US 2881854 A
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n l: sa I Z5 INVENTOR ATTORNEYS April 14, 1959 F. H. UHRE, JR
AIR PURIFIER Filed Dec. 12, 1956 United States Paten AIR PURIFIER Fred Henry Uehre, Jr., Brantford, Ontario, Canada Application December 12, 1956, Serial No. 627,870
1 Claim. (Cl. 1834.3)
The present invention relates to air purifiers, and more particularly to air purifiers for attachment to the fresh air inlets of internal combustion engine driven vehicles.
The primary object of the invention is to provide an air purifier to eliminate unpleasant odors, dirt, dust, and other foreign material from the air entering vehicles through the heating system, air conditioning system, or other fresh air inlets.
Another object of the invention is to provide an air purifier of the class described above in which the air purifying members are easily replaceable when no longer serviceable for the purpose designed.
A further object of the invention is to provide an air purifying apparatus of the class described above which is inexpensive to manufacture, easy to install, and which is quite effective in its action.
Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings, in which:
Figure 1 is an exploded perspective view of the invention.
Figure 2 is a vertical -cross-section through the invention, shown partly broken away for convenience of illustration.
Figure 3 is `an enlarged fragmentary horizontal crosssection taken along the line 33 of Figure 2, looking in the direction of the arrows.
Referring now to the drawings in detail wherein like reference characters indicate like parts throughout the several figures, the reference numeral indicates generally an air purifier constructed in accordance with the invention.
The air purifier 10 comprises a side wall 11, a second side wall 12 positioned in spaced parallel relation to the wall 11, a bottom wall 13 extending between and having its opposite ends, respectively, attached to the bottom ends of the side Walls 11 and 12.
The bottom wall 13 is provided with front and rear flanges 14 and 15, respectively. The side wall 11 is provided with front and rear flanges 16 and 17 on the front and rear edges, respectively, thereof, and the side wall 12 is provided with a front flange 18 and a rear flange (not shown) on its respective front and rear edges. An upper front cross bar 19 extends between the upper edges of the flanges 16 and 18, and an upper rear cross bar 20 extends between the upper rear flange 17 and the rear flange (not shown) on the side wall 12.
A central flange 21 extends upwardly from the medial portion of the `bottom wall 13 in spaced parallel relation to the flanges 14 and 15. A flange 22 is formed on the wall 11 extending vertically thereon in alignment with the flange 21 in spaced parallel relation to the flanges 16 and 17. A flange 23 is formed on the wall 12 and extends vertically in alignment with the flange 21 in spaced parallel relation to the flange 18 and the flange (not shown) on the wall 12 opposite the flange 17. The flanges 21, 22 and 23 divide the device into two trackways for reasons to be assigned.
The end of the purifier opposite the bottom Wall 13 is open and can be closed by means of a removable cover 24 having a depending peripheral flange 25 which engages over the cross bars 19 and 20 and the upper end portions of the walls 11 and 12. The cross bars 19 and 20 are provided with a plurality of outwardly vprojecting detents 26, and the flange 25 of the cover 24 is provided with a corresponding series of detent engaging sockets 27 which detachably secure the cover 24 to the purifier 10.
A generally rectangular dust filter 28 is formed of fiberglass, steel wool, copper turnings, or other suitable material covered by an open mesh screen 29 to form a filter package. The dust filter 28 is positioned within the air purifier 10 between the flanges 21, 22, 23 and the flanges 14, 16, 18, as best shown in Figure 2.
An air purifying filter 30 is formed of charcoal, reactivated carbon, or other suitable material and is enclosed in an open-Work mesh screen 31 of a generally rectangular shape. The air purifer 30 is positioned in the purifier 10 between the flanges 21, 22, 23, and the flanges 15, 17, and the rear flange of the wall 12. The arrangement of the dust filter 28 and the air purifier filter 30 is such that the air passes therethrough successively so that the `combined filtering action of the filter 28 and the filter 30 is effective on the air passing therethrough,
The air purifier 10 is mounted in the mouth of the air intake of a motor vehicle, the conduit of the heater, or in any air inlet to the vehicle so that air entering the vehicle will of necessity pass therethrough. Obviously, the air purifier 10 will not only remove dust, dirt, and foreign material of this type from the air passing therethrough, but will in addition remove foreign materials of the type which would be absorbed on the charcoal.
Having thus described the preferred embodiment of the invention, it should be understood that numerous structural modifications and adaptations may be resorted to without departing from the scope of the appended claim.
What is claimed is:
An air purifier for the fresh air intake of a motor vehicle comprising a generally rectangular open ended hollow housing having a pair of opposed side walls, a bottom wall and an open top, an inwardly extending peripheral flange integral with and adjacent one end of said housing, a second inwardly extending peripheral flange integral with and adjacent the other end of said housing, a third inwardly extending peripheral flange integral with said side and said bottom walls intermediate said first and said second flanges, a generally rectangular dust filter removably disposed intermediate and engaging against said first and said third flanges, a generally rectangular chemical purifying filter removably disposed intermediate and engaging against said second and said third flange, said dust filter being positioned in laterally spaced parallel relation to said chemical purifying filter so that air passing through said air purifier will move successively through said dust filter and said chemical purifying filter, a detachable cover for said open top of said housing and means on said housing for detachably securing said cover to said housing.
References Cited in the file of this patent UNITED STATES PATENTS 946,874 DeFinance Jan. 18, 1910 1,963,874 Stampe June 19, 1934 2,077,951 Myers Apr. 20, 1937 2,671,528 Gross Mar. 9, 1954 2,794,514 Risley lune 4, 1957