Expansible chamber devices – Piston – Open-ended hollow skirt type
Reexamination Certificate
2008-08-12
2011-10-25
Lazo, Thomas E (Department: 3745)
Expansible chamber devices
Piston
Open-ended hollow skirt type
C092S160000, C092S235000
Reexamination Certificate
active
08042453
ABSTRACT:
A piston has a pair of diametrically opposite skirt portions each having an opening providing fluid communication between an outer surface of the skirt portions and an internal cavity. The openings provide the outer surfaces of the skirt portions with a circumferentially extending upper band portion above a horizontal plane extending through a pin bore axis and a circumferentially extending lower band portion below the horizontal plane.
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Dickinson Wright PLLC
Federal-Mogul Corporation
Lazo Thomas E
Stearns Robert L.
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