US4545317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for treating the surfaces of structures and ships
Assignee: GKSS Forshungszentrum Geesthacht GmbH
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Filing: 1982-03-29
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Granted: 1985-10-08
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Expires: 2002-03-29
Abstract
Abstract A device for treating the surfaces of structures and ships, even under water, with a spray medium which cleans, preserves, or coats, and is sprayed onto the surface which is to be treated by way of a pressurized gas flow via an at least partially flexible conduit which leads to the work location and is provided with an outlet nozzle. The outlet nozzle, which is constructed as a Laval nozzle, is provided with a funnel-shaped nozzle adapter which has a longitudinally extending, parabolic inner chamber. A controllable shunt, capable of bypassing the spray medium source may be provided for the pressurized gas between the pressurized gas source and the line leading to the outlet nozzle so that the device can be used under water.
Inventors
- 👤 Uwe Richter
- 👤 Hans Kellershofen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:31
CPC Classifications
B; B63; B63B; B63B59/00; B63B59/06; B05; B05B; B05B17/00; B05B7/00; B05B7/14; B05B7/1481; B05B7/1486; B24; B24C; B24C7/00; B24C7/0046; B24C7/0069
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
160 words
A device for treating the surfaces of structures and ships, even under water, with a spray medium which cleans, preserves, or coats, and is sprayed onto the surface which is to be treated by means of a pressurized-gas flow, said device comprising in combination therewith: a source of pressurized gas; an at least partially flexible conduit, which is operatively connected to said source of pressurized gas and leads to a work location for conveying spray-medium-conducting pressurized gas thereto; an outlet nozzle, in the form of a Laval nozzle, provided at an end of said conduit remote from said source of pressurized gas; and an additional funnel-shaped nozzle adapter attached to said outlet nozzle for effecting delivery of said spray-medium-conducting pressurized gas to said surface which is to be treated; said nozzle adapter additionally having a longitudinally extending, parabolic inner chamber therein, said funnel-shaped nozzle adapter with the longitudinally extending, parabolic inner chamber having considerably higher effectiveness of the spray medium.
Claim 2
Independent Claim
160 words
A device for treating the surfaces of structures and ships, even under water, with a spray medium which cleans, preserves, or coats, and is sprayed onto the surface which is to be treated by means of a pressurized-gas flow, said device comprising in combination therewith: a source of pressurized gas; an at least partially flexible conduit, which is operatively connected to said source of pressurized gas and leads to a work location for conveying spray-medium-conducting pressurized gas thereto; an outlet nozzle, in the form of a Laval nozzle, provided at an end of said conduit remote from said source of pressurized gas; and an additional funnel-shaped nozzle adapter attached to said outlet nozzle for effecting delivery of said spray-medium-conducting pressurized gas to said surface which is to be treated; said nozzle adapter additionally having a longitudinally extending, parabolic inner chamber therein, said funnel-shaped nozzle adapter with the longitudinally extending, parabolic inner chamber having considerably higher effectiveness of the spray medium.
Claim 3
Dependent Claim
63 words
A device in combination according to claim 1, in which, for use of said device under water, the additional length of said additional funnel-shaped nozzle adapter corresponds essentially to the required working distance between said outlet nozzle and said surface which is to be treated, said additional length amounting to approximately 250 mm for said nozzle adapter having a 50 mm outlet diameter.
Claim 4
Dependent Claim
119 words
A device in combination according to claim 2, which includes a source of spray medium operatively associated therewith which is adapted to communicate with said at least partially flexible conduit, and an additional controllable shunt for pressurized gas, said shunt bypassing said source of spray medium, and being provided between said source of pressurized gas and said at least partially flexible conduit, said additional shunt being controlled in such a way that even during times without spray medium supply, said conduit the leads to an underwater work location and said nozzle can be kept dry and free of water due to a relatively small overpressure of pressurized gas conveyed thereto via said shunt to prevent water from entering therein.
Claim 5
Independent Claim
261 words
A device for treating the surfaces of structures and ships, even under water, with a spray medium which cleans, preserves, or coats, and is sprayed onto the surface which is to be treated by means of a pressurized-gas flow, said device comprising: a source of pressurized gas; an at least partially flexible conduit, which is operatively connected to said source of pressurized gas and leads to a work location for conveying spray-medium-conducting pressurized gas thereto; an outlet nozzle, in the form of a Laval nozzle, provided at an end of said conduit remote from said source of pressurized gas; a funnel-shaped nozzle adapter attached to said outlet nozzle for effecting delivery of said spray-medium-conducting pressurized gas to said surface which is to be treated; said nozzle adapter having a longitudinally extending, parabolic inner chamber, and furthermore, for use of said device under water, the length of said nozzle adapter corresponds essentially to the required working distance between said outlet nozzle and said surface which is to be treated, a source of spray medium which is adapted to communicate with said at least partially flexible conduit, and an additional controllable shunt for said pressurized gas, said shunt bypassing said source of spray medium, and being provided between said source of pressurized gas and said at least partially flexible conduit, said controllable shunt being provided with a control line which leads to said underwater work location, and with a pressure gauge which detects water pressure and keeps pressurized gas delivered by said shunt at a pressure which is greater than the water pressure.
Claim 6
Independent Claim
261 words
A device for treating the surfaces of structures and ships, even under water, with a spray medium which cleans, preserves, or coats, and is sprayed onto the surface which is to be treated by means of a pressurized-gas flow, said device comprising: a source of pressurized gas; an at least partially flexible conduit, which is operatively connected to said source of pressurized gas and leads to a work location for conveying spray-medium-conducting pressurized gas thereto; an outlet nozzle, in the form of a Laval nozzle, provided at an end of said conduit remote from said source of pressurized gas; a funnel-shaped nozzle adapter attached to said outlet nozzle for effecting delivery of said spray-medium-conducting pressurized gas to said surface which is to be treated; said nozzle adapter having a longitudinally extending, parabolic inner chamber, and furthermore, for use of said device under water, the length of said nozzle adapter corresponds essentially to the required working distance between said outlet nozzle and said surface which is to be treated, a source of spray medium which is adapted to communicate with said at least partially flexible conduit, and an additional controllable shunt for said pressurized gas, said shunt bypassing said source of spray medium, and being provided between said source of pressurized gas and said at least partially flexible conduit, said controllable shunt being provided with a control line which leads to said underwater work location, and with a pressure gauge which detects water pressure and keeps pressurized gas delivered by said shunt at a pressure which is greater than the water pressure.
Claim 7
Dependent Claim
35 words
A device according to claim 4, which includes, at said underwater work location for delivery of said spray medium, a remote control means which is operatively in communication with said at least partially flexible conduit.
Claim 8
Dependent Claim
179 words
In a device for treating the surfaces of structures and ships, even under water, with a spray medium which cleans, preserves, or coats, and is sprayed onto the surface which is to be treated by means of a pressurized-gas flow; said device including a source of pressured gas; an at least partially flexible conduit, which is operatively connected to said source of pressurized gas and leads to a work location for conveying spray-medium-conducting pressurized gas thereto; an outlet nozzle, in the form of a Laval nozzle, provided at an end of said conduit remote from said source of pressurized gas; the improvement in combination therewith comprising: an additional funnel-shaped nozzle adapter attached to said outlet nozzle for effecting delivery of said spray-medium-conducting pressurized gas to said surface which is to be treated; said additional nozzle adapter having a longitudinally extending, parabolic inner chamber therein, and furthermore, for use of said device under water, the length of said additional nozzle adapter corresponds essentially to the required working distance between said outlet nozzle and said surface which is to be treated.
Claim 9
Dependent Claim
179 words
In a device for treating the surfaces of structures and ships, even under water, with a spray medium which cleans, preserves, or coats, and is sprayed onto the surface which is to be treated by means of a pressurized-gas flow; said device including a source of pressured gas; an at least partially flexible conduit, which is operatively connected to said source of pressurized gas and leads to a work location for conveying spray-medium-conducting pressurized gas thereto; an outlet nozzle, in the form of a Laval nozzle, provided at an end of said conduit remote from said source of pressurized gas; the improvement in combination therewith comprising: an additional funnel-shaped nozzle adapter attached to said outlet nozzle for effecting delivery of said spray-medium-conducting pressurized gas to said surface which is to be treated; said additional nozzle adapter having a longitudinally extending, parabolic inner chamber therein, and furthermore, for use of said device under water, the length of said additional nozzle adapter corresponds essentially to the required working distance between said outlet nozzle and said surface which is to be treated.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-07 | 1989-04-08 | 1989-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-07 | 1993-04-08 | 1993-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-07 | 1997-04-08 | 1997-10-08 | $7700.00 | Window Closed / Lapsed |