Patent
1987-10-22
1988-11-15
Joyce, Harold
55467, 553852, B60H 306
Patent
active
047840480
ABSTRACT:
An air filtration system is disclosed in combination with a removably attachable enclosed cab for preferred use with an agricultural tractor towing a sprayer through an orchard. The enclosed cab has an air intake from the upward forward portion of the cab. The air intake opens to an intake plenum which passes along the tip of the cab defining a minimum vertical profile over the top of the cab. The air chest is mounted to the upper rear portion of the cab below the cap top and immediately overlying the cab rear window. Air passes down the forward portion of the air chest in the interstices between the forward and side walls of the air chest and the side of the filter pack. Air flow reversal occurs at the bottom of the interstitial passage with downwardly flowing air being deflected along the bottom of the air chest and then passing vertically upwardly. The air then passes upward through the filter pack through successive coarse, fine particle and charcoal mist filters to the top of the air chest. Outlet at the top of the air chest occurs with the exit flow of filtered air to a side cab plenum immediately behind the operator.
REFERENCES:
patent: 2537278 (1951-01-01), Patterson
patent: 3657942 (1972-04-01), Minnick, Jr.
patent: 4140047 (1979-02-01), Bowman et al.
patent: 4587890 (1986-05-01), Hurlburt
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