Portable transmission fluid exchanging system

Fluent material handling – with receiver or receiver coacting mea – Combined

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141 4, 141 65, 184 15, 184106, 134169C, B65B 104, B65B 304, B67C 302

Patent

active

054471842

ABSTRACT:
A portable fluid exchanger for flushing the used transmission fluid from a vehicle engine as it replaces it with new fluid is mounted on a wheeled undercarriage and contains a tank of new transmission fluid, hoses, and a 12-volt electrical system which connects to the battery of the vehicle being serviced to power a fluid delivery pump, an output and return flow control system, and means for visually checking the condition of the fluid being pumped from the transmission. The normal continuous-flow circulation system of the vehicle is interrupted by interposing the exchanger in a cooling line of the transmission system, and the vehicle's own pump is used to expel fluid from the transmission while the exchanger introduces new fluid, as the vehicle engine idles. The fluid level in the transmission is gauged by monitoring inflow and outflow to and from the transmission to insure that it remains reasonably full during the flushing process. Indicators and controls are provided both to ascertain the flow direction of the transmission fluid cooling pump, and to effectively reverse the coupling between the transmission and the exchanger without disconnecting the attachment lines, to synchronize flow direction of the exchanger pump with that of the vehicle pump.

REFERENCES:
patent: 2707453 (1955-05-01), Boyle
patent: 3513941 (1970-05-01), Becnel
patent: 4095673 (1978-06-01), Takeuchi
patent: 4193487 (1980-03-01), Takeuchi
patent: 5148785 (1992-09-01), Sendak
patent: 5291968 (1994-03-01), Brown
patent: 5318080 (1994-06-01), Viken

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