US3563474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air filter wash device
Assignee: Individual
•
Filing: 1968-01-12
•
Granted: 1971-02-16
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Expires: 1988-01-12
Abstract
Abstract Apparatus for cleaning filter elements comprising a plurality of nozzles for spraying water mounted asymmetrically with respect to the filter element to provide an asymmetric spray pattern whereby optimum utilization of the available water supply is obtained.
Inventors
- 👤 Joseph William Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:51
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10; B05; B05B; B05B1/00; B05B1/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
In filter cleaning mechanisms for a rectangular gas filtering medium having a flat surface in a plane inclined with respect to the horizontal, the combination including header assembly means to be reciprocally moved in a horizontal direction parallel with the surface of the filtering medium, and means for connecting said header assembly means with a source of cleaning fluid during said reciprocal movement, said header assembly means also including nozzle means for directing a band of said cleaning fluid to the upper surface of the filtering medium extending across the entire surface between the upper and lower margins thereof and generally transverse to the direction of said reciprocal movement of the header assembly means, said band being narrow with respect to the height of said filtering medium, said nozzle means also including means for directing a greater concentration of fluid in said narrow band to areas of the filtering medium adjacent the upper margin of the filtering medium than to areas of the filtering medium lying therebelow.
Claim 2
Dependent Claim
167 words
In filter cleaning mechanisms for a rectangular gas filtering medium having a flat surface in a plane inclined with respect to the horizontal, the combination including header assembly means to be reciprocally moved in a horizontal direction parallel with the surface of the filtering medium, and means for connecting said header assembly means with a source of cleaning fluid during said reciprocal movement, said header assembly means also including nozzle means for directing a band of said cleaning fluid to the upper surface of the filtering medium extending across the entire surface between the upper and lower margins thereof and generally transverse to the direction of said reciprocal movement of the header assembly means, said band being narrow with respect to the height of said filtering medium, said nozzle means also including means for directing a greater concentration of fluid in said narrow band to areas of the filtering medium adjacent the upper margin of the filtering medium than to areas of the filtering medium lying therebelow.
Claim 3
Dependent Claim
42 words
The invention defined in claim 1, wherein said nozzle means includes an outlet orifice having an irregular cross section, whereby a greater amount of fluid is directed toward the end oF said narrow band adjacent the upper margin of the filtering medium.
Claim 4
Dependent Claim
51 words
The invention defined in claim 1, wherein said nozzle means includes at least two outlet orifices disposed in alignment transverse with respect to the direction of said reciprocal movement, the orifice disposed adjacent to the upper margin of the filtering medium being disposed closer to the surface thereof than another orifice.
Claim 5
Dependent Claim
28 words
The invention defined in claim 1, wherein said nozzle means includes a generally vertical header assembly provided with more than one nozzle for communicating with cleaning fluid supply.
Claim 6
Dependent Claim
101 words
In a system for cleaning filter elements having a header assembly, support structure for said header assembly and drive means for producing reciprocal movement of said header assembly across the surface of a filter element as defined in claim 4, the improvement comprising a series of more than one nozzle mounted on said vertical header assembly and communicating with a water supply, said series having at least one nozzle disposed in a spaced relationship with the filter so that the energy of impact and the concentration of water at the surface of the filter are described according to the following relationship:
Claim 7
Dependent Claim
83 words
In a system for cleaning filter elements having a header assembly, support structure for said header assembly and means for producing reciprocal movement across the surface of a filter element, drive said means adaptable to advance and to retard said header assembly in said support structure as defined in claim 4, the improvement comprising more than one nozzle whose apertures produce a spray pattern whose general characteristics of energy of impact and concentration are described in accordance with the formulas set out below:
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |