Position sensing and control apparatus
Abstract
Abstract THE FOLLOWING SPECIFICATION DISCLOSES APPARATUS FOR ACCURATELY POSITIONING A MEMBER AT ANY ONE OF A PLURALITY OF DISCRETE MAJOR LOCATIONS AS WELL AS A PLURALITY OF MINOR LOCATIONS ASSOCIATED WITH EACH OF THE MAJOR LOCATIONS. THE APPARATUS COMPRISES A STATIONARY DIFFERENTIAL TRANSFORMER, A POSITION FEEDBACK TRANSDUCER ROD WHICH CONSTITUTES THE CORE OF THE DIFFERENTIAL TRANSFORMER, AN ERROR SIGNAL GENERATING CIRCUIT RESPONSIVE TO THE OUTPUT OF THE DIFFERENTIAL TRANSFORMER AND A SERVO POSITIONING MECHANISM FOR MAINTAINING THE ERROR SIGNAL AT NULL. THE FEEDBACK TRANSDUCER ROD COMPRISES A NON-MAGNETIC ROD HAVING A PLURALITY OF TRANSVERSE GROOVES MACHINED THEREIN AT POINTS CORRESPONDING TO THE MAJOR LOCATIONS, THESE GROOVES BEING PLATED WITH A MAGNETIC MATERIAL. THE ERROR SIGNAL GENERATING MEANS IS ADAPTED TO SELECTIVELY GENERATE A BOGUS ERROR SIGNAL TO CAUSE THE SERVO POSITIONING MECHANISM TO SHIFT THE MEMBER AN AMOUNT PROPORTIONAL TO THE SENSE AND MAGNITUDE OF THE BOGUS ERROR SIGNAL.
Inventors
- 👤 Lloyd C Goss
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |