US2845793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining the rate of settling of suspensions
Assignee: California Research LLC
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Filing: 1954-06-18
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Granted: 1958-08-05
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Expires: 1974-06-18
Abstract
No abstract record available.
Inventors
- 👤 Jr William T Cardwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:56
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/30; E; E21; E21B; E21B21/00; E21B21/06; E21B49/00; E21B49/005; G; G01; G01N; G01N15/00; G01N15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
APPARATUS FOR MEASURING THE RATE OF SETTLING OF AN OPAQUE SUSPENSION COMPRISING AN ELONGATED TUBULAR CUP MEMBER, MEAWNS FOR PIVOTALLY SUPPORTING SAID CUP MEMBER FOR OSCILLATION ABOUT A SELECTED AXIS ABOVE ITS CENTER OF MASS WITH A PAIR OF PIVOT POINTS TRANSVERSELY DISPOSED WITH RESPECT TO THE MAJOR AXIS OF SAID CUP MEMBER AND A CAP MEMBER FOR CONFINING A BODY OF SAID SUSPENSION OF PREDETERMINABLE VOLUME WITHIN SAID CUP MEMBER AND MEANS FOR MEASURING THE PERIOD OF OSCILLATION OF SAID BODY OF SAID SUSPENSION IN SAID CUP MEMBER UNDER DIFFERENT CONDITIONS FOR THE DISTRIBUTION OF THE LIQUID AND SOLID COMPONENTS OF SAID OPAQUE SUSPENSION.
Claim 2
Dependent Claim
105 words
APPARATUS FOR MEASURING THE RATE OF SETTLING OF AN OPAQUE SUSPENSION COMPRISING AN ELONGATED TUBULAR CUP MEMBER, MEAWNS FOR PIVOTALLY SUPPORTING SAID CUP MEMBER FOR OSCILLATION ABOUT A SELECTED AXIS ABOVE ITS CENTER OF MASS WITH A PAIR OF PIVOT POINTS TRANSVERSELY DISPOSED WITH RESPECT TO THE MAJOR AXIS OF SAID CUP MEMBER AND A CAP MEMBER FOR CONFINING A BODY OF SAID SUSPENSION OF PREDETERMINABLE VOLUME WITHIN SAID CUP MEMBER AND MEANS FOR MEASURING THE PERIOD OF OSCILLATION OF SAID BODY OF SAID SUSPENSION IN SAID CUP MEMBER UNDER DIFFERENT CONDITIONS FOR THE DISTRIBUTION OF THE LIQUID AND SOLID COMPONENTS OF SAID OPAQUE SUSPENSION.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |