US5409523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for the continuous degassing of casting resin
Assignee: Hedrich Wilhelm Vakuumanlagen GmbH and Co KG
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Filing: 1994-02-22
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Granted: 1995-04-25
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Expires: 2014-02-22
Abstract
Abstract A device and a method for the continuous degassing of casting resin comprising a housing (1) which has an inlet (2) and an outlet (3) for passage of the casting resin and is connected to a vacuum source (4). In order to achieve with a compact design of the housing a complete continuous degassing of the casting resin material, several separate but spatially connected areas (5) are provided in the housing (1), through which areas the casting resin is sequentially guided. A structure (6; 14; 16; 35) for applying the casting resin to a degassing surface (40) are provided in each of the areas. A stripping structure (7; 17; 35; 37) is provided in each of the areas for removing the casting resin from the degassing surfaces and simultaneously transferring the casting resin into the next adjacent area.
Inventors
- 👤 Erhard Haeuser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/80; B29B7/84; B29B7/845; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B29B7/86
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
217 words
A method for the continuous degassing of casting resin, comprising the steps of: creating and maintaining a pressure less than atmospheric pressure inside of a closed vessel having an inlet port and an outlet port and plural separated but spatially connected areas therein; feeding the casting resin to the inlet port so that casting resin is present inside said vessel and at least in a first of said areas; spreading the casting resin in a thin layer over a first degassing surface in said first area to cause any gas contained within the casting resin to surface and be removed from the vessel by reason of the maintaining of the negative pressure inside said vessel; and slidingly engaging the first degassing surface with a casting resin removing device to remove the casting resin from the first degassing surface and simultaneously effecting a transfer of the removed casting resin into a next adjacent one of the separate but spatially connected areas inside said vessel and, while the casting resin is in the next adjacent one of the areas, it is spread onto a further degassing surface therein so as to allow any gas contained within the casting resin to surface and be removed from said vessel by reason of the maintaining of the negative pressure inside said vessel.
Claim 2
Independent Claim
217 words
A method for the continuous degassing of casting resin, comprising the steps of: creating and maintaining a pressure less than atmospheric pressure inside of a closed vessel having an inlet port and an outlet port and plural separated but spatially connected areas therein; feeding the casting resin to the inlet port so that casting resin is present inside said vessel and at least in a first of said areas; spreading the casting resin in a thin layer over a first degassing surface in said first area to cause any gas contained within the casting resin to surface and be removed from the vessel by reason of the maintaining of the negative pressure inside said vessel; and slidingly engaging the first degassing surface with a casting resin removing device to remove the casting resin from the first degassing surface and simultaneously effecting a transfer of the removed casting resin into a next adjacent one of the separate but spatially connected areas inside said vessel and, while the casting resin is in the next adjacent one of the areas, it is spread onto a further degassing surface therein so as to allow any gas contained within the casting resin to surface and be removed from said vessel by reason of the maintaining of the negative pressure inside said vessel.
Claim 3
Dependent Claim
164 words
In a device for the continuous degassing of a casting resin comprising a hollow housing having an inlet port and an outlet port for facilitating a guiding of the casting resin therethrough, said housing including a connection means for providing a connection of an interior of said housing to a vacuum source, the improvement comprising means for dividing the interior of said housing into successive degassing areas, through which areas the casting resin is successively guided to facilitate degassing, means for defining a degassing surface in each of the successive degassing areas, applying means for applying the casting resin in each degassing area to the degassing surface, so that the casting resin is degassed while applied to the degassing surface, the gas emanating from the casting resin being exhausted from the housing by the vacuum source, and stripping means for slidingly engaging the degassing surface for removing casting resin from the degassing surfaces and means for transferring the casting resin to the following area.
Claim 4
Dependent Claim
164 words
In a device for the continuous degassing of a casting resin comprising a hollow housing having an inlet port and an outlet port for facilitating a guiding of the casting resin therethrough, said housing including a connection means for providing a connection of an interior of said housing to a vacuum source, the improvement comprising means for dividing the interior of said housing into successive degassing areas, through which areas the casting resin is successively guided to facilitate degassing, means for defining a degassing surface in each of the successive degassing areas, applying means for applying the casting resin in each degassing area to the degassing surface, so that the casting resin is degassed while applied to the degassing surface, the gas emanating from the casting resin being exhausted from the housing by the vacuum source, and stripping means for slidingly engaging the degassing surface for removing casting resin from the degassing surfaces and means for transferring the casting resin to the following area.
Claim 5
Dependent Claim
108 words
The device according to claim 2, wherein the housing comprises an upstanding cylinder with the inlet port being located adjacent an upper end of the upstanding cylinder and the outlet port being located adjacent a lower end, and wherein the means for dividing the interior of said housing into successive degassing areas includes plural movable pistons movable in said housing and each being in sealing and sliding engagement with an interior surface in the housing, each of the pistons having means defining an opening therein through which the casting resin can pass and support means for supporting said pistons for movement in a longitudinal direction of the housing.
Claim 6
Dependent Claim
18 words
The device according to claim 3, wherein the pistons form with the degassing surface an upwardly open trough.
Claim 7
Dependent Claim
18 words
The device according to claim 3, wherein the openings in the pistons are horizontally offset from one another.
Claim 8
Dependent Claim
19 words
The device according to claim 3, wherein the housing includes at least one level sensor in the lower end.
Claim 9
Dependent Claim
20 words
The device according to claim 3, wherein the support means includes a common piston rod for connecting the pistons together.
Claim 10
Dependent Claim
39 words
The device according to claim 7, wherein the piston rod includes means defining a pump piston at the lower end of the housing, the housing further including means defining a pump cylinder into which is received the pump piston.
Claim 11
Dependent Claim
32 words
The device according to claim 2, wherein the outlet port includes means defining a return pipeline connection into at least one of the degassing areas of the housing and a storage container.
Claim 12
Dependent Claim
84 words
The device according to claim 2, wherein the housing comprises a generally horizontally arranged cylinder having an inlet port and an outlet port located adjacent a lower end, wherein the means for dividing the interior of said housing into successive degassing areas includes threads of a screw rotatably supported in the housing, an outer contour of the screw being sealingly guided on the interior surface, and wherein a suction channel is arranged above the screw to facilitate the exhaust of gas from the housing.
Claim 13
Dependent Claim
80 words
The device according to claim 2, wherein the housing comprises an upstanding cylinder with the inlet port being located adjacent an upper end of the upstanding cylinder and the outlet port being located adjacent a lower end, and wherein the means for dividing the interior of said housing into successive degassing areas includes threads of a helical flight rotatably supported in the housing, an outer contour of the helical flight being sealingly guided on the interior surface in the housing.
Claim 14
Dependent Claim
13 words
The device according to claim 11, wherein the helical flights are reciprocally rotatable.
Claim 15
Dependent Claim
116 words
The device according to claim 2, wherein the housing comprises a substantially horizontally arranged cylinder having an inlet port and an outlet port located adjacent a lower end, wherein the means for dividing the interior of said housing into successive degassing areas includes several vertically upright partitions extending over a partial area of the cross-sectional height of the cylinder, wherein the means for dividing the interior of said housing into successive degassing areas further includes a plurality of plates each with a degassing surface thereon rotatable about a horizontal axis and guided with play in a respective one of the degassing areas, and wherein the stripping means is located adjacent an upper edge of each partition.
Claim 16
Dependent Claim
17 words
The device according to claim 13, wherein the plates are arranged on one common axle of rotation.
Claim 17
Dependent Claim
21 words
The device according to claim 2, wherein the device includes at least one of a heater device and a cooling device.
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) | 1998-04-24 | 1998-10-24 | 1999-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-24 | 2002-10-24 | 2003-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-24 | 2006-10-24 | 2007-04-25 | $7700.00 | Window Closed / Lapsed |