Internal-combustion engines – Two-cycle – Pump and cylinder adjacent
Reexamination Certificate
2011-08-30
2011-08-30
Cuff, Michael (Department: 3783)
Internal-combustion engines
Two-cycle
Pump and cylinder adjacent
C123S052200, C123S068000
Reexamination Certificate
active
08006656
ABSTRACT:
An engine has a crankshaft, rotating about a crankshaft axis of the engine. An expansion piston is slidably received within an expansion cylinder and operatively connected to the crankshaft such that the expansion piston reciprocates through an expansion stroke and an exhaust stroke of a four stroke cycle during a single rotation of the crankshaft. A compression piston is slidably received within a compression cylinder and operatively connected to the crankshaft such that the compression piston reciprocates through an intake stroke and a compression stroke of the same four stroke cycle during the same rotation of the crankshaft. A ratio of cylinder volumes from BDC to TDC for either one of the expansion cylinder and compression cylinder is fixed at substantially 26 to 1 or greater.
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Branyon David P.
Eubanks Jeremy D.
Cuff Michael
Fildes & Outland, P.C.
Nguyen Hung Q
Scuderi Group LLC
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