Patent ID: 8677971

Claim:
A pressure driven apparatus, having a rotational combustion cycle for imparting a force to a drive mechanism, comprising: a housing having a side wall; an intake chamber provided outside of said housing; a passageway provided between said intake chamber and said housing, said passageway opened for a period of time during the rotational combustion cycle, and closed for the remainder of the rotational cycle, allowing a fluid to flow from said intake chamber to said housing during only a portion of the rotational combustion cycle; a flexible membrane provided within said housing, dividing the interior of said housing into a plurality of chambers, said flexible membrane connected to the drive member; a rotatable intake cam assembly constantly contacting a portion of said flexible membrane, the rotation of said intake cam assembly forcing said flexible membrane to contact said side wall, resulting in the closure of said passageway for a portion of the rotational cycle, further rotation of said intake cam assembly resulting in said flexible membrane to move away from said side wall, allowing fluid to flow through said passageway into said housing for a portion of the rotational combustion cycle; and an exhaust port allowing exhaust gases to exit from said housing during a portion of the rotational combustion cycle, wherein movement of said flexible membrane imparts a force to the drive member, causing the drive member to move.