Patent ID: 6854437

Claim:
A rotary piston continuous flow positive and dynamic displacement multiple purpose multiple fluid capable expansible chamber device comprising: a hollow annular cylinder housing with a smooth inner surface; a shaft having a longitudinal rotational axis aligned to a center of said annular cylinder housing; a rotor mounted for rotation with said shaft; at least one piston mounted radially on said rotor for circular movement in said housing when said rotor is rotated, each said piston having a conformably shaped outer peripheral surface in relation to said cylinder housing said piston having a sloping back as an inclined plane that gradually ramps from surface of said rotor to top of said piston; an intake port through said housing to allow a working fluid to enter said hollow housing; at least one isolating valve conformably shaped and associated with a respective piston and said hollow cylinder housing pivotably connected at one end to said housing upstream and before said intake port, another end of said isolating valve being in sliding contact with said conformably shaped outer peripheral surface of said associated piston and said rotor following said conformably shaped surface; an accumulator area formed downstream of said valve starting at the downstream side of said intake port and ending at an initial seal point, said initial seal point formed at a point that said piston seals with said smooth inner surface of said hollow cylinder at the down stream end of said accumulator area and of said intake port; an exhaust port for the discharge of said working fluid from said housing, said exhaust port located downstream of said initial seal point said accumulator area and said intake port on the periphery of said annular cylinder and after said piston and fluid's function is completed.