Patent US3122665A successfully refreshed from Google Patents.
US3122665A
Expired / Lapsed
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Position control transducer and system
Assignee: Bendix Corp
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Filing: 1961-09-25
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Granted: 1964-02-25
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Knight V Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A POSITION TRANSDUCER, COMPRISING: AN ELONGATED MEMBER FORMED OF A MAGNETOSTRICTIVE MATERIAL SUPPORTED IN A TAUT MANNER BETWEEN TWO TERMINATIONS; A FIRST, GENERATOR COIL WRAPPED ABOUT SAID MEMBER ADJACENT TO ONE OF ITS TERMINATIONS; A VOLTAGE CONTROLLED VARIABLE FREQUENCY, SINUSOIDAL ELECTRICAL GENERATOR CONNECTED TO SAID COIL, WHEREBY SAID ELECTRICAL SIGNALS CAUSE VARIATIONS IN THE MAGNETIC FIELD OF SAID COIL AND INDUCE SINUSOIDALLY VARYING LENGTH VARIATIONS IN SAID MEMBER; A FIRST PICKUP COIL WRAPPED ABOUT SAID MEMBER ADJACENT TO THE SECOND OF ITS TERMINATIONS AND OPERATIVE TO GENERATE AN ELECTRICAL SIGNAL PROPORTIONAL TO THE CHANGES IN THE LENGTH OF SAID MEMBER AT THE POINT OF DISPOSITION OF SAID FIRST PICKUP AT ANY PARTICULAR INSTANCE; ELECTRICAL CIRCUITRY MEANS CONNECTING SAID FIRST PICKUP COIL AND SAID VOLTAGE CONTROLLED GENERATOR IN SUCH A MANNER AS TO CAUSE THE SIGNALS FROM SAID FIRST PICKUP TO VARY THE FREQUENCY OF THE GENERATOR SO AS TO MAINTAIN A STANDING WAVE ALONG SAID MEMBER; AND A SECOND PICKUP COIL WRAPPED ABOUT SAID MEMBER AND MOVABLE ALONG ITS LENGTH, OPERATIVE TO GENERATE AN ELECTRICAL SIGNAL PROPORTIONAL TO THE CHANGES IN THE LENGTH OF SAID MEMBER AT THE POINT OF DISPOSITION OF SAID SECOND PICKUP AT ANY PARTICULAR INSTANT.
Claim 2
Dependent Claim
199 words
A POSITION TRANSDUCER, COMPRISING: AN ELONGATED MEMBER FORMED OF A MAGNETOSTRICTIVE MATERIAL SUPPORTED IN A TAUT MANNER BETWEEN TWO TERMINATIONS; A FIRST, GENERATOR COIL WRAPPED ABOUT SAID MEMBER ADJACENT TO ONE OF ITS TERMINATIONS; A VOLTAGE CONTROLLED VARIABLE FREQUENCY, SINUSOIDAL ELECTRICAL GENERATOR CONNECTED TO SAID COIL, WHEREBY SAID ELECTRICAL SIGNALS CAUSE VARIATIONS IN THE MAGNETIC FIELD OF SAID COIL AND INDUCE SINUSOIDALLY VARYING LENGTH VARIATIONS IN SAID MEMBER; A FIRST PICKUP COIL WRAPPED ABOUT SAID MEMBER ADJACENT TO THE SECOND OF ITS TERMINATIONS AND OPERATIVE TO GENERATE AN ELECTRICAL SIGNAL PROPORTIONAL TO THE CHANGES IN THE LENGTH OF SAID MEMBER AT THE POINT OF DISPOSITION OF SAID FIRST PICKUP AT ANY PARTICULAR INSTANCE; ELECTRICAL CIRCUITRY MEANS CONNECTING SAID FIRST PICKUP COIL AND SAID VOLTAGE CONTROLLED GENERATOR IN SUCH A MANNER AS TO CAUSE THE SIGNALS FROM SAID FIRST PICKUP TO VARY THE FREQUENCY OF THE GENERATOR SO AS TO MAINTAIN A STANDING WAVE ALONG SAID MEMBER; AND A SECOND PICKUP COIL WRAPPED ABOUT SAID MEMBER AND MOVABLE ALONG ITS LENGTH, OPERATIVE TO GENERATE AN ELECTRICAL SIGNAL PROPORTIONAL TO THE CHANGES IN THE LENGTH OF SAID MEMBER AT THE POINT OF DISPOSITION OF SAID SECOND PICKUP AT ANY PARTICULAR INSTANT.
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |