Patent US3729137A successfully refreshed from Google Patents.
US3729137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanically actuated water cannon
Assignee: Caterpillar Inc
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Filing: 1971-04-12
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Granted: 1973-04-24
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Expires: 1991-04-12
Abstract
Abstract An apparatus for creating high velocity jets of liquid for fracturing rock and like materials, said apparatus utilizing massive rotary flywheels for storing large amounts of kinetic energy. The kinetic energy is then delivered by a crank and link mechanism to a piston which forces quantities of liquid from a chamber through a nozzle at sufficient velocity to fracture selected materials.
Inventors
- 👤 D Cobb
- 👤 R Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:07
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9206; E02F5/00; E02F5/30; E02F5/305; E02F5/32; E02F5/323; E21; E21C; E21C25/00; E21C25/60
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
72 words
An apparatus for generating a high pressure jet of liquid, said apparatus comprising: means for storing a substantial amount of inertial energy; a cylindrical chamber for containing a charge of liquid; a nozzle in communication with said chamber; a piston reciprocally mounted in said chamber; and, means comprising a crank and connecting rod for applying said inertial energy to said piston to thereby extrude said liquid from said chamber through said nozzle.
Claim 2
Independent Claim
72 words
An apparatus for generating a high pressure jet of liquid, said apparatus comprising: means for storing a substantial amount of inertial energy; a cylindrical chamber for containing a charge of liquid; a nozzle in communication with said chamber; a piston reciprocally mounted in said chamber; and, means comprising a crank and connecting rod for applying said inertial energy to said piston to thereby extrude said liquid from said chamber through said nozzle.
Claim 3
Dependent Claim
16 words
The apparatus of claim 1 wherein said means for storing inertial energy comprises a rotatable flywheel.
Claim 4
Dependent Claim
26 words
The apparatus of claim 1 wherein said connecting rod is connected to a ram; and, said ram being reciprocally mounted for intermittent engagement with said piston.
Claim 5
Dependent Claim
19 words
The apparatus of claim 1 wherein said crankshaft is mounted to permit rebound thereof with respect to said nozzle.
Claim 6
Dependent Claim
31 words
The apparatus of claim 1 wherein said chamber includes a reduced portion; and, said piston includes a portion extending into said reduced portion during extrusion of said liquid from said nozzle.
Claim 7
Independent Claim
107 words
An apparatus for creating a high pressure water jet, said apparatus comprising: support means for supporting and positioning said apparatus from a mobile vehicle; a crankshaft rotatably mounted on said support means; a flywheel supported for rotation with said crankshaft; a motor operatively connected for driving said crankshaft; a cylindrical chamber for containing a charge of water; a source of water for said chamber; a nozzle in communication with said chamber; a ram mounted in said chamber; and, a link connecting said crankshaft to said ram and operative to force said ram against said charge of water to force same from said nozzle at a high velocity.
Claim 8
Independent Claim
107 words
An apparatus for creating a high pressure water jet, said apparatus comprising: support means for supporting and positioning said apparatus from a mobile vehicle; a crankshaft rotatably mounted on said support means; a flywheel supported for rotation with said crankshaft; a motor operatively connected for driving said crankshaft; a cylindrical chamber for containing a charge of water; a source of water for said chamber; a nozzle in communication with said chamber; a ram mounted in said chamber; and, a link connecting said crankshaft to said ram and operative to force said ram against said charge of water to force same from said nozzle at a high velocity.
Claim 9
Dependent Claim
17 words
The apparatus of claim 6 comprising means permitting said crankshaft to rebound with respect to said nozzle.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |