Patent ID: 6179018
Filing Date: 2001-01-30
Classification: F01M,F16H

Abstract:
An apparatus for use in replacing fluid in an automatic transmission of a vehicle, wherein the transmission includes at least one line that is capable of being disconnected to present first and second points of connection, the apparatus comprising:a container defining an interior space;a bladder supported within the container and dividing the interior space into a replacement fluid compartment and a waste fluid compartment;a first conduit connected to the replacement fluid compartment of the container and adapted for connection to the automatic transmission at the first point of connection;a second conduit connected to the waste fluid compartment of the container and adapted for connection to the automatic transmission at the second point of connection, wherein the apparatus and the transmission form a closed system such that when the vehicle is operated, a positive pressure is generated in the transmission that circulates fluid within the transmission through the second conduit to the waste fluid compartment of the container, and the bladder is forced into the replacement fluid compartment, creating a positive pressure that moves fluid from the replacement fluid compartment into the transmissiona third conduit connected between the first and second conduits, and a control valve disposed in the third conduit and being movable between a first position in which flow through the first and second conduits bypasses the container and flows through the third conduit, and a second position in which flow through the first and second conduits bypasses the third conduit and flows through the container.