Internal-combustion engines – Oscillating piston – Toroidal cylinder
Reexamination Certificate
2007-12-11
2007-12-11
Denion, Thomas (Department: 3748)
Internal-combustion engines
Oscillating piston
Toroidal cylinder
C123S01800A
Reexamination Certificate
active
11260953
ABSTRACT:
A rotary machine includes a housing divided into a first stationary portion and a second rotational portion. The second rotational portion is supported for rotation with respect to the stationary portion about an axis of the housing. The first and second portions of the housing cooperate to define a generally toroidal passage which is coaxial with the housing axis. A first piston and a second piston are disposed in the passage. Each piston has an interconnection mechanism for selectively interconnecting the piston to either the stationary portion or the rotational portion.
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Denion Thomas
Duff Douglas J.
Gifford Krass Sprinkle Anderson & Citkowski P.C.
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