Patent US3722819A successfully refreshed from Google Patents.
US3722819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulsed jet riot control apparatus
Assignee: EXOTECH
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Filing: 1971-04-19
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Granted: 1973-03-27
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Expires: 1991-04-19
Abstract
Abstract Apparatus for forming pulsed jets of liquid at relatively low pressures and capable of expelling the pulsed jets over moderate distances for use as a riot control device. A compressed gas is passed to a chamber having liquid therein so that upon actuation of a quick opening valve the liquid is forced from the chamber, through an acceleration tube and out a nozzle. The quick opening valve might be positioned between the pressurized gas source and the liquid chamber, or it might be in the acceleration tube. The gas can act directly on the liquid or it can act through a piston.
Inventors
- 👤 J Hall
- 👤 L Clipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:19
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/02; B05B12/06; B05B1/00; B05B1/02; B05B1/08; B05B1/083; B05B9/00; B05B9/03; B05B9/04; B05B9/047
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
Riot Control apparatus utilizing pulsed jets of liquid comprising: an enclosed liquid reservoir having a first valved inlet adapted for connection to a source of liquid and having a second inlet; a gas supply line coupled to said second inlet and adapted for connection to a pressurized gas source; an acceleration tube having an outlet and having an inlet within said enclosed liquid reservoir; a nozzle connected to said acceleration tube outlet; and quick opening valve means coupled to said enclosed liquid reservoir and capable of actuation to expel liquid, under pressure of gas from said gas supply line, through said acceleration tube and out said nozzle as a pulsed liquid jet.
Claim 2
Dependent Claim
112 words
Riot Control apparatus utilizing pulsed jets of liquid comprising: an enclosed liquid reservoir having a first valved inlet adapted for connection to a source of liquid and having a second inlet; a gas supply line coupled to said second inlet and adapted for connection to a pressurized gas source; an acceleration tube having an outlet and having an inlet within said enclosed liquid reservoir; a nozzle connected to said acceleration tube outlet; and quick opening valve means coupled to said enclosed liquid reservoir and capable of actuation to expel liquid, under pressure of gas from said gas supply line, through said acceleration tube and out said nozzle as a pulsed liquid jet.
Claim 3
Dependent Claim
65 words
Apparatus as claimed in claim 1 in which said quick opening valve couples said gas supply line with said enclosed liquid reservoir second inlet so that upon actuation of said quick opening valve pressurized gas from said gas supply line applies pressure to liquid within said enclosed liquid reservoir to expel liquid through said acceleration tube and out said nozzle as a pulsed liquid jet.
Claim 4
Dependent Claim
56 words
Apparatus as claimed in claim 1 in which said quick opening valve is within said acceleration tube so that upon actuation of said quick opening valve liquid within said enclosed liquid reservoir is expelled through said acceleration tube and out said nozzle as a pulsed liquid jet under pressure of gas from said gas supply line.
Claim 5
Dependent Claim
66 words
Apparatus as claimed in claim 1 further comprising a piston within said enclosed liquid reservoir and intermediate the first valved inlet and the second inlet so that upon actuation of the quick opening valve gas from the gas supply line applies pressure through the piston to expel liquid from said enclosed liquid reservoir through said acceleration tube and out said nozzle as a pulsed liquid jet.
Claim 6
Dependent Claim
66 words
Apparatus as claimed in claim 2 further comprising a piston within said enclosed liquid reservoir and intermediate the first valved inlet and the second inlet so that upon actuation of the quick opening valve gas from the gas supply line applies pressure through the piston to expel liquid from said enclosed liquid reservoir through said acceleration tube and out said nozzle as a pulsed liquid jet.
Claim 7
Dependent Claim
66 words
Apparatus as claimed in claim 3 further comprising a piston within said enclosed liquid reservoir and intermediate the first valved inlet and the second inlet so that upon actuation of the quick opening valve gas from the gas supply line applies pressure through the piston to expel liquid from said enclosed liquid reservoir through said acceleration tube and out said nozzle as a pulsed liquid jet.
Claim 8
Dependent Claim
25 words
Apparatus as claimed in claim 1 in which said gas supply line includes a gas accumulator for accUmulating gas for one operation of said apparatus.
Claim 9
Dependent Claim
83 words
Apparatus as claimed in claim 1 in which said first valved inlet and said second inlet each communicate with said enclosed liquid reservoir adjacent the top thereof and in which said acceleration tube inlet is within said enclosed liquid reservoir adjacent the bottom thereof to permit entry of liquid into said reservoir through said first valved inlet and application of pressurized gas through said second inlet onto liquid within said enclosed liquid reservoir to force liquid within said reservoir out said acceleration tube.
Claim 10
Dependent Claim
76 words
Apparatus as claimed in claim 4 in which said valved inlet communicates with said enclosed liquid reservoir adjacent the top thereof and said second inlet communicates with said enclosed liquid reservoir adjacent the bottom thereof to permit entry of liquid into said reservoir on the first side of said piston and entry of pressurized gas into said reservoir on the second side of said piston to raise said piston and expel liquid out said acceleration tube.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |