US3142018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fine and coarse positional servo system
Assignee: Seneca Falls Machine Co
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Filing: 1961-01-24
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Granted: 1964-07-21
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Expires: 1981-01-24
Abstract
No abstract record available.
Inventors
- 👤 Robert H Eisengrein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:31
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1436; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/60; B23Q1/601; B23Q5/00; B23Q5/22; B23Q5/52; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B19/35; G05B19/351; G05B19/39; B23Q2705/00; B23Q2705/24; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37103; G05B2219/37262; G05B2219/37462; G05B2219/41; G05B2219/41081; G05B2219/41105; G05B2219/42; G05B2219/42199
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A SYSTEM FOR CONTROLLING THE POSITION OF A CARRIAGE MOVABLE THROUGH A PREDETERMINED PATH COMPRISING, A POSITION-DEFINING STOP ADJACENT SAID PATH, DRIVE MEANS FOR MOVING SAID CARRIAGE THROUGH SAID PATH, A COARSE CONTROL FOR SAID DRIVE MEANS INCLUDING MEANS GENERATING A FIRST SIGNAL CORRESPONDING TO THE POSITION OF SAID CARRIAGE ALONG SAID PATH, MEANS INDEPENDENT OF SAID STOP GENERATING A REFERENCE SIGNAL CORRESPONDING TO THE POSITION DEFINED BY SAID STOP, AND MEANS COMPARING SAID FIRST SIGNAL AND SAID REFERENCE SIGNAL AND GENERATING A COARSE OUTPUT CONTROL SIGNAL CORRESPONDING TO THE DISPLACEMENT OF SAID CARRIAGE FROM SAID STOP-DEFINED POSITION, A FINE CONTROL FOR SAID DRIVE MEANS INCLUDING A STYLUS CARRIED BY SAID CARRIAGE FOR MOVEMENT THEREWITH THROUGH SAID PATH INTO ENGAGEMENT WITH SAID STOP, SAID STYLUS BEING MOVABLE BY SAID STOP RELATIVE TO SAID CARRIAGE INTO A PREDETERMINED REFERENCE POSITION CORRESPONDING TO THE POSITION DEFINED BY SAID STOP, AND MEANS GENERATING A FINE OUTPUT CONTROL SIGNAL CORRESPONDING TO THE DISPLACEMENT OF SAID STYLUS FROM SAID REFERENCE POSITION, OUTPUT SIGNAL RESPONSIVE CONTROL MEANS FOR SAID CARRIAGE DRIVE MEANS, AND MEANS AUTOMATICALLY OPERABLE TO SWITCH SAID CARRIAGE DRIVE CONTROL MEANS FOR SAID COARSE CONTROL TO SAID FINE CONTROL UPON ARRIVAL OF SAID CARRIAGE AT SAID STOP-DEFINED POSITION AS DETERMINED BY SAID COARSE CONTROL.
Claim 2
Independent Claim
210 words
A SYSTEM FOR CONTROLLING THE POSITION OF A CARRIAGE MOVABLE THROUGH A PREDETERMINED PATH COMPRISING, A POSITION-DEFINING STOP ADJACENT SAID PATH, DRIVE MEANS FOR MOVING SAID CARRIAGE THROUGH SAID PATH, A COARSE CONTROL FOR SAID DRIVE MEANS INCLUDING MEANS GENERATING A FIRST SIGNAL CORRESPONDING TO THE POSITION OF SAID CARRIAGE ALONG SAID PATH, MEANS INDEPENDENT OF SAID STOP GENERATING A REFERENCE SIGNAL CORRESPONDING TO THE POSITION DEFINED BY SAID STOP, AND MEANS COMPARING SAID FIRST SIGNAL AND SAID REFERENCE SIGNAL AND GENERATING A COARSE OUTPUT CONTROL SIGNAL CORRESPONDING TO THE DISPLACEMENT OF SAID CARRIAGE FROM SAID STOP-DEFINED POSITION, A FINE CONTROL FOR SAID DRIVE MEANS INCLUDING A STYLUS CARRIED BY SAID CARRIAGE FOR MOVEMENT THEREWITH THROUGH SAID PATH INTO ENGAGEMENT WITH SAID STOP, SAID STYLUS BEING MOVABLE BY SAID STOP RELATIVE TO SAID CARRIAGE INTO A PREDETERMINED REFERENCE POSITION CORRESPONDING TO THE POSITION DEFINED BY SAID STOP, AND MEANS GENERATING A FINE OUTPUT CONTROL SIGNAL CORRESPONDING TO THE DISPLACEMENT OF SAID STYLUS FROM SAID REFERENCE POSITION, OUTPUT SIGNAL RESPONSIVE CONTROL MEANS FOR SAID CARRIAGE DRIVE MEANS, AND MEANS AUTOMATICALLY OPERABLE TO SWITCH SAID CARRIAGE DRIVE CONTROL MEANS FOR SAID COARSE CONTROL TO SAID FINE CONTROL UPON ARRIVAL OF SAID CARRIAGE AT SAID STOP-DEFINED POSITION AS DETERMINED BY SAID COARSE CONTROL.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |