US3564533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triangular graphic digitizer
Assignee: Individual
•
Filing: 1966-10-06
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Granted: 1971-02-16
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Expires: 1986-10-06
Abstract
Abstract D R A W I N G A TRIANGULAR GRAPHIC DIGITIZER. EACH OF TWO CABLES IS PIVOTALLY CONNECTED AT ONE END TO A COMMON HANDPIECE. THE OTHER END OF EACH CABLE IS WOUND AROUND A RESPECTIVE ENCODER WHOSE OUTPUT IS PROPORTIONAL TO THE DISTANCE OF THE CABLE TO THE HANDPIECE. EACH CABLE PASSES OVER A PULLEY WHICH IS MOUNTED TO SWIVEL AROUNG AN AXIS PERPENDICULAR TO THE PLANE OF THE WORKING SURFACE. THE SWIVELING PULLEYS INSURE THAT THE LENGTHS OF THE CABLES REPRESNT THE TRUE POSITION OF THE HANDPIECE WITH NO ERRORS ARISING BECAUSE OF CHANGES IN THE DIRECTIONS OF THE CABLES.
Inventors
- 👤 Thomas D Linn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:31
CPC Classifications
G; G06; G06K; G06K11/00; H; H03; H03M; H03M1/00; H03M1/12; H03M1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |