US4460711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instantaneous production by ejection of a flexible foamed or solid rubber mass on a substrate
Assignee: ISPRA PROTECTION ASSOCIATES GALGAL HAPLADA ST INDUSTRIAL ZONE HERZELIA ISRAEL A OF ISRAEL LP
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Filing: 1982-09-09
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Granted: 1984-07-17
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Expires: 2002-09-09
Abstract
Abstract A flexible foamed or solid rubber mass is produced on a substrate by ejection. Two pressurized containers are used, one containing an aqueous latex dispersion together with a pressurized inert propellant and the other an aqueous coagulant solution together with a pressurized propellant and the solutions are ejected simultaneously from two vessels so as to converge on the target and impinge thereon at spots distanced from each other by not more than 50 cm. The invention also provides an apparatus for carrying out the method. The invention is applicable whenever it is desired to produce instantaneously a flexible foamed or solid rubber mass on a substrate. One of the important applications of the invention is self-defense and the combatting of riots.
Inventors
- 👤 Amnon Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:50
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/68; B05; B05B; B05B7/00; B05B7/24; B05B7/2402; B05B7/2472; F; F41; F41H; F41H9/00; Y; Y10; Y10S; Y10S261/00; Y10S261/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
130 words
A method for the instantaneous production of a foamed or solid rubber mass on a target, comprising introducing an aqueous latex dispersion together with a pressurized inert propellant into a first pressure vessel fitted with an ejection nozzle and control means; introducing an aqueous solution of a coagulant together with a pressurized propellant into a second pressure vessel fitted with an ejector nozzle and control means; placing said first and second vessels at a predetermined distance from the target in such positions that liquid jets ejected from said vessels will converge on the target and impinge thereon at spots distanced from each other by not more than 50 cms; and simultaneously actuating the control means of said vessels thereby to cause the ejection of liquid jets therefrom on said target.
Claim 2
Independent Claim
130 words
A method for the instantaneous production of a foamed or solid rubber mass on a target, comprising introducing an aqueous latex dispersion together with a pressurized inert propellant into a first pressure vessel fitted with an ejection nozzle and control means; introducing an aqueous solution of a coagulant together with a pressurized propellant into a second pressure vessel fitted with an ejector nozzle and control means; placing said first and second vessels at a predetermined distance from the target in such positions that liquid jets ejected from said vessels will converge on the target and impinge thereon at spots distanced from each other by not more than 50 cms; and simultaneously actuating the control means of said vessels thereby to cause the ejection of liquid jets therefrom on said target.
Claim 3
Dependent Claim
12 words
A method according to claim 1 employed for self-defence and combatting riots.
Claim 4
Dependent Claim
14 words
A method according to claim 1 wherein said coagulant is an aqueous acid solution.
Claim 5
Dependent Claim
12 words
A method according to claim 3 wherein said acid is citric acid.
Claim 6
Dependent Claim
15 words
A method according to claim 4 wherein the citric acid solution contains an antibacterial agent.
Claim 7
Dependent Claim
24 words
A method according to claim 1 wherein said coagulant solution is an aqueous solution of at least one component of a bivalent metal ion.
Claim 8
Dependent Claim
26 words
A method according to claim 6 wherein said bivalent ion is a member selected from ions of the group of metals Ca, Mg, Sr, Ba, Zn.
Claim 9
Dependent Claim
16 words
A method according to claim 1 wherein said coagulant solution comprises a water miscible organic solvent.
Claim 10
Dependent Claim
18 words
A method according to claim 1 wherein a mixture of at least two of the coagulants is used.
Claim 11
Dependent Claim
21 words
A method according to claim 1 wherein any of said aqueous latex dispersion and aqueous coagulant solution contain a cross-linking agent.
Claim 12
Dependent Claim
14 words
A method according to claim 1 wherein said aqueous latex dispersion contains a surfactant.
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) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |