US3109974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool control system having feedrate control
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-06-19
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Granted: 1963-11-05
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Clyde E Hallmark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:26
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/416; G05B2219/00; G05B2219/30; G05B2219/43; G05B2219/43006; G05B2219/43139; Y; Y10; Y10S; Y10S242/00; Y10S242/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A SYSTEM FOR EFFECTING THE PROGRAMMED MOVEMENT OF AN ELEMENT, A SERVO SYSTEM FOR MOVING SAID ELEMENT, CYCLICALLY OPERABLE COMMAND SIGNAL GENERATOR MEANS HAVING FIRST AND SECOND CONTROL SIGNAL INPUTS AND ARRANGED TO APPLY A COMMAND SIGNAL TO SAID SERVO SYSTEM TO MOVE SAID ELEMENT AT A VELOCITY PROPORTIONAL TO THE PRODUCT OF THE VALUES OF SIGNALS APPLIED TO SAID INPUTS, CONTROL MEANS FOR NORMALLY APPLYING A FIRST SIGNAL OF FIXED VALUE TO SAID FIRST INPUT, PROGRAM MEANS FOR APPLYING A SECOND SIGNAL TO SAID SECOND INPUT TO NORMALLY PRODUCE A CERTAIN VELOCITY OF MOVEMENT OF SAID ELEMENT IN EACH CYCLE OF OPERATION OF SAID GENERATOR, AND MEANS FOR MODIFYING THE OPERATION OF SAID CONTROL MEANS TO INCREASE SAID FIRST SIGNAL FROM A LOW VALUE TO SAID FIXED VALUE DURING AN INITIAL PORTION OF A CYCLE OF OPERATION.
Claim 2
Dependent Claim
139 words
IN A SYSTEM FOR EFFECTING THE PROGRAMMED MOVEMENT OF AN ELEMENT, A SERVO SYSTEM FOR MOVING SAID ELEMENT, CYCLICALLY OPERABLE COMMAND SIGNAL GENERATOR MEANS HAVING FIRST AND SECOND CONTROL SIGNAL INPUTS AND ARRANGED TO APPLY A COMMAND SIGNAL TO SAID SERVO SYSTEM TO MOVE SAID ELEMENT AT A VELOCITY PROPORTIONAL TO THE PRODUCT OF THE VALUES OF SIGNALS APPLIED TO SAID INPUTS, CONTROL MEANS FOR NORMALLY APPLYING A FIRST SIGNAL OF FIXED VALUE TO SAID FIRST INPUT, PROGRAM MEANS FOR APPLYING A SECOND SIGNAL TO SAID SECOND INPUT TO NORMALLY PRODUCE A CERTAIN VELOCITY OF MOVEMENT OF SAID ELEMENT IN EACH CYCLE OF OPERATION OF SAID GENERATOR, AND MEANS FOR MODIFYING THE OPERATION OF SAID CONTROL MEANS TO INCREASE SAID FIRST SIGNAL FROM A LOW VALUE TO SAID FIXED VALUE DURING AN INITIAL PORTION OF A CYCLE OF OPERATION.
References Cited (Backward Citations)
US3015806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |