Patent US3566477A successfully refreshed from Google Patents.
US3566477A
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US
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Measuring instrument
Assignee: Individual
•
Filing: 1968-04-16
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Granted: 1971-03-02
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Expires: 1988-04-16
Abstract
Abstract A MEASURING INSTRUMENT COMPRISING A DRUM AND A WIRE OR TAPE, ONE END OF WHICH IS ATTACHED TO THE DRUM AND THE OTHER END OF WHICH IS ATTACHED TO A MEMBER WHICH IS MOVABLE RELATIVE TO THE DRUM. THE DRUM IS SPRING URGED TO ROTATE THE DRUM ABOUT ITS AXIS IN A SENSE TO WIND THE WIRE OR TAPE ON TO THE DRUM AND ROTATION OF THE DRUM IS INDICATED THROUGH A GEAR TRAIN ON A SERIES OF DIALS. THE WIRE OR TAPE IS WOUND ON TO A HELICAL TRACK ON THE SURFACE OF THE DRUM, THE ANGLE OF THE WIRE TO THE HORIZONTAL IS CONSTANT AND EQUAL TO THE TRACK HELIX ANGLE THROUGHOUT WINDING OF THE WIRE OR TAPE ON AND OFF THE DRUM AND THE END OF THE WIRE FIXED TO THE MEMBER MOVES IN A FIXED PLANE.
Inventors
- 👤 Kenneth James Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:26
CPC Classifications
B; B23; B23Q; B23Q17/00; B23Q17/22; G; G01; G01B; G01B3/00; G01B3/11
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |