US3137443A
Expired / Lapsed
US
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Assignee: Individual
•
Filing: 1962-04-02
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Granted: 1964-06-16
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Samuelson Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:21
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07D307/20; G; G06; G06G; G06G1/00; G06G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
AN INSTRUMENT FOR DETERMINING TRIGONOMETRIC FUNCTIONS AND FOR CONVERTING BETWEEN POLAR AND RECTANGULAR COORDINATES, COMPRISING A BASE PLATE, A HORIZONTAL LINEAR SCALE EXTENDING TRANSVERSELY ACROSS THE PLATE, A TRANSPARENT CIRCULAR PLATE ON THE BASE PLATE, SAID HORIZONTAL LINEAR SCALE BEING SUBSTANTIALLY EQUAL IN LENGTH TO THE DIAMETER OF THE TRANSPARENT CIRCULAR PLATE, SAID HORIZONTAL LINEAR SCALE BEING DISPOSED DIAMETRALLY OF THE TRANSPARENT CIRCULAR PLATE AND BEING VISIBLY THERETHROUGH, SAID CIRCULAR PLATE HAVING A RADIAL LINEAR SCALE THEREON, A TOP PLATE ON THE BASE PLATE HAVING A CIRCULAR HOLE, SAID CIRCULAR PLATE BEING ROTATABLE ON THE BASE PLATE IN SAID HOLE IN THE TOP PLATE, THE HOLE IN THE TOP PLATE HAVING A CIRCULAR RIM INSCRIBED CIRCUMFERENTIALLY WITH A CIRCULAR SCALE IN ANGULAR DEGREES, A SLIDE ENGAGED WITH THE BASE PLATE AND GUIDED THEREBY TO LATERAL MOVEMENTS PARALLEL TO THE HORIZONTAL LINEAR SCALE, SAID SLIDE INCLUDING A TRANSPARENT STRIP EXTENDING OVER THE TOP PLATE AND CIRCULAR PLATE, SAID STRIP BEING INSCRIBED WITH A VERTICAL LINEAR SCALE DISPOSED PERPENDICULAR TO THE FIRST LINEAR SCALE, WHEREBY THE VERTICAL SCALE INTERSECTS THE HORIZONTAL, RADIAL AND CIRCULAR SCALES AT ALL POSITIONS OF THE SLIDE AND CIRCULAR PLATE ON THE BASE PLATE, AND THE RADIAL SCALE EXTENDS FROM THE CENTER OF THE HORIZONTAL SCALE TO THE CIRCULAR SCALE IN ALL POSITIONS OF THE CIRCULAR PLATE.
Claim 2
Dependent Claim
219 words
AN INSTRUMENT FOR DETERMINING TRIGONOMETRIC FUNCTIONS AND FOR CONVERTING BETWEEN POLAR AND RECTANGULAR COORDINATES, COMPRISING A BASE PLATE, A HORIZONTAL LINEAR SCALE EXTENDING TRANSVERSELY ACROSS THE PLATE, A TRANSPARENT CIRCULAR PLATE ON THE BASE PLATE, SAID HORIZONTAL LINEAR SCALE BEING SUBSTANTIALLY EQUAL IN LENGTH TO THE DIAMETER OF THE TRANSPARENT CIRCULAR PLATE, SAID HORIZONTAL LINEAR SCALE BEING DISPOSED DIAMETRALLY OF THE TRANSPARENT CIRCULAR PLATE AND BEING VISIBLY THERETHROUGH, SAID CIRCULAR PLATE HAVING A RADIAL LINEAR SCALE THEREON, A TOP PLATE ON THE BASE PLATE HAVING A CIRCULAR HOLE, SAID CIRCULAR PLATE BEING ROTATABLE ON THE BASE PLATE IN SAID HOLE IN THE TOP PLATE, THE HOLE IN THE TOP PLATE HAVING A CIRCULAR RIM INSCRIBED CIRCUMFERENTIALLY WITH A CIRCULAR SCALE IN ANGULAR DEGREES, A SLIDE ENGAGED WITH THE BASE PLATE AND GUIDED THEREBY TO LATERAL MOVEMENTS PARALLEL TO THE HORIZONTAL LINEAR SCALE, SAID SLIDE INCLUDING A TRANSPARENT STRIP EXTENDING OVER THE TOP PLATE AND CIRCULAR PLATE, SAID STRIP BEING INSCRIBED WITH A VERTICAL LINEAR SCALE DISPOSED PERPENDICULAR TO THE FIRST LINEAR SCALE, WHEREBY THE VERTICAL SCALE INTERSECTS THE HORIZONTAL, RADIAL AND CIRCULAR SCALES AT ALL POSITIONS OF THE SLIDE AND CIRCULAR PLATE ON THE BASE PLATE, AND THE RADIAL SCALE EXTENDS FROM THE CENTER OF THE HORIZONTAL SCALE TO THE CIRCULAR SCALE IN ALL POSITIONS OF THE CIRCULAR PLATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |