United States Patent m
Grigorian et al.
US005791310A [ii] Patent Number: [45j Date of Patent:
 ADAPTER SYSTEM FOR ENGINE FLUSHING APPARATUS
 Inventors: Victor A. Grigorian, Glendale; Martin Renwick; Seymour Seplow. both of Sherman Oaks, all of Calif.
 Assignee: Envirolulion, Inc., Glendale. Calif.
 Appl. No.: 703,051
 Filed: Aug. 26, 1996
 Int. CI.6 F01M 11/04
 U.S. CI 123/196 A; 184/1.5
 Field of Search 123/196 A, 196 S;
 References Cited
U.S. PATENT DOCUMENTS
3.431,145 3/1969 Riley.
3,489,245 1/1970 Broadwell .
3,797,507 3/1974 Jackson .
4,951,784 8/1990 Bedi 123/196 A
5,048,578 9/1991 Dorfetal. .
5,063,896 11/1991 Hyatt etal. .
5,094,201 3/1992 Bedi 123/196 A
5,131,421 7/1992 Hofbauer.
5,168,844 12/1992 Waelput.
5,232,513 8/1993 Suratt et al. .
5,452,695 9/1995 Bedi 123/196 A
5,467,746 11/1995 Waelput et al 123/196 A
5.474,098 12/1995 Grigorian et al. .
5,526,782 6/1996 Bedi et al 123/196 A
5,566,781 10/1996 Robert et al 123/196 A
Primary Examiner—Erick R. Solis
Attorney, Agent, or Firm—Fulwider Patton Lee & Utecht, LLP
The adapter assemblies for an engine flushing system includes an oil filter port adapter assembly and an oil drain plug port adapter assembly for connection between an engine flushing apparatus and the lubrication system of an internal combustion engine. A plurality of adapter members of the oil filter adapter assembly are releasably secured together by a low tolerance sliding fit and indexed together by indexing pins in a low tolerance sliding fit. to prevent the connection between the adapter members from seizing up. In one embodiment, for a recessed, cartridge-type oil filter port accessible via the drain pan, the filter port adapter assembly comprises a first filter port adapter member, one end of which is placed within the filter port, and a second end of which is connected to the fluid supply conduit connected to the flushing apparatus. A second filter port adapter member having an internal passageway for receiving the second end of the first filter port adapter member is externally threaded to be connected within a correspondingly internally threaded opening of the drain pan.
17 Claims, 8 Drawing Sheets