Lubrication – Systems – With safety or indicating means
Patent
1989-09-18
1990-10-16
Davis, Jr., Albert W.
Lubrication
Systems
With safety or indicating means
184 612, 1841031, 1841043, 74467, 16510432, F01M 116, F01M 1112
Patent
active
049628305
ABSTRACT:
A system for use in connection with an automatic transmission of a motorized vehicle is disclosed. The system includes an accumulator which is sealed except for two openings therein. The accumulator is positioned above an operational fluid level of the transmission, with the openings pointing downward. One of the two openings couples to a high pressure fluid line, which extends between an automatic transmission and a heat exchanger. The other of the two openings couples to a low pressure fluid line, which extends between the automatic transmission and the heat exchanger. When the vehicle's motor operates, a pump within the automatic transmission pressurizes these two fluid lines and causes transmission fluid to fill the accumulator. When the vehicle's motor does not operate, the pump does not operate, and the fluid lines depressurize. The depressurizing causes fluid to drain from the accumulator and overfill the transmission. The overfilling of the transmission permits safe operation of the transmission while towing the vehicle. As soon as the vehicle is operated under its own power, excess fluid is again pumped into the accumulator.
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patent: 4751858 (1988-06-01), Iwatsuki
Davis Jr. Albert W.
Flickinger Don J.
Gresham Lowell W.
Meschkow Jordan M.
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