US3613445A
Expired / Lapsed
US
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Fabric characterizing apparatus
Assignee: Monsanto Co
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Filing: 1969-12-03
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Granted: 1971-10-19
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Expires: 1989-12-03
Abstract
Abstract AN APPARATUS AND METHOD FOR DETERMINING THE ROUGHNESS AND STIFFNESS COMPONENTS OF THE HAND OF A FABRIC FROM A LOAD-EXTENSION CURVE ARE PROVIDED. THE TEST FABRIC IS FORCED VERTICALLY DOWNWARD THROUGH A SLOT AT A CONSTANT SPEED FOR A DISTANCE WHICH IS AT LEAST GREATER THAN ONEHALF THE WIDTH OF THE SLOT. A SIGNAL IS GENERATED IN PROPORTIONAL RESPONSE TO THE LOAD INCURRED IN MOVING THE FABRIC INTO AND THROUGH THE SLOT WHILE SIMULTANEOUSLY MEASURING THE DISTANCE THROUGH WHICH THE FABRIC MOVES. A LOAD-EXTENSION CURVE IS GENERATED BY PLOTTING THE SIGNAL AS A FUNCTION OF THE DISTANCE. SMOOTHNESS AND STIFFNESS (AS WELL AS "HAND") ARE OBTAINED FROM THIS CURVE.
Inventors
- 👤 Robin W Dent
- 👤 John C Oatfield
- 👤 Richard T Mayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:13
CPC Classifications
G; G01; G01N; G01N3/00; G01N33/00; G01N33/36; G01N33/367
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |