US3363446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for calibration of a locomotive speed recorder
Assignee: JOHN M KALEY
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Filing: 1965-10-22
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Granted: 1968-01-16
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Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 John M Kaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:56
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/021
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
152 words
A CONTROL SYSTEM FOR TESTING THE CALIBRATION OF THE SPEED RECORDER OF A RAILROAD LOCOMOTIVE WHICH COMPRISES: (A) A VARIABLE SPEED MOTOR, (B) AN ADJUSTABLE ELEMENT WHICH IS ADJUSTABLE TO VARY THE SPEED OF THE ROTOR OF SAID MOTOR, (C) A GENERATOR WHICH HAS THE ROTOR THEREOF CONNECTED TO AND DRIVEN BY THE ROTOR OF SAID MOTOR, (D) A MULTI-POSITION SELECTOR SWITCH AND A PLURALITY OF RESISTORS ASSOCIATED THEREWITH CONNECTED IN SERIES WITH THE OUTPUT OF SAID GENERATOR, (E) AN ELECTRICALLY-OPERATED SPEED METER, (F) SAID ROTOR OF SAID MOTOR SIMULTANEOUSLY DRIVING THE FREE END OF THE FLEXIBLE DRIVE CABLE OF SAID SPEED RECORDER AND SAID ROTOR OF SAID GENERATOR, (G) SAID GENERATOR SUPPLYING CURRENT FOR SAID SPEED METER WHICH IS PROPORTIONAL TO THE SPEED OF ROTATION OF SAID ROTOR OF SAID GENERATOR, (H) SAID MULTI-POSITION SELECTOR SWITCH AND SAID PLURALITY OF RESISTORS ASSOCIATED THEREWITH LIMITING THE CURRENT FLOWING THROUGH SAID SPEED METER,
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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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |