Filters for heavy duty internal combustion engines

Details Filters for heavy duty internal combustion engines Filters for heavy duty internal combustion engines

1991-11-25

1993-03-30

Dawson, Robert A.

Liquid purification or separation

With repair or assembling means

210338, 210342, 210450, 210457, 210484, 2104932, 210504, B01D 2706

Patent

active

051981076

ABSTRACT:
An oil filter for use in heavy duty internal combustion engines is disclosed herein. The oil filter includes an exterior tube with perforations, an interior tube with perforations, a spring located inside the interior tube, a lower and an upper end cap attached to first and second ends of the exterior and interior perforated tubes, respectively, and two pleated layers of filter media concentrically located between the interior and exterior perforated tubes without any stabilizing means located between the layers of filter media. The two layers of filter media are formed of a substantial portion of pulp of fibers that contain lignin to reduce softening and swelling of the filter media upon contact with water.

REFERENCES:
patent: 2008892 (1935-07-01), Asplund
patent: 3361260 (1968-01-01), Buckman
patent: 3368687 (1968-02-01), Ruschman
patent: 3370708 (1968-02-01), Hultgren et al.
patent: 3827566 (1974-08-01), Ponce
patent: 4455195 (1984-06-01), Kinsley
patent: 4455237 (1984-06-01), Kinsley
patent: 4655939 (1987-04-01), Moser

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