US3340451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flux responsive reading system for a magnetically recorded digital programmed position servo
Assignee: Inductosyn Corp
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Filing: 1963-03-26
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Granted: 1967-09-05
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Expires: 1983-03-26
Abstract
No abstract record available.
Inventors
- 👤 Clair L Farrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/408; G05B19/19; G05B19/33; G05B19/35; G05B19/351; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/335; G05B2219/00; G05B2219/30; G05B2219/36; G05B2219/36368; G05B2219/36381
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A PROGRAM CONTROLLED POSITIONING SYSTEM FOR THE MOVABLE ELEMENT OF A MACHINE TOOL HAVING FIXED AND MOVABLE MEMBERS, SAID SYSTEM COMPRISING (1) A STATIONARY MAGNETIC FLUX DENSITY SENSITIVE READING HEAD FOR A MAGNETIC RECORD HAVING A DIGITAL SIGNAL REPRESENTING THE RELATIVE POSITIN OF SAID STATIONARY MEMBER AND SAID MOVABLE MEMBER, SAID MOVBLE MEMBER BEING FIXED TO SAID MOVABLE MACHINE ELEMENT, (2) SAID HEAD SUPPLYING AN OUTPUT OF SAID DIGITAL POSITIONAL SIGNALS, RESPONSIVE TO FLUX DENSITY, TO (3) A PHASE SENSITIVE DETECTOR HAVING A REFERENCE INPUT, (4) A DIGITAL-TO-ANALOG CONVERTER HAVING AN INPUT FROM SAID PHASE SENSITIVE DETECTOR AND SUPPLYING AS AN OUTPUT ANALOG SIGNALS OF THE SAME PHASE AS SAID DIGITAL SIGNAL, SAID ANALOG SIGNALS HAVING A TRIGONOMETRIC RELATION REPRESENTATIVE OF SAID DIGITAL, AND ANALOG SIGNALS BEING SUPPLIED TO (5) A POSITION MEASURING TRANSFORMER HAVING INPUT WINDINGS HAVING A GEOMETRICAL SPACING CORRESPONDING TO SAID TRIGONOMETRIC RELATION,
Claim 2
Dependent Claim
146 words
A PROGRAM CONTROLLED POSITIONING SYSTEM FOR THE MOVABLE ELEMENT OF A MACHINE TOOL HAVING FIXED AND MOVABLE MEMBERS, SAID SYSTEM COMPRISING (1) A STATIONARY MAGNETIC FLUX DENSITY SENSITIVE READING HEAD FOR A MAGNETIC RECORD HAVING A DIGITAL SIGNAL REPRESENTING THE RELATIVE POSITIN OF SAID STATIONARY MEMBER AND SAID MOVABLE MEMBER, SAID MOVBLE MEMBER BEING FIXED TO SAID MOVABLE MACHINE ELEMENT, (2) SAID HEAD SUPPLYING AN OUTPUT OF SAID DIGITAL POSITIONAL SIGNALS, RESPONSIVE TO FLUX DENSITY, TO (3) A PHASE SENSITIVE DETECTOR HAVING A REFERENCE INPUT, (4) A DIGITAL-TO-ANALOG CONVERTER HAVING AN INPUT FROM SAID PHASE SENSITIVE DETECTOR AND SUPPLYING AS AN OUTPUT ANALOG SIGNALS OF THE SAME PHASE AS SAID DIGITAL SIGNAL, SAID ANALOG SIGNALS HAVING A TRIGONOMETRIC RELATION REPRESENTATIVE OF SAID DIGITAL, AND ANALOG SIGNALS BEING SUPPLIED TO (5) A POSITION MEASURING TRANSFORMER HAVING INPUT WINDINGS HAVING A GEOMETRICAL SPACING CORRESPONDING TO SAID TRIGONOMETRIC RELATION,
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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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |