One-piece steel piston

Details One-piece steel piston One-piece steel piston

2006-09-12

2006-09-12

Lopez, F. Daniel (Department: 3745)

Expansible chamber devices

Piston

With ported chamber in piston part for circulating heat...

C029S888040

Reexamination Certificate

active

07104183

ABSTRACT:
A one-piece steel piston that is made from a piston blank that includes a portion that configured and designed to be displaced to form a cooling gallery and ring belt. The piston blank can be formed by a casting or forging process. The portion that is designed and configured to be displaced is a flange that extends radially at the top of the piston blank. The flange is bent downward so that a peripheral edge of the flange contacts a top portion of the piston skirt. The peripheral edge of the flange and the top portion of the skirt can be welded together or provided with inter-engaging structures.

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patent: WO 01/50042 (2001-07-01), None

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