Patent US3358201A successfully refreshed from Google Patents.
US3358201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for compensating machine feed driveservomechanisms
Assignee: Giddings and Lewis LLC
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Filing: 1966-07-27
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Granted: 1967-12-12
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Expires: 1986-07-27
Abstract
No abstract record available.
Inventors
- 👤 Gordon H Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B2219/00; G05B2219/30; G05B2219/41; G05B2219/41065; G05B2219/50; G05B2219/50155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A CONTROL SYSTEM FOR POSITIONING A MOVABLE ELEMENT ALONG A PATH RESPONSIVE TO A CONTINUOUSLY SUPPLIED COMMAND SIGNAL, A SERVOMOTOR FOR CONTINUOUSLY MOVING SAID ELEMENT ALONG SAID PATH IN ACCORD WITH SAID COMMAND SIGNAL, FEED DRIVE MEANS COUPLING SAID SERVOMOTOR TO SAID ELEMENT, A MAIN FEEDBACK LOOP INCLUDING A FEEDBACK TRANSDUCER OPERATED RESPONSIVE TO MOTION OF A DRIVE ELEMENT AT THE INPUT TO SAID FEED DRIVE DYNAMICALLY SPACED FROM SAID MOVABLE ELEMENT AND CLOSELY COUPLED TO SAID SERVOMOTOR SO AS TO EXCLUDE SAID DRIVE MEANS FROM SAID MAIN FEEDBACK LOOP PROVIDING A FEEDBACK SIGNAL, MEANS IN SAID MAIN FEEDBACK LOOP FOR COMBINING SAID COMMAND AND FEEDBACK SIGNALS AND FOR PROVIDING AN OUTPUT SIGNAL TO SAID SERVOMOTOR FOR DRIVING SAID SERVOMOTOR IN A DIRECTION TENDING TO ELIMINATE SAID FEEDBACK SIGNAL AND TO A
Claim 2
Dependent Claim
133 words
IN A CONTROL SYSTEM FOR POSITIONING A MOVABLE ELEMENT ALONG A PATH RESPONSIVE TO A CONTINUOUSLY SUPPLIED COMMAND SIGNAL, A SERVOMOTOR FOR CONTINUOUSLY MOVING SAID ELEMENT ALONG SAID PATH IN ACCORD WITH SAID COMMAND SIGNAL, FEED DRIVE MEANS COUPLING SAID SERVOMOTOR TO SAID ELEMENT, A MAIN FEEDBACK LOOP INCLUDING A FEEDBACK TRANSDUCER OPERATED RESPONSIVE TO MOTION OF A DRIVE ELEMENT AT THE INPUT TO SAID FEED DRIVE DYNAMICALLY SPACED FROM SAID MOVABLE ELEMENT AND CLOSELY COUPLED TO SAID SERVOMOTOR SO AS TO EXCLUDE SAID DRIVE MEANS FROM SAID MAIN FEEDBACK LOOP PROVIDING A FEEDBACK SIGNAL, MEANS IN SAID MAIN FEEDBACK LOOP FOR COMBINING SAID COMMAND AND FEEDBACK SIGNALS AND FOR PROVIDING AN OUTPUT SIGNAL TO SAID SERVOMOTOR FOR DRIVING SAID SERVOMOTOR IN A DIRECTION TENDING TO ELIMINATE SAID FEEDBACK SIGNAL AND TO A
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) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |