Oil filtration method and element of wound cotton/paper composit

Details Oil filtration method and element of wound cotton/paper composit Oil filtration method and element of wound cotton/paper composit

1995-01-10

1996-09-03

Drodge, Joseph W.

Liquid purification or separation

Processes

Separating

2104941, 2104971, 2105001, B01D 3918, B01D 2706

Patent

active

055520650

ABSTRACT:
A method of filtering internal combustion and industrial engine oil includes providing a specially wound filter element in a canister and passing the liquid through it slowly (e.g., 1-2 quarts per minute). The filter element includes a length of cotton/cellulose paper composition yard wound on a core in an irregular winding pattern such that some layers filter smaller (e.g., 1 micron) particles and others further from the core filter larger (e.g., 5 micron) particles. A filter element constructed according to the invention includes a core having a hollow interior, a perforated outer surface in fluid communication with the hollow interior, an open first end in fluid communication with the hollow interior, and a closed second end. A length of yarn of cotton and cellulose paper composition is wound in a series of layers over the outer surface of the core in the irregular winding pattern such that some layers closer the core filter particles down to a smaller size than do other layers further from the core. A layer of filter material is provided between the winding and the outer surface of the core to trap any paper and cotton particles breaking free from the yarn.

REFERENCES:
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patent: 3648846 (1972-03-01), Sicard
patent: 4187136 (1980-02-01), Nostrand
patent: 4225442 (1980-09-01), Tremblay et al.
patent: 4655939 (1987-04-01), Moser
patent: 4660779 (1987-04-01), Nemesi et al.
patent: 4751901 (1988-06-01), Moor
patent: 4801383 (1989-01-01), Hoffman et al.
patent: 4915837 (1991-04-01), Verity

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