Internal-combustion engines – Particular piston and enclosing cylinder construction – Piston
Reexamination Certificate
2007-12-25
2007-12-25
McMahon, Marguerite (Department: 3747)
Internal-combustion engines
Particular piston and enclosing cylinder construction
Piston
C092S217000, C092S220000
Reexamination Certificate
active
10568795
ABSTRACT:
The invention relates to a split piston for an internal combustion engine, comprising an upper piece, connected to a lower piece, by means of a screw connection. The screw connection comprises a tubular connector piece, mounted on the underside of the piston upper piece with an external thread, a spacer sleeve with an external and an internal thread and a support rib formed on the lower piece of the piston with an internal thread. The upper piece can thus be screwed to the lower piece, by means of the connector piece, the spacer sleeve and the support rib. The spacer sleeve acts as a compressing body and the connector piece as an extending body, to generate the mechanism tension necessary for fixing the screw connection.
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Collard & Roe P.C.
Mahle GmbH
McMahon Marguerite
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