Patent US3739794A successfully refreshed from Google Patents.
US3739794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for continuously preparing a gel
Assignee: Gelco-Project Lindgren and Co
•
Filing: 1971-09-10
•
Granted: 1973-06-19
•
Expires: 1991-09-10
Abstract
Abstract Method for continuously preparing a gel in which a liquid is mixed with a gelling agent in a hose or other conduit which serves to deliver the gel to the site at which it is used. The liquid and the gelling agent are supplied to the conduit in the proper proportions so that the gel is formed or completed approximate the output end of the conduit. The invention also includes apparatus for carrying out the specified method.
Inventors
- 👤 M Lindgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:41
CPC Classifications
B; B01; B01F; B01F25/00; B01F25/40; B01F25/42; B01F25/43; B01F25/432; B01F25/4321; B01F25/43211; B01F25/30; B01F25/31; B01F25/313; B01F25/3131; B01F33/00; B01F33/80; B01F33/834; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/8593; Y10T137/87265; Y10T137/87338; Y10T137/87346; Y10T137/87571; Y10T137/87652; Y10T137/8766
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
77 words
The method of claim 1, wherein a portion of the total volume stream of the liquid supplied to said conduit is mixed with a gelling agent in at least one preparatory step to form a gelling mixture having a higher content of gelling agent than is desired in the final gel, and said gelling mixture of relatively high concentration is then supplied to the conduit as said gel-forming substance for the gelation process occurring in said conduit.
Claim 2
Dependent Claim
34 words
The method of claim 1 wherein said liquid is water; wherein said gel-forming substance is in an about between 2 and 4 percent of the total amount of saId water and said gel-forming substance.
Claim 3
Dependent Claim
138 words
Method for continuously preparing and delivering a water gel to a usage station by means of a conveying conduit comprising a. mixing water and an emulsifying type gel-forming agent to form a gelling mixture, b. supplying (i) said gelling mixture and (ii) additional water to said conduit, and c. controlling the proportion of said additional water and said mixture to cause the galation process to occur substantially during the entire passage through said conduit as a result of admixture of said additional water and said gelling mixture as they flow through said conduit whereby a finished gel is formed approximate the output end of said conduit and delivered from the output end of said conduit, whereby the pressure drop in the conduit is at substantially the same low level as when only water is passed through said conduit.
Claim 4
Dependent Claim
51 words
The method of claim 4 wherein said gelling mixture contains about 10 percent of said gel-forming agent, and wherein the amount of said additional water is sufficient so that said gel-forming agent is between about 2 and 4 percent of the total of said gelling mixture and of said additional water.
Claim 5
Dependent Claim
28 words
The method of claim 5 wherein said gel-forming agent comprises between 10 and 70 percent of a surface active agent and the remainder being a volatilizable hydrocarbon oil.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |