Patent ID: 7201134

Claim:
A parallel rotary internal combustion engine comprising: a male rotor, a female compression/combustion rotor, and a female separation rotor, all three rotors being coupled for synchronous rotation; at least one lobe projecting from said male rotor; at least one cavity formed in said female compression/combustion rotor and said female separation rotor, said at least one cavity being comprised of a larger main chamber and a smaller secondary chamber branching off from said main chamber; wherein when said male rotor, said female compression/combustion rotor and said female separation rotor rotate, said at least one lobe enters into and moves through said at least one cavity; wherein a shape of said at least one lobe is defined by a top with two distinct tips with a leading wall of said at least one lobe defined by a leading base of said at least one cavity; wherein a tailing wall of said at least one lobe is defined by a trailing base of said at least one cavity; wherein a shape of a leading wall of said main chamber is defined by a leading tip of said at least one lobe; wherein a trailing wall of said main chamber is defined by a trailing tip of said at least one lobe; wherein when, in the course of its rotation, said at least one lobe has entered into said at least one cavity with both of its said two distinct tips, said at least one lobe maintains constant contact with both the leading and trailing bases of said at least one cavity, and at least one of said two distinct lobe tips maintains contact with one of the walls of said main chamber, so that as long as both said two distinct tins arc within said at least one cavity, at least one of said two distinct tips is always in contact with a wall of said main chamber; wherein said secondary chamber branches off from said main chamber with an opening having a width less than a width of the tips of said at least one lobe; wherein a combustion chamber is formed in said female compression/combustion rotor; and wherein a compression zone is formed in said female separation rotor as a forward tip of said at least one lobe contacts a forward wall of said main chamber concurrent with the trailing tip of said at least one lobe contacting the tailing wall of said main chamber; and a means for igniting combustion fluids in said combustion chamber.