US3705348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and an apparatus for determining the length of fibers suspended in a liquid
Assignee: Individual
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Filing: 1970-12-21
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Granted: 1972-12-05
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Expires: 1990-12-21
Abstract
Abstract A method of measuring the length of fibers suspended in a liquid which, together with a physical flux, flows through the measuring opening of a measuring device. This device comprises a passage converging toward its exit, with a measuring opening provided at the narrowest point thereof, through which the fibers are passed at a high rate and are held in a stabilized condition without agglomeration and folding.
Inventors
- 👤 Gerardus Henricus Johan Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:50
CPC Classifications
G; G01; G01B; G01B21/00; G01B21/02; G01B21/06; G01B11/00; G01B11/02; G01B11/04; G01B11/043; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A method for determining the length of fibers suspended in a liquid in a low concentration comprising the steps of: passing said suspension through a conically converging portion of a flow tube from a wider entrance end to a narrower measuring exit end having a diameter at least twice the thickness of said fibers, at a fast rate so that said fibers individually pass out of said measuring end longitudinally oriented, passing an electrical flux through said suspension as said suspension passes said measuring exit, detecting variations in said flux, and employing the detected variations to determine the length of said fibers.
Claim 2
Independent Claim
102 words
A method for determining the length of fibers suspended in a liquid in a low concentration comprising the steps of: passing said suspension through a conically converging portion of a flow tube from a wider entrance end to a narrower measuring exit end having a diameter at least twice the thickness of said fibers, at a fast rate so that said fibers individually pass out of said measuring end longitudinally oriented, passing an electrical flux through said suspension as said suspension passes said measuring exit, detecting variations in said flux, and employing the detected variations to determine the length of said fibers.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |