Transmission fluid filter

Details Transmission fluid filter Transmission fluid filter

1981-07-20

1983-09-06

Therkorn, Ernest G.

Liquid purification or separation

Diverse distinct separators

Including a filter

210168, 210445, 210452, 210455, 210461, 210486, 210504, 210507, B01D 3908

Patent

active

044028270

ABSTRACT:
In the fluid circulation system of a transmission having a prespecified minimum operating temperature and a minimum fluid flow requirement for operation at the minimum operating temperature, a transmission fluid filter comprising a housing having a fluid inlet and outlet, and a filter element supported in the housing. The filter element is a composite assembly of a fine filtering medium such as a phenolic resin-impregnated felt having an opening therein, and a coarse filtering media such as polyester mesh secured over the opening so as to provide through the respective media parallel continuous fluid flow paths. The surface area ratio of coarse to fine filter media is the minimum ratio sufficient to permit minimum flow through the coarse filtering media at the prespecified minimum operating temperature.

REFERENCES:
patent: 2559267 (1951-07-01), Winslow
patent: 2850168 (1958-09-01), Nostrand
patent: 3023906 (1962-03-01), Moore
patent: 3384241 (1968-05-01), Nostrand
patent: 3406832 (1968-10-01), Ruschman
patent: 3497065 (1970-02-01), Johnson, Jr.
patent: 3504800 (1970-04-01), Niebergall
patent: 4056476 (1977-11-01), Mouwen et al.
patent: 4136011 (1979-01-01), Joseph et al.
patent: 4187136 (1980-02-01), Nostrand

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