Patent ID: 7341040

Claim:
A method for controlling the movements of a reciprocating shuttle inlet valve for an engine operating on the two-stroke cycle, comprising, a cylinder, said cylinder having a piston reciprocating within said cylinder, an exhaust port formed in said cylinder, an inlet port formed in said cylinder, a reciprocating shuttle inlet valve arranged to reciprocate on the outside of said cylinder, with at least one projection formed as an integral part of said reciprocating shuttle inlet valve, with at least one said projection projecting radially inward, passing through at least one aligning slot formed in said cylinder, with at least one said projection occupying a space within at least one groove, channel or void formed in the skirt of said piston, with means to avoid contact of said one least projection and said one least groove, channel or void, with means to permit at least one said projection to make contact with at least one abutment formed at the ends of at least one said groove, channel or void, causing contact of at least one said projection and of at least one said abutment, to axially reciprocate said reciprocating shuttle inlet valve, to either cover or uncover said inlet port, as said piston reciprocates within said cylinder.