US3848802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the preparation and ejection of a viscous dilatant material
Assignee: Honeywell International Inc
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Filing: 1972-06-01
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Granted: 1974-11-19
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Expires: 1992-06-01
Abstract
Abstract A method and apparatus for the preparation of a viscous dilatant material and its application to a substrate. Reactants are internally admixed to prepare the dilatant material in a highly efficient manner prior to ejection of the dilatant material in the form of a spray. Conversion to dilatant material is readily effected at efficiencies higher than about 95 percent by weight of the reactants, and the direction and consistency of the spray of dilatant material is easily controlled.
Inventors
- 👤 E Degginger
- 👤 J Frisco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:55
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/02; B05B; B05B7/00; B05B7/02; B05B7/04; B05B7/0408; B05D1/34; B05D2401/00; B05D2401/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A PROCESS FOR PREPARING AND THEN EJECTING A VISCOUS DILATANT MATERIAL COMPRISING THE STEPS OF: A. PASSING SEPARATE AQUEOUS SOLUTION OF AN ALKALI METAL BORATE (COMPONENT A) AND A WATER-SOLUBLE VINYL ALCOHOL POLYMER (COMPONENT B) THROUGH SEPARATE CONDUITS TO A POINT OF CONVERGENCE WITHIN A DISPERSING MEANS THEREBY PARTIALLY CONVERTING EACH COMPONENT TO SAID VISCOUS DILATAND MATERIAL; B. MIXING SAID PARTIALLY CONVERTED COMPONENTS WITHINSAID DISPENSING MEANS TO OBTAIN SUBSTANTIALLY COMPLETE CONVERSION TO SAID VISCOUS DILATANT MATERIAL; AND C. EJECTING SAID VISCOUS DILATANT MATERIAL FROM THE DISPENSING MEANS IN THE FORM OF A SPRAY.
Claim 2
Dependent Claim
93 words
A PROCESS FOR PREPARING AND THEN EJECTING A VISCOUS DILATANT MATERIAL COMPRISING THE STEPS OF: A. PASSING SEPARATE AQUEOUS SOLUTION OF AN ALKALI METAL BORATE (COMPONENT A) AND A WATER-SOLUBLE VINYL ALCOHOL POLYMER (COMPONENT B) THROUGH SEPARATE CONDUITS TO A POINT OF CONVERGENCE WITHIN A DISPERSING MEANS THEREBY PARTIALLY CONVERTING EACH COMPONENT TO SAID VISCOUS DILATAND MATERIAL; B. MIXING SAID PARTIALLY CONVERTED COMPONENTS WITHINSAID DISPENSING MEANS TO OBTAIN SUBSTANTIALLY COMPLETE CONVERSION TO SAID VISCOUS DILATANT MATERIAL; AND C. EJECTING SAID VISCOUS DILATANT MATERIAL FROM THE DISPENSING MEANS IN THE FORM OF A SPRAY.
Claim 3
Dependent Claim
22 words
A process as recited in claim 1 wherein a twisting motion is imparted to the partially converted components during the mixing step.
Claim 4
Dependent Claim
39 words
A process as recited in claim 2 wherein said dispensing means has an orifice therein for the ejection of said viscous dilatant material therethrough, and said point of convergence is located about 1 to 6 inches from the orifice.
Claim 5
Dependent Claim
21 words
A process As recited in claim 1 wherein said partially converted components move in a helical path during the mixing step.
Claim 6
Dependent Claim
34 words
A process as recited in claim 1 wherein said dilatant material contains from about 0.1 to 5.0 weight percent alkali metal borate and from about 0.1 to 5.0 weight percent water-soluble vinyl alcohol polymer.
Claim 7
Dependent Claim
38 words
A process as recited in claim 1 wherein the alkali metal borate of component A is an alkali metal salt of a boric acid selected from the group consisting of H2B4O7, HBO2, H2B2O4, H2B6O10, H2B12O19, H6B4O9 and H6B8O15.
Claim 8
Dependent Claim
42 words
A process as recited in claim 1, wherein the vinyl alcohol polymer of component B has up to about 50 percent of the hydroxyl groups thereof replaced by radicals selected from the group consisting of methoxy, ethoxy, acetyl, propionyl and butyryl radicals.
Claim 9
Dependent Claim
19 words
A process as recited in claim 1, wherein said alkali metal borate of component A is sodium tetraborate decahydrate.
Claim 10
Dependent Claim
32 words
A process as recited in claim 1, wherein the viscosity of said viscous dilatant material upon ejection from said dispensing means ranges from about 1.8 X 104 to 2.7 X 106 centipoises.
Claim 11
Dependent Claim
37 words
A process as recited in claim 1, wherein said vinyl alcohol polymer is a polyvinyl alcohol having a molecular weight of from about 70,000 to 120,000, said polyvinyl alcohol being from about 98 to 100 percent saponified.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |