US3650676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating textile material with a circulating liquid
Assignee: Ludvig Svensson AB
•
Filing: 1970-01-05
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Granted: 1972-03-21
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Expires: 1990-01-05
Abstract
Abstract The steps of placing material to be treated in a container, forming the material as separate bodies by placing the material in separate chambers and providing a relatively small clearance between the bodies and the chambers; forming the chambers as part of a heat-exchanger and providing a circulating treatment fluid (heating or cooling) in controlled quantities and maintaining the temperature within the chambers at a desired level; circulating the fluid in a closed circulation system and recirculating the treatment fluid repeatedly through the bodies of material and/or reversing the direction of flow of treatment fluid through the chamber.
Inventors
- 👤 Niels Rudolf Bergholtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:30
CPC Classifications
D; D06; D06B; D06B5/00; D06B5/12; D06B5/16; D06B23/00; D06B23/20; D06B23/205
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
116 words
A method for treating textile material with a liquid in which the material is formed as a number of bodies, the steps of: placing one such body in a basically complementary chamber in an apparatus having a plurality of such chambers; passing a treating liquid continuously through the chambers; supplying a heat-transfer fluid into the apparatus and outside of the chambers in controlled quantities to maintain the temperature within the chambers at an adjusted level; and introducing the fluid for heating purposes through one or more pipes in an interspace in the vicinity of an upper wall defining said space, and introducing cooling fluid through one or more pipes closed by the bottom of said interspace.
Claim 2
Dependent Claim
32 words
The method according to claim 2, including withdrawing cooling fluid from the interspace through supply pipes for the heating fluid and conveying the heating fluid by way of conduits to a receptacle.
Claim 3
Dependent Claim
40 words
The method according to claim 2, including rapidly removing the cooling fluid in the interspace by the introduction of a gaseous fluid such as compressed air or steam by passing it through heating fluid supply pipes and into the interspace.
Claim 4
Dependent Claim
48 words
The method according to claim 1 including introducing the fluid for heating purposes through one or more pipes in the interspace in the vicinity of an upper wall defining said space and forming jets striking against said wall and producing a shower spraying the walls of the chambers.
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |