US3142180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making grain shape analyses
Assignee: Gulf Research and Development Co
•
Filing: 1961-07-10
•
Granted: 1964-07-28
•
Expires: 1981-07-10
Abstract
No abstract record available.
Inventors
- 👤 William H Glezen
- 👤 Jr John C Ludwick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:51
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/02; G01N15/0272; G01N15/10; G01N15/14; G01N15/149; G01N2015/0294
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
APPARATUS FOR CLASSIFYING A PARTICLE WITH RESPECT TO ITS SHAPE COMPRISING A CHANNEL ADAPTED TO BE TRAVERSED BY THE PARTICLE, THE INTERIOR BOUNDARIES OF SAID CHANNEL BEING ROUGHENED SURFACES, MEANS CONNECTED TO SAID CHANNEL ADAPTED TO INSERT THE PARTICLE INTO ONE END OF SAID CHANNEL, MEANS PROPELLING THE PARTICLE THROUGH SAID CHANNEL BY EXECUTING A PLURALITY OF IRREGULAR BOUNCES OFF THE BOUNDARIES OF SAID CHANNEL, AND TIMING MEANS CONNECTED TO SAID CHANNEL ADAPTED TO MEASURE THE TIME REQUIRED FOR THE PARTICLE TO TRAVERSE SAID CHANNEL.
Claim 2
Dependent Claim
85 words
APPARATUS FOR CLASSIFYING A PARTICLE WITH RESPECT TO ITS SHAPE COMPRISING A CHANNEL ADAPTED TO BE TRAVERSED BY THE PARTICLE, THE INTERIOR BOUNDARIES OF SAID CHANNEL BEING ROUGHENED SURFACES, MEANS CONNECTED TO SAID CHANNEL ADAPTED TO INSERT THE PARTICLE INTO ONE END OF SAID CHANNEL, MEANS PROPELLING THE PARTICLE THROUGH SAID CHANNEL BY EXECUTING A PLURALITY OF IRREGULAR BOUNCES OFF THE BOUNDARIES OF SAID CHANNEL, AND TIMING MEANS CONNECTED TO SAID CHANNEL ADAPTED TO MEASURE THE TIME REQUIRED FOR THE PARTICLE TO TRAVERSE SAID CHANNEL.
References Cited (Backward Citations)
CA471449A
Cited
US2781127A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |