Nikolay Shkolnik - West Hartford CT,
Alexander C. Shkolnik - Cambridge MA,
Stephen L. Nabours - Southwick MA,
Gnana Prakash Gnanam - Hartford CT,
David Collis Kieke - Austin TX,
Yehoram Hofman - Newport Coast CA,
LIQUIDPISTON, INC. - Bloomfield CT
A rotary internal combustion engine includes crank-driven gates to synchronously form chambers for the intake, compression, combustion, expansion and exhaust of a working medium during a high-efficiency hybrid engine cycle. A variety of rotor geometries and sealing apparatuses may work with a rotary engines in the execution of various engine cycles including, but not limited to, a high-efficiency hybrid engine cycle.