Liquid purification or separation – Combined
Patent
1992-06-22
1994-08-30
Cintins, Ivars
Liquid purification or separation
Combined
175315, 210411, 210422, 210426, B01D 3502
Patent
active
053425200
ABSTRACT:
A filter having a filter element is provided for a rockdrill. The filter can be operated in three modes, namely, filtering or drilling, rinsing and back-flushing. As the filter element becomes clogged a handle on the filter can be turned to a back-flushing mode position whereby the flow of fluid through the filter element is reversed and the flow of fluid thereby expels dirt and debris accumulated in and on the filter element to the atmosphere through the a outlet port. When the handle is turned back to a filtering mode position ports in a support shaft in the filter pass through the rinsing mode which washes dirt that may have accumulated on the filter element during the back-flushing mode and expels it to the atmosphere through the vent outlet port. When the handle is positioned in the filtering mode position the filter element is clean.
REFERENCES:
patent: 603834 (1898-05-01), Sprague
patent: 1438983 (1922-12-01), Collin
patent: 4869817 (1989-09-01), Mendoza et al.
patent: 5020610 (1991-06-01), Lyon et al.
Cintins Ivars
Ingersoll-Rand Company
Selko John J.
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