US3115769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscometer spindle
Assignee: Individual
•
Filing: 1962-10-10
•
Granted: 1963-12-31
•
Expires: 1982-10-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard Le Baron Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:37
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
IN A ROTATIONAL VISCOMETER, A DRIVEN ELEMENT INCLUDING A COUPLING, MEANS FOR MEASURING THE TORQUE APPLIED TO SAID ELEMENT, A SPINDLE FOR MOUNTING IN SAID COUPLING COMPRISING A SHAFT OF SMALL DIAMETER, A RIGHT CIRCULAR CYLINDRICAL SECTION OF LARGER DIAMETER THAN SAID SHAFT FIXED CONCENTRICALLY ON SAID SHAFT, A CIRCULAR ELEMENT OF THE SAME DIAMETER AS SAID CYLINDER ALSO FIXED CONCENTRICALLY TO SAID SHAFT, SAID CIRCULAR ELEMENT CONSISTING OF TWO HALVES EACH OF WHICH IS GEOMETRICALLY EQUIVALENT TO ONE OF THE ENDS OF SAID CYLINDER.
Claim 2
Dependent Claim
85 words
IN A ROTATIONAL VISCOMETER, A DRIVEN ELEMENT INCLUDING A COUPLING, MEANS FOR MEASURING THE TORQUE APPLIED TO SAID ELEMENT, A SPINDLE FOR MOUNTING IN SAID COUPLING COMPRISING A SHAFT OF SMALL DIAMETER, A RIGHT CIRCULAR CYLINDRICAL SECTION OF LARGER DIAMETER THAN SAID SHAFT FIXED CONCENTRICALLY ON SAID SHAFT, A CIRCULAR ELEMENT OF THE SAME DIAMETER AS SAID CYLINDER ALSO FIXED CONCENTRICALLY TO SAID SHAFT, SAID CIRCULAR ELEMENT CONSISTING OF TWO HALVES EACH OF WHICH IS GEOMETRICALLY EQUIVALENT TO ONE OF THE ENDS OF SAID CYLINDER.
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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |