US6074448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for use in filtering separators
Assignee: Heimbach GmbH and Co KG
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Filing: 1998-04-10
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Granted: 2000-06-13
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Expires: 2018-04-10
Abstract
Abstract A device adapted to indicate the degree to which a filter is soiled is prded, for use in filtering separators of the type having bag-, pouch-, or cartridge-shaped filters. The device has a hose- or tube-shaped air conveyance section. The air conveyance section has at one end a surface contact fitting. An air conveyor is arranged in the air conveyance section. The air conveyor generates an air flow in at least one direction. A pressure gauge is associated with the air conveyance section. The pressure gauge senses and displays the pressure in the airflow. The air conveyance section is equipped with at least one of an air flow meter and an air volume meter with a display. The device is configured as a portable unit. Preferably, the device also includes a dedusting device. The dedusting device has a hose- or tube-shaped dedusting air conveyance duct. The dedusting air conveyance duct has at one end the aforementioned surface contact fitting. A valve is arranged in the dedusting air conveyance duct. The dedusting air conveyance duct has a compressed air connection on a side of the valve facing away from the surface contact fitting. The dedusting device preferably is also configured as a portable unit.
Inventors
- 👤 Peter Schulz
- 👤 Joachim Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/42; B01D46/44; B01D46/442; B01D46/02; B01D46/444; B01D46/446; B01D46/66; B01D46/70; B01D46/71; B01D2273/00; B01D2273/18
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
119 words
A device for use in filtering separators with bag-, pouch-, or cartridge-shaped filtering means, characterized by the following features: a) the device has a hose- or tube-shaped air conveyance section; b) the air conveyance section has at one end a surface contact fitting; c) an air conveyor, to generate an air flow in at least one direction, is arranged in the air conveyance section; d) a pressure gauge, to sense and display the pressure in the air flow, is associated with the air conveyance section; e) the air conveyance section is equipped with at least one of an air flow meter and an air volume meter with a display; and f) the device is configured as a portable unit.
Claim 2
Independent Claim
119 words
A device for use in filtering separators with bag-, pouch-, or cartridge-shaped filtering means, characterized by the following features: a) the device has a hose- or tube-shaped air conveyance section; b) the air conveyance section has at one end a surface contact fitting; c) an air conveyor, to generate an air flow in at least one direction, is arranged in the air conveyance section; d) a pressure gauge, to sense and display the pressure in the air flow, is associated with the air conveyance section; e) the air conveyance section is equipped with at least one of an air flow meter and an air volume meter with a display; and f) the device is configured as a portable unit.
Claim 3
Dependent Claim
21 words
The device as defined in claim 1, wherein the pressure gauge is arranged in the region of the surface contact fitting.
Claim 4
Dependent Claim
24 words
The device as defined in claim 1, wherein the air conveyance section has a setting device for setting a specific pressure or volume flow.
Claim 5
Dependent Claim
15 words
The device as defined in claim 1, further comprising at least one additional pressure gauge.
Claim 6
Dependent Claim
20 words
The device as defined in claim 1, wherein the air conveyor is configured as a fan or compressed air ejector.
Claim 7
Dependent Claim
28 words
The device as defined in claim 1, wherein the air conveyor is configured for generation of an air flow from the air conveyor toward the surface contact fitting.
Claim 8
Dependent Claim
22 words
The device as defined in claim 6, wherein the air conveyor is configured for generation of an air flow in both directions.
Claim 9
Dependent Claim
28 words
The device as defined in claim 1, wherein the air conveyor is configured for generation of an air flow from the surface contact fitting toward the air conveyor.
Claim 10
Dependent Claim
20 words
The device as defined in claim 7, wherein a dust detector with display is incorporated into the air conveyance section.
Claim 11
Dependent Claim
88 words
The device of claim 1, further comprising a dedusting device characterized by the following features: a) the dedusting device has a hose- or tube-shaped dedusting air conveyance duct; b) the dedusting air conveyance duct has at one end said surface contact fitting; c) a valve is arranged in the dedusting air conveyance duct; d) the dedusting air conveyance duct has a compressed air connection on a side of the valve facing away from the surface contact fitting; and e) the dedusting device is configured as a portable unit.
Claim 12
Dependent Claim
21 words
The device as defined in claim 10, wherein a compressed air reservoir is arranged between the compressed air connection and valve.
Claim 13
Dependent Claim
21 words
The device as defined in claim 11, wherein the compressed air reservoir can be closed off toward the compressed air connection.
Claim 14
Dependent Claim
26 words
The device as defined in claim 11, wherein the compressed air reservoir surrounds the dedusting air conveyance duct between the valve and the surface contact fitting.
Claim 15
Dependent Claim
16 words
The device as defined in claim 10, wherein the valve is configured as a diaphragm valve.
Claim 16
Dependent Claim
18 words
The device as defined in claim 10, wherein the valve has a magnetic actuator with adjustable opening time.
Claim 17
Dependent Claim
22 words
The device as defined in claim 10, wherein the air conveyance section and the dedusting air conveyance duct open into one another.
Claim 18
Dependent Claim
27 words
The device as defined in claim 16, wherein the air conveyance section and the dedusting air conveyance duct converge in the region of the surface contact fitting.
Claim 19
Dependent Claim
16 words
The device as defined in claim 16, wherein the air conveyance section has a shutoff valve.
Claim 20
Dependent Claim
18 words
The device as defined in claim 1, wherein the surface contact fitting is configured in a bell shape.
Claim 21
Dependent Claim
16 words
The device as defined in claim 1, wherein the surface contact fitting has end-surface sealing elements.
Claim 22
Dependent Claim
147 words
A portable device for in situ detecting the air permeability of a filter that is bag-, pouch- or cartridge-shaped while the filter is mounted to a filtering separator, said device comprising: a hose- or tub-shaped air conveyance section; a surface contact fitting located at one end of the air conveyance section and adapted to engage the filter while the filter remains mounted to the filtering separator, whereby the filter need not be removed in order to detect the air permeability thereof; an air conveyor adapted to generate an air flow in at least one direction, said air conveyor being arranged in the air conveyance section; a pressure gauge adapted to sense and display the pressure in the air flow, said pressure gauge being associated with the air conveyance section; and an air flow meter or air volume meter with a display, associated with said air conveyance section.
Claim 23
Dependent Claim
147 words
A portable device for in situ detecting the air permeability of a filter that is bag-, pouch- or cartridge-shaped while the filter is mounted to a filtering separator, said device comprising: a hose- or tub-shaped air conveyance section; a surface contact fitting located at one end of the air conveyance section and adapted to engage the filter while the filter remains mounted to the filtering separator, whereby the filter need not be removed in order to detect the air permeability thereof; an air conveyor adapted to generate an air flow in at least one direction, said air conveyor being arranged in the air conveyance section; a pressure gauge adapted to sense and display the pressure in the air flow, said pressure gauge being associated with the air conveyance section; and an air flow meter or air volume meter with a display, associated with said air conveyance section.
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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) | 2003-06-13 | 2003-12-13 | 2004-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-13 | 2007-12-13 | 2008-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-13 | 2011-12-13 | 2012-06-13 | $7700.00 | Window Closed / Lapsed |