Patent ID: 6729364
Filing Date: 2004-05-04
Classification: B60S,F01M,Y10T

Abstract:
An apparatus for servicing an automobile fluid containing subsystem having a fluid reservoir with a subsystem pump and a subsystem inlet and a subsystem outlet, said apparatus comprising:a manifold defining an exhaust port for coupling to said subsystem inlet, a return port for coupling to said subsystem outlet, a fresh fluid port, and a used fluid port; a fluid transfer circuit at least partially formed within said manifold between said ports, said fluid transfer circuit includes a drain path for directing fluid entering said return port to said used fluid port, a bypass path for directing fluid entering said return port to said exhaust port, a supply path for directing fluid entering said fresh fluid port to said exhaust port, and a dump path for directing fluid entering said used fluid port to said exhaust port; a drain/bypass valve having a fluid receiving inlet in communication with said return port and a multi-directional outlet, said drain/bypass valve being selectively operable to place said return port in fluid communication with either said exhaust port or said used fluid port; a fresh fluid source coupled to said fresh fluid port; a common pump coupled to said manifold and interposed between said new and used fluid ports and said exhaust port for pumping a fluid from either of said fluid ports to said exhaust port; a dump/supply valve having a fluid expelling outlet in communication with said common pump and a multi-directional inlet, said dump/supply valve being selectively operable to place either of said used or new fluid ports in fluid communication with said exhaust port; and whereby, said exhaust port may be coupled to said subsystem inlet and said return port may be coupled to said subsystem outlet, then said subsystem pump activated and said common pump selectively operated to direct at least one fluid through said fluid transfer circuit between ports as determined by the selective operation of at least one of said valves.