US3841559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for forming high pressure pulsed jets of liquid
Assignee: EXOTECH
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Filing: 1973-10-18
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Granted: 1974-10-15
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Expires: 1993-10-18
Abstract
Abstract Apparatus for forming pulsed jets of liquid. A movable cylinder cooperates with a nozzle block to define a compressible charge chamber into which water, or other liquid flows. A latch retains the cylinder. When it is desired to generate a pulse, the latch is released, allowing the cylinder to move and expand the charge chamber, thereby drawing from the nozzle any liquid remaining from the preceding pulsed jet of liquid. A piston is then actuated to impact on the cylinder, compressing the chamber and expelling the charge through the nozzle as a pulsed liquid jet. The cylinder is moved so that the charge chamber is compressed and the latch again retains the device in this condition. A floating check valve permits escape of air from the chamber during filling with water.
Inventors
- 👤 J Hall
- 👤 L Clipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:44
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/18; B; B05; B05B; B05B12/00; B05B12/02; B05B12/06; B24; B24C; B24C5/00; B24C5/02; B26; B26F; B26F3/00; B26F3/004; E21D; E21D9/00; E21D9/10; E21D9/1066
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
435 words
Apparatus for forming pulsed jets of liquid comprising: a nozzle block having a fluid discharge passageway therethrough; a pressure cylinder cooperating with said nozzle block to define a compressible chamber in fluid communication with said nozzle block discharge passageway, said pressure cylinder being capable of assuming a middle, latched position relative to said nozzle block, a second, expanded position in which said compressible chamber is in an enlarged condition and a third, compressed position relative to said nozzle block in which said compressible chamber is in a compressed condition; one of said nozzle block and said pressure cylinder having a fluid inlet passageway therethrough communicating with said compressible chamber; bias means for urging said pressure cylinder to assume the second, expanded position; latch means capable of assuming a latching condition in which said latch means cooperates with said pressure cylinder to retain said pressure cylinder in the middle, latched position and of assuming a non-latching condition in which said pressure cylinder is free to assume the second, expanded position under the urging of said bias means; valve means connected to said fluid inlet pasageway and adapted for connection to a liquid source, said valve means capable of assuming a fill conditon in which liquid is permitted to flow from the liquid source through said valve means and said fluid inlet passageway to said compressible chamber and of assuming a closed position in which liquid is prevented from flowing through said valve means; impelling means for acting on said pressure cylinder to compress said compressible chamber; control means for controlling operation of said latch means, said valve means and said impelling means to cause in sequence: a. said latch means to assume the latching condition preventing said bias means from moving said pressure cylinder to the second, expanded position, said valve means to assume the fill condition, permitting liquid from the liquid source to pass through said valve means and said fluid inlet passageway to said compressible chamber; b. said latch means to assume the non-latching condition, permitting said bias means to move said pressure cylinder to the second, expanded position, said valve means to assume the closed condition, preventing liquid flow through said valve means; c. actuation of said impelling means to move said pressure cylinder to the third compressed position while compressing said compressible chamber and expelling liquid from said compressible chamber out said fluid discharge passageway as a pulsed liquid jet and to cause said latch means to be released from non-latching position, thereby permitting said latch means to assume the latching coNdition and retain said pressure cylinder in the middle, latched position.
Claim 2
Dependent Claim
435 words
Apparatus for forming pulsed jets of liquid comprising: a nozzle block having a fluid discharge passageway therethrough; a pressure cylinder cooperating with said nozzle block to define a compressible chamber in fluid communication with said nozzle block discharge passageway, said pressure cylinder being capable of assuming a middle, latched position relative to said nozzle block, a second, expanded position in which said compressible chamber is in an enlarged condition and a third, compressed position relative to said nozzle block in which said compressible chamber is in a compressed condition; one of said nozzle block and said pressure cylinder having a fluid inlet passageway therethrough communicating with said compressible chamber; bias means for urging said pressure cylinder to assume the second, expanded position; latch means capable of assuming a latching condition in which said latch means cooperates with said pressure cylinder to retain said pressure cylinder in the middle, latched position and of assuming a non-latching condition in which said pressure cylinder is free to assume the second, expanded position under the urging of said bias means; valve means connected to said fluid inlet pasageway and adapted for connection to a liquid source, said valve means capable of assuming a fill conditon in which liquid is permitted to flow from the liquid source through said valve means and said fluid inlet passageway to said compressible chamber and of assuming a closed position in which liquid is prevented from flowing through said valve means; impelling means for acting on said pressure cylinder to compress said compressible chamber; control means for controlling operation of said latch means, said valve means and said impelling means to cause in sequence: a. said latch means to assume the latching condition preventing said bias means from moving said pressure cylinder to the second, expanded position, said valve means to assume the fill condition, permitting liquid from the liquid source to pass through said valve means and said fluid inlet passageway to said compressible chamber; b. said latch means to assume the non-latching condition, permitting said bias means to move said pressure cylinder to the second, expanded position, said valve means to assume the closed condition, preventing liquid flow through said valve means; c. actuation of said impelling means to move said pressure cylinder to the third compressed position while compressing said compressible chamber and expelling liquid from said compressible chamber out said fluid discharge passageway as a pulsed liquid jet and to cause said latch means to be released from non-latching position, thereby permitting said latch means to assume the latching coNdition and retain said pressure cylinder in the middle, latched position.
Claim 3
Dependent Claim
101 words
Apparatus as claimed in claim 1 in which one of said nozzle block and said pressure cylinder has a vent passageway therethrough interconnecting said compressible chamber with the exterior of said apparatus and in which said apparatus further comprises valve means in said vent passageway having a first valve position in which fluid flow is permitted through said vent passageway, so that fluid from said compressible chamber is permitted to pass said valve means to be vented from said compressible chamber, and second position assumed upon compression of said compressible chamber, said second position preventing fluid flow through said vent passageway.
Claim 4
Dependent Claim
255 words
Apparatus for forming pulsed jets of liquid comprising: a nozzle block having a fluid discharge passageway therethrough; a pressure cylinder cooperating with said nozzle block to define a compressible chamber in fluid communication with said nozzle block discharge passageway, said pressure cylinder being capable of assuming a middle, latched position relative to said nozzle block, a second, expanded position in which said compressible chamber is in an enlarged condition and a third, compressed position relative to said nozzle block in which said compressible chamber is in a compressed condition; one of said nozzle block and said pressure cylinder having a fluid inlet passageway therethrough communicating with said compressible chamber; bias means for urging said pressure cylinder to assume the second, expanded position; latch means capable of assuming a latching condition in which said latch means cooperates with said pressure cylinder to retain said pressure cylinder in the middle latched position and of assuming a non-latching condition in which said pressure cylinder is free to assume the second, expanded position under the urging of said bias means; valve means connected to said fluid inlet passageway and adapted for connection to a liquid source, said valve means capable of assuming a fill condition in which liquid is permitted to flow from the liquid source through said valve means and said fluid inlet passageway to said compressible chamber and of assuming a closed position in which liquid is prevented from flowing through said valve means: impelling means for acting on said pressure cylinder to compress said compressible chamber.
Claim 5
Dependent Claim
255 words
Apparatus for forming pulsed jets of liquid comprising: a nozzle block having a fluid discharge passageway therethrough; a pressure cylinder cooperating with said nozzle block to define a compressible chamber in fluid communication with said nozzle block discharge passageway, said pressure cylinder being capable of assuming a middle, latched position relative to said nozzle block, a second, expanded position in which said compressible chamber is in an enlarged condition and a third, compressed position relative to said nozzle block in which said compressible chamber is in a compressed condition; one of said nozzle block and said pressure cylinder having a fluid inlet passageway therethrough communicating with said compressible chamber; bias means for urging said pressure cylinder to assume the second, expanded position; latch means capable of assuming a latching condition in which said latch means cooperates with said pressure cylinder to retain said pressure cylinder in the middle latched position and of assuming a non-latching condition in which said pressure cylinder is free to assume the second, expanded position under the urging of said bias means; valve means connected to said fluid inlet passageway and adapted for connection to a liquid source, said valve means capable of assuming a fill condition in which liquid is permitted to flow from the liquid source through said valve means and said fluid inlet passageway to said compressible chamber and of assuming a closed position in which liquid is prevented from flowing through said valve means: impelling means for acting on said pressure cylinder to compress said compressible chamber.
Claim 6
Dependent Claim
101 words
Apparatus as claimed in claim 3 in which one of said nozzle block and said pressure cylinder has a vent passageway therethrough interconnecting said compressible chamber with the exterior of said apparatus and in which said apparatus further comprises valve means in said vent passageway having a first valve position in which fluid flow is permitted through said vent passageway, so that fluid from said compressible chamber is permitted to pass said valve means to be vented from said compressible chamber, and second position assumed upon compression of said compressible chamber, said second position preventing fluid flow through said vent passageway.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |