US3229506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscosity measuring instrument
Assignee: Individual
•
Filing: 1962-11-14
•
Granted: 1966-01-18
•
Expires: 1982-11-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert K Bruss
- 👤 Abund O Wist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:59
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/10; G01N11/02; G01N11/04; G01N11/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A VISCOMETER COMPRISING AN ENCLOSED CELL PROVIDED WITH AN INLET FOR ADMISSION OF A SUBSTANCE TO BE MEASURED AND AN OUTLET PROVIDING A PREDETERMINED RESTRICTIVE EFFECT ON THE FLOW OF THE SUBSTANCE FROM SAID CELL, A ROTARY IMPELLER WITHIN SAID CELL FOR FORCING THE SUBSTANCE THROUGH SAID OUTLET, MEANS INCLUDING AN ELECTRIC MOTOR HAVING A ROTOR, INCLUDING SAID IMPELLER, AND A STATOR FOR DRIVING SAID IMPELLER TO ROTATE AT A SUBSTANTIALLY CONSTANT SPEED, AND MEANS FOR MEASURING THE DRIVING FORCE APPLIED TO SAID IMPELLER.
Claim 2
Dependent Claim
84 words
A VISCOMETER COMPRISING AN ENCLOSED CELL PROVIDED WITH AN INLET FOR ADMISSION OF A SUBSTANCE TO BE MEASURED AND AN OUTLET PROVIDING A PREDETERMINED RESTRICTIVE EFFECT ON THE FLOW OF THE SUBSTANCE FROM SAID CELL, A ROTARY IMPELLER WITHIN SAID CELL FOR FORCING THE SUBSTANCE THROUGH SAID OUTLET, MEANS INCLUDING AN ELECTRIC MOTOR HAVING A ROTOR, INCLUDING SAID IMPELLER, AND A STATOR FOR DRIVING SAID IMPELLER TO ROTATE AT A SUBSTANTIALLY CONSTANT SPEED, AND MEANS FOR MEASURING THE DRIVING FORCE APPLIED TO SAID IMPELLER.
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |