Patent US3677038A successfully refreshed from Google Patents.
US3677038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber washing apparatus
Assignee: Specialty Foods Investment Co
•
Filing: 1970-07-06
•
Granted: 1972-07-18
•
Expires: 1990-07-06
Abstract
Abstract Apparatus is described for washing and drying a tow of proteinaceous fibers which comprises conveyor means for conveying the tow along a generally horizontal flow path and a plurality of treating means positioned along the tow flow path for sequentially treating the tow, such treating means comprising means for applying wash solutions to the tow, means for moving wash solution from the tow, means for applying rinse solution to the tow, means for removing rinse solution from the tow and gas flow means for drying the tow.
Inventors
- 👤 Warren Emery Hartman
- 👤 William Randall Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0472; D01D10/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
Apparatus for washing and drying a tow of fibers which comprises conveyor means for conveying said tow along a generally horizontal tow flow path and a plurality of treating means positioned along said tow flow path for sequentially treating said tow, said plurality of treating means comprising first means for applying a wash solution to the underside of the tow and passing said wash solution up through the tow, second means for applying a wash solution to the upperside of the tow and passing said wash solution down through the tow, third means for applying a rinse solution to the upperside of the washed tow and passing said rinse solution down through the tow, gas applying means for passing a gas through the rinsed tow to fluff and dry said tow, and means for removing liquid from the portions of the tow adjacent said second and third solution applying means.
Claim 2
Dependent Claim
150 words
Apparatus for washing and drying a tow of fibers which comprises conveyor means for conveying said tow along a generally horizontal tow flow path and a plurality of treating means positioned along said tow flow path for sequentially treating said tow, said plurality of treating means comprising first means for applying a wash solution to the underside of the tow and passing said wash solution up through the tow, second means for applying a wash solution to the upperside of the tow and passing said wash solution down through the tow, third means for applying a rinse solution to the upperside of the washed tow and passing said rinse solution down through the tow, gas applying means for passing a gas through the rinsed tow to fluff and dry said tow, and means for removing liquid from the portions of the tow adjacent said second and third solution applying means.
Claim 3
Dependent Claim
43 words
Apparatus according to claim 1 having means for passing a gas up through the tow to remove liquid from the tow, said means being located along the tow flow path ahead of said first means for applying a wash solution to the tow.
Claim 4
Dependent Claim
44 words
Apparatus according to claim 1 wherein said means for removing liquid comprises means for applying subatmospheric pressure to the underside of the tow as it is moved along said tow path past said second and third solution applying means and said gas applying means.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 1 wherein said conveyor means comprises a porous filter cloth.
Claim 6
Dependent Claim
48 words
Apparatus according to claim 1 wherein said conveyor means comprises, in combination, a porous filter cloth superimposed on a porous conveyor belt, such that the tow being transported is disposed on the filter cloth which is in turn in frictional contact with and driven by the conveyor belt.
Claim 7
Dependent Claim
156 words
Apparatus according to claim 1 wherein the first means for applying a wash solution to the underside of the two comprises a generally horizontal conduit means below said tow path having a plurality of openings along its upper surface through which said wash solution passes, said second means for applying a wash solution to the upper side of the tow comprises generally horizontal conduit means above said tow path having a plurality of openings along its lower surface through which said wash solution passes, said third means for applying a rinse solution to the upper side of the tow comprises generally horizontal conduit means above said tow path having a plurality of openings along its lower surface through which said rinse solution passes, and said means for passing a gas through the tow comprises generally horizontal conduit means above said flow path having a plurality of openings along its lower surface through which said gas passes.
References Cited (Backward Citations)
US3123994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |