Irvin K Zwicker

US Patent:

61520160, Nov 28, 2000

Filed:

Jan 29, 1999

Appl. No.:

9/240263

Inventors:

Andreas Bahr - Toronto, CA
Irvin Zwicker - Rochester MI

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F01B 3110

US Classification:

92160

Abstract:

A piston is formed with one or more recesses or depressions on its underside as it is cast, molded or forged. The recesses are located adjacent the outer cylindrical wall of the piston head so that when a groove such as an oil ring groove is subsequently machined into the outer wall, the groove intersects and cuts into each recess. In this manner, oil drain ports are formed in the oil ring groove without the need for additional boring or cutting operations.

Address:

13339 Neal Rd, Davisburg, MI 48350

VIN:

1J8FT48W88D682673

Make:

JEEP

Model:

PATRIOT

Year:

2008