US3552236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Z-axis control system
Assignee: Pratt and Whitney Co Inc
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Filing: 1968-05-17
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Granted: 1971-01-05
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Expires: 1988-05-17
Abstract
Abstract THIS INVENTION IS DIRECTED TO CONTROL SYSTEM POSITIONING FOR THE QUILL OF A JIG BORER. IN PARTICULAR, THIS INVENTION UTILIZES A PLURALITY OF CREEP MOTORS RESPONSIVE TO COMMAND SIGNALS FROM A CONTROL CIRCUIT. THE CONTROL CIRCUIT CONTINUOUSLY COMPARES THE POSITION OF THE QUILL WITH THE SELECTED COMBINATION OF SPINDLE SPEED AND QUILL FEED. DEPENDING ON THIS COMBINATION, THE CREEP MOTORS ASSUME CONTROL OVER THE FINAL POSITIONING OF THE QUILL. FOR SOME COMBINATIONS OF THE SPINDLE FEEDS AND SPEEDS, THE PLURALITY OF CREEP MOTORS IS ENERGIZED PERIODICALLY TO BRING THE QUILL VELOCITY TO A REQUIRED LEVEL FOR FINAL POSITIONING WITHOUT LOSS OF CYCLE TIME.
Inventors
- 👤 Jozsef Meszaros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/27; B; B23; B23Q; B23Q5/00; B23Q5/22; B23Q5/32; B23Q2705/00; B23Q2705/10; B23Q2705/16; B23Q2705/165; G05B2219/00; G05B2219/30; G05B2219/35; G05B2219/35232; G05B2219/42; G05B2219/42213; G05B2219/43; G05B2219/43194; G05B2219/45; G05B2219/45148; G05B2219/49; G05B2219/49237; Y; Y10; Y10T; Y10T408/00; Y10T408/16; Y10T408/165; Y10T408/17
Claims Analysis
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References Cited (Backward Citations)
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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) | 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 |