Internal-combustion engines – Particular piston and enclosing cylinder construction – Piston
Reexamination Certificate
2009-01-29
2011-12-20
Cuff, Michael (Department: 3783)
Internal-combustion engines
Particular piston and enclosing cylinder construction
Piston
C092S238000
Reexamination Certificate
active
08079341
ABSTRACT:
A piston for an internal combustion engine is disclosed. The piston body has two pin bores for receiving a piston pin. At least one rib is disposed on the second side and extends outwardly therefrom. The at least one rib is aligned laterally between the two pin bores in a direction along the piston pin axis. The at least one rib has a longitudinal axis extending generally perpendicular to both the reciprocation axis of the piston and the piston pin axis. A piston having a boss extending approximately within the piston pin radius of the piston pin axis, and a piston having a boss generally following the contour of the piston pin are also disclosed. An engine having the piston is also disclosed.
REFERENCES:
patent: 2100719 (1937-11-01), Nelson
patent: 2607643 (1952-08-01), Townhill
patent: 5146883 (1992-09-01), Reipert et al.
Dettori Franco
Glinsner Karl
Olejniczak Martin
BRP-Powertrain GmbH & Co. KG.
Cuff Michael
Kim James
Osler Hoskin & Harcourt LLP
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