US3147915A
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Assignee: Individual
•
Filing: 1962-03-21
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Granted: 1964-09-08
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Expires: 1982-03-21
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Cresswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:51
CPC Classifications
G; G06; G06G; G06G1/00; G06G1/02; G06G1/04; G06G1/08; G06G1/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A CALCULATOR INCLUDING IN COMBINATION A TRANSPARENT OUTER TUBULAR MEMBER HAVING A BORE EXTENDING THERETHROUGH AND HAVING INSCRIBED SPACED INDICIA, SAID SPACED INDICIA BEING PARALLEL TO THE AXIS OF ROTATION; A TRANSPARENT INTERMEDIATE TUBULAR MEMBER HAVING A BORE EXTENDING THERETHROUGH AND ROTATABLY DISPOSED WITHIN THE BORE OF THE OUTER TUBULAR MEMBER, SAID INTERMEDIATE MEMBER HAVING A HELICAL INSCRIPTION EXTENDING LONGITUDINALLY AND CONCENTRICALLY WITH RESPECT TO THE AXIS; AND AN INNER CYLINDRICAL MEMBER ROTATABLY DISPOSED WITHIN THE BORE OF THE INTERMEDIATE TUBULAR MEMBER, SAID INNER MEMBER HAVING A HELICAL INSCRIPTION EXTENDING LONGITUDINALLY AND CONCENTRICALLY WITH RESPECT TO THE AXIS OF SAID INNER MEMBER; SAID HELICAL INSCRIPTIONS TRAVERSING ONE COMPLETE REVOLUTION LONGITUDINALLY OF SAID INTERMEDIATE AND INNER MEMBERS, WHEREIN THE LENGTH OF SAID HELICAL INSCRIPTIONS DETERMINES THE EFFECTIVE LENGTH OF SAID SPACED INDICIA, SAID INNER AND INTERMEDIATE MEMBERS HAVING A FLANGE DISPOSED AT ONE END THEREOF AND SAID OUTER MEMBER HAVING FLANGES DISPOSED AT EACH END THEREOF, SAID FLANGES SERVING TO RESTRICT LONGITUDINAL MOVEMENT OF SAID MEMBERS AND A THREADED END DISPOSED AT AN END OF SAID INNER MEMBER, SAID THREADED END SERVING TO RECEIVE A SPRING AND A NUT SO THAT SAID CALCULATOR IS DISPOSED IN FIXED YIELDING POSITION.
Claim 2
Dependent Claim
198 words
A CALCULATOR INCLUDING IN COMBINATION A TRANSPARENT OUTER TUBULAR MEMBER HAVING A BORE EXTENDING THERETHROUGH AND HAVING INSCRIBED SPACED INDICIA, SAID SPACED INDICIA BEING PARALLEL TO THE AXIS OF ROTATION; A TRANSPARENT INTERMEDIATE TUBULAR MEMBER HAVING A BORE EXTENDING THERETHROUGH AND ROTATABLY DISPOSED WITHIN THE BORE OF THE OUTER TUBULAR MEMBER, SAID INTERMEDIATE MEMBER HAVING A HELICAL INSCRIPTION EXTENDING LONGITUDINALLY AND CONCENTRICALLY WITH RESPECT TO THE AXIS; AND AN INNER CYLINDRICAL MEMBER ROTATABLY DISPOSED WITHIN THE BORE OF THE INTERMEDIATE TUBULAR MEMBER, SAID INNER MEMBER HAVING A HELICAL INSCRIPTION EXTENDING LONGITUDINALLY AND CONCENTRICALLY WITH RESPECT TO THE AXIS OF SAID INNER MEMBER; SAID HELICAL INSCRIPTIONS TRAVERSING ONE COMPLETE REVOLUTION LONGITUDINALLY OF SAID INTERMEDIATE AND INNER MEMBERS, WHEREIN THE LENGTH OF SAID HELICAL INSCRIPTIONS DETERMINES THE EFFECTIVE LENGTH OF SAID SPACED INDICIA, SAID INNER AND INTERMEDIATE MEMBERS HAVING A FLANGE DISPOSED AT ONE END THEREOF AND SAID OUTER MEMBER HAVING FLANGES DISPOSED AT EACH END THEREOF, SAID FLANGES SERVING TO RESTRICT LONGITUDINAL MOVEMENT OF SAID MEMBERS AND A THREADED END DISPOSED AT AN END OF SAID INNER MEMBER, SAID THREADED END SERVING TO RECEIVE A SPRING AND A NUT SO THAT SAID CALCULATOR IS DISPOSED IN FIXED YIELDING POSITION.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |