US3279225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for wet spinning
Assignee: Monsanto Co
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Filing: 1964-04-02
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Granted: 1966-10-18
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Expires: 1984-04-02
Abstract
No abstract record available.
Inventors
- 👤 John P Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:40
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
CASCADE WASHING APPARATUS COMPRISING: (A) AN INCLINED TROUGH, (B) MEANS FOR ADVANCING A TOW THROUGH THE TROUGH TOWARD THE HIGHER END THEREOF, (C) MEANS TO INTRODUCE LIQUID TO SAID TROUGH FOR GRAVITY FLOW THERETHROUGH IN A DIRECTIN COUNTERCURRENT TO THE PATH OF SAID TOW, (D) SAID TROUGH HAVING APERTURES SPACED ACROSS THE BREADTH OF THE BOTTOM THEREOF AT SPACED POINTS ALONG ITS LENGTH, AND (E) MEANS TO INTRODUCE LIQUID UNDER PRESSURE THROUGH SAID APERTURES IN A DIRECTION INTERSECTING THE PATH OF SAID TOW AND COUNTER TO THE MAIN FLOW OF LIQUID DOWN SAID TROUGH TO CAUSE TURBULENCE IN SAID MAIN FLOW OF LIQUID.
Claim 2
Dependent Claim
103 words
CASCADE WASHING APPARATUS COMPRISING: (A) AN INCLINED TROUGH, (B) MEANS FOR ADVANCING A TOW THROUGH THE TROUGH TOWARD THE HIGHER END THEREOF, (C) MEANS TO INTRODUCE LIQUID TO SAID TROUGH FOR GRAVITY FLOW THERETHROUGH IN A DIRECTIN COUNTERCURRENT TO THE PATH OF SAID TOW, (D) SAID TROUGH HAVING APERTURES SPACED ACROSS THE BREADTH OF THE BOTTOM THEREOF AT SPACED POINTS ALONG ITS LENGTH, AND (E) MEANS TO INTRODUCE LIQUID UNDER PRESSURE THROUGH SAID APERTURES IN A DIRECTION INTERSECTING THE PATH OF SAID TOW AND COUNTER TO THE MAIN FLOW OF LIQUID DOWN SAID TROUGH TO CAUSE TURBULENCE IN SAID MAIN FLOW OF LIQUID.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |