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US3958296A Expired / Lapsed US ⏱️ 0.0 years remaining

Air filter cleaner

Assignee: Individual
•
Filing: 1975-02-19
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Granted: 1976-05-25
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Expires: 1995-02-19
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Abstract

Abstract An air filter cleaner is disclosed which is portable and which may be used on the job site for the cleaning of air filters of heavy construction equipment. The air filter cleaner is lightweight and may easily be carried or moved by a single person. The filter is comprised of a base member and an upper member. The filter to be cleaned is inserted between the base member and the upper member. The upper member is provided with a vertically depending rotatable pipe means provided with radially directed nozzles. The pipe means is also provided with a pair of nozzles directed at an angle to the radial to provide a rotary movement to the pipe means. The air filter cleaner may be operated from air compressors readily available on the job site, such as compressors on the heavy construction equipment itself, during normally scheduled down times such as lunch hours. The purpose of the above abstract is to provide a nonlegal technical statement of the disclosure of the contents of the instant patent application and thus serve as a searching-scanning tool for scientists, engineers and researchers. Accordingly, this abstract is not intended to be used in understanding or otherwise comprehending the principles of the present invention hereinafter described in detail, nor is it intended to be used in interpreting or in any way limiting the scope or fair meaning of the claims appended hereto.

Inventors

  • 👤 Albert J. Fell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 20:16
CPC Classifications
B; B01; B01D; B01D41/00; B01D41/04; B08; B08B; B08B5/00; B08B5/02

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 277 words
A portable air filter cleaner for cleaning an annular air filter, comprising: a first closure member having a continuous surface defined within an outer periphery for supporting one end of the annular shaped air filter to be cleaned, said first member being provided for substantially sealing said one end of the annular shaped air filter during cleaning; a second closure member having a substantially continuous surface defined within an outer periphery being mountable over the annular shaped filter to be cleaned, said second member being provided for substantially sealing the other end of the annular shaped filter during cleaning; pipe means rotatably mounted substantially perpendicular to said second member by a rotatable sealed joint and terminating near said first member at a free end thereof, said pipe means being mounted on said second member so that it is substantially centrally located in the filter during cleaning, said pipe means being provided with a plurality of radially extending nozzles substantially equally spaced about the periphery of said pipe means, and spaced along said pipe means and at least one nozzle extending outwardly from the pipe means and including an outer portion extending at an angle to a radial in the plane formed by revolution to a radial about said pipe means to cause said pipe means to rotate; a rotation stabilizing means mounted on said first member for receiving the free end of said pipe means and stabilizing its rotation; means for connecting compressed air to said pipe means through said second closure member; and means for connecting said first member and said second member for contact with opposed open ends of the air filter to be cleaned.
Claim 2
Dependent Claim 277 words
A portable air filter cleaner for cleaning an annular air filter, comprising: a first closure member having a continuous surface defined within an outer periphery for supporting one end of the annular shaped air filter to be cleaned, said first member being provided for substantially sealing said one end of the annular shaped air filter during cleaning; a second closure member having a substantially continuous surface defined within an outer periphery being mountable over the annular shaped filter to be cleaned, said second member being provided for substantially sealing the other end of the annular shaped filter during cleaning; pipe means rotatably mounted substantially perpendicular to said second member by a rotatable sealed joint and terminating near said first member at a free end thereof, said pipe means being mounted on said second member so that it is substantially centrally located in the filter during cleaning, said pipe means being provided with a plurality of radially extending nozzles substantially equally spaced about the periphery of said pipe means, and spaced along said pipe means and at least one nozzle extending outwardly from the pipe means and including an outer portion extending at an angle to a radial in the plane formed by revolution to a radial about said pipe means to cause said pipe means to rotate; a rotation stabilizing means mounted on said first member for receiving the free end of said pipe means and stabilizing its rotation; means for connecting compressed air to said pipe means through said second closure member; and means for connecting said first member and said second member for contact with opposed open ends of the air filter to be cleaned.
Claim 3
Dependent Claim 36 words
A portable air filter cleaner in accordance with claim 1 including resilient annular seals mounted to said first closure member and said upper member for providing a sealed contact with an air filter to be cleaned.
Claim 4
Dependent Claim 29 words
A portable air filter cleaner in accordance with claim 1 wherein said pipe means is provided with four radially directed nozzles mounted 90° apart on said rotatable pipe means.
Claim 5
Dependent Claim 49 words
A portable air filter cleaner in accordance with claim 1 wherein said pipe means is provided with a second nozzle directed at an angle to the radial in the plane formed by revolution of a radial and 180° away from said at least one nozzle on said pipe means.
Claim 6
Dependent Claim 42 words
A portable air filter cleaner in accordance with claim 1 wherein said connecting means includes at least two rod elements extending from said first closure member to said second closure member and provided with fastening means at one of said closure members.

References Cited (Backward Citations)

GB191116392A Cited
US2420822A Cited
US2591198A Cited
US3060663A Cited
US3360907A Cited
US3716968A Cited
US3568414A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-05-25 1979-11-24 1980-05-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-05-25 1983-11-24 1984-05-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-05-25 1987-11-24 1988-05-25 $7700.00 Window Closed / Lapsed

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