARATUS COMPRISING A MOTOR HAVING A DRIVE SHAFT, A MAGNET, MEANS CONNECTING SAID MAGNET TO SAID DRIVE SHAFT SO AS TO BE ROTATED THEREBY, A COIL POSITIONED ADJACENT SAID MAGNET SO THAT ROTATION OF SAID MAGNET INDUCES AN ALTERNATING VOLTAGE ACROSS SAID COIL, OUTPUT CIRCUIT MEANS CONNECTED TO SAID COIL TO ESTABLISH AN ALTERNATING ELECTRICAL SIGNAL OF FREQUENCY WHICH IS PROPORTIONAL TO THE SPEED OF ROTATION OF SAID MOTOR, SWITCH MEANS IN SAID OUTPUT CIRCUIT MEANS AND COUNTER MEANS CONNECTED TO SAID DRIVE SHAFT AND TO SAID SWITCH MEANS SO AS TO OPEN SAID SWITCH MEANS WHEN SAID DRIVE SHAFT MAKES A PREDETERMINED NUMBER OF REVOLUTIONS.
References Cited (Backward Citations)
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US3327224A
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US3238764A
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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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |