Patent DE474027C successfully refreshed from Google Patents.
US3688511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for flush-jet embedding structural elements and for sucking off ground material
Assignee: Individual
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Filing: 1970-07-08
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Granted: 1972-09-05
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Expires: 1990-07-08
Abstract
Abstract The method of the invention consists in directing a jet of a mixture of water and air into the ground whereby the ground material is loosened and removed. A ditch is formed in this way and an element is laid into the ditch. The apparatus for performing this method has water jet pumps arranged at the side adapted to penetrate into the ground. The method and apparatus are especially suited for laying cables and pipes in a water bed.
Inventors
- 👤 Rudolf Harmstrof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:47
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9206; E02D; E02D7/00; E02D7/24; E02F3/9243; E02F3/925; E02F5/00; E02F5/02; E02F5/10; E02F5/104; E02F5/106; E02F5/107; E02F5/108; F; F04; F04F; F04F5/00; F04F5/02; F04F5/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
A method of flush-jetting a structural element such as a pipe or cable into the ground utilizing a jet formed of a combination of liquid and air comprising the steps of intermixing a jet of pressurized liquid with air under first pressure conditions, momentarily increasing the pressure of the flowing stream of intermixed liquid and air with respect to said first pressure to a second pressure to improve the intermixing of liquid and air, and accelerating the flowing stream and reducing the pressure thereof to a third pressure lower than said second pressure prior to impinging the mixture of liquid and air against the ground to be flush-jetted to loosen the ground and form a depression to receive the structural element.
Claim 2
Independent Claim
121 words
A method of flush-jetting a structural element such as a pipe or cable into the ground utilizing a jet formed of a combination of liquid and air comprising the steps of intermixing a jet of pressurized liquid with air under first pressure conditions, momentarily increasing the pressure of the flowing stream of intermixed liquid and air with respect to said first pressure to a second pressure to improve the intermixing of liquid and air, and accelerating the flowing stream and reducing the pressure thereof to a third pressure lower than said second pressure prior to impinging the mixture of liquid and air against the ground to be flush-jetted to loosen the ground and form a depression to receive the structural element.
Claim 3
Dependent Claim
51 words
A method of flush-jetting as in claim 1 including the step of rapidly changing the velocity and pressure of the flowing mixture of liquid and air prior to accelerating and reducing the pressure to said third pressure whereby pulses and vibrations are produced in the apparatus and resultant impinging jet stream.
Claim 4
Dependent Claim
130 words
Apparatus for laying a structural element such as a pipe or cable underground, particularly underwater, by flush-jetting a mixture of water and air comprising, in combination, embedding apparatus, a housing mounted on said embedding apparatus, an elongated mixing chamber defined in said housing having an inlet, an outlet, and an intermediate portion between said inlet and outlet, a nozzle mounted in said housing adjacent said inlet for introducing a jet of water into said chamber toward said outlet, a supply of pressurized water communicating with said nozzle, an air supply communicating with said chamber adjacent said inlet, said chamber intermediate portion including a plurality of axially spaced restrictions of varying cross-sectional dimension producing pressure pulses and vibrations in said housing, embedding apparatus, and in the jet ejected from said outlet.
Claim 5
Dependent Claim
130 words
Apparatus for laying a structural element such as a pipe or cable underground, particularly underwater, by flush-jetting a mixture of water and air comprising, in combination, embedding apparatus, a housing mounted on said embedding apparatus, an elongated mixing chamber defined in said housing having an inlet, an outlet, and an intermediate portion between said inlet and outlet, a nozzle mounted in said housing adjacent said inlet for introducing a jet of water into said chamber toward said outlet, a supply of pressurized water communicating with said nozzle, an air supply communicating with said chamber adjacent said inlet, said chamber intermediate portion including a plurality of axially spaced restrictions of varying cross-sectional dimension producing pressure pulses and vibrations in said housing, embedding apparatus, and in the jet ejected from said outlet.
Claim 6
Dependent Claim
169 words
Apparatus for laying a structural element such as a pipe or cable underground, particularly underwater, by flush-jetting a mixture of water and air comprising, in combination, embedding apparatus, a housing mounted on saiD embedding apparatus defining an elongated mixing chamber, a nozzle communicating with said mixing chamber adapted to jet a stream of water through said chamber, a pressurized water supply communicating with said nozzle, an air supply communicating with said mixing chamber intermixing air with said stream of water as water enters said mixing chamber, an outlet defined in said mixing chamber, said chamber being of increased diameter intermediate said nozzle and outlet whereby the pressure within the water stream momentarily increases prior to being reduced as the stream is ejected from said outlet into engagement with the ground to be loosened by flush-jetting, and at least one restriction defined in said chamber intermediate said nozzle and outlet producing a pulse in the jet stream ejected from said outlet and producing vibrations in said housing and embedding apparatus.
Claim 7
Dependent Claim
169 words
Apparatus for laying a structural element such as a pipe or cable underground, particularly underwater, by flush-jetting a mixture of water and air comprising, in combination, embedding apparatus, a housing mounted on saiD embedding apparatus defining an elongated mixing chamber, a nozzle communicating with said mixing chamber adapted to jet a stream of water through said chamber, a pressurized water supply communicating with said nozzle, an air supply communicating with said mixing chamber intermixing air with said stream of water as water enters said mixing chamber, an outlet defined in said mixing chamber, said chamber being of increased diameter intermediate said nozzle and outlet whereby the pressure within the water stream momentarily increases prior to being reduced as the stream is ejected from said outlet into engagement with the ground to be loosened by flush-jetting, and at least one restriction defined in said chamber intermediate said nozzle and outlet producing a pulse in the jet stream ejected from said outlet and producing vibrations in said housing and embedding apparatus.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |