Internal-combustion engines – Rotary – With compression volume means in uninterrupted communication...
Reexamination Certificate
2006-10-10
2006-10-10
Richter, Sheldon J (Department: 3748)
Internal-combustion engines
Rotary
With compression volume means in uninterrupted communication...
C123S241000, C418S061200
Reexamination Certificate
active
07117840
ABSTRACT:
A rotary piston machine with a housing forming a prismatic cavity with a cavity wall. The cross section of the prismatic cavity is a cavity oval. A rotary piston is guided for rotary movement in the cavity. The rotary piston moves in consecutive intervals of motion from one blocking position to an adjacent end position. The rotary piston, during the consecutive intervals of motion rotates, in the same rotational direction, alternatingly about one of two different axes. A transmission arrangement transmits the rotary motion about two axes. When the rotary piston reaches a blocking position, there is an associated larger diameter cavity circular arc, in which the larger diameter piston circular arc was slidingly guided during the preceding interval of motion. To provide unambiguous kinematics of the system in this position, there is a device for temporarily providing, when said rotary piston has reached one of the blocking positions, reduced rotary speed of the rotary motion of said rotary piston about that one of the axes which is located in the center of curvature of the associated larger radius circular arc, as compared to the rotary speed about the other axis. Variable volume working chambers are defined between the wall of the cavity and the rotary piston. For sealing between these working chambers, sealing ledges with sealing surfaces are provided.
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Levitin Lev
Schapiro Boris
Fridman, Esq. Lawrence G.
Richter Sheldon J
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