Squaring tool
Abstract
Abstract THE PRESENT INVENTION IS DIRECTED TO A TOOL FOR DETERMINING, WITHIN LIMITS, WHETHER ONE SURFACE IS AT RIGHT ANGLES TO ANOTHER SURFACE. THE TOOL CONSISTS OF A CIRCULAR WHEEL-LIKE BASE AND A COAXIAL CYLINDRICAL SHAFT FIXED PERPENDICULAR TO THE BASE. ATTACHED TO THE SHAFT IS A SENSITIZER OR PICKYP ARM ADAPTED TO CONTACT A SURFACE AT RIGHT ANGLES TO THE SURFACE SUPPORTING THE BASE. ASSOCIATED WITH THE SENSITIZER ARM IS AN INDICATOR WHOSE READING IS CONTROLLED BY THE MOVEMENT OF THE SENSITIZER ARM. ALSO PROVIDED IS A SECOND CIRCULAR WHEEL-LIKE ELEMENT ADAPTED TO BE REMOVABLY ATTACHED TO THE FREE END OF THE SHAFT, WHICH, TOGETHER WITH THE WHEEL-LIKE BASE, IS USED TO ZERO THE SENSITIZING ARM WHEN THE TOOL IS PLACED ON ITS SIDE WITH THE TWO WHEELS RESTING ON THE SAME FLAT SURFACE.
Inventors
- 👤 Francesco Guzzo
Bibliographic Details
Claims Analysis
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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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |