Patent ID: 8702681

Claim:
A valve comprising: a valve body having a first end, a second end, a longitudinal axis extending between the first end and the second end, and a track having an inclined sliding surface disposed at an angle to the longitudinal axis and having a longitudinal slot therein, the longitudinal slot disposed about a plane containing the longitudinal axis of the valve body and the inclined sliding surface disposed in a plane intersecting the longitudinal axis; a tubular member having walls defining a passageway extending through the valve body from the first end to the second end; and a slidable member mounted on the track for movement along the inclined sliding surface of the valve body and moveable between a first position and a second position, wherein the first position is a first distance from the longitudinal axis and the second position is a second distance from the longitudinal axis, the first distance being different than the second distance, wherein the slidable member is adapted to urge walls of the tubular member towards mutual contact when moved along the inclined sliding surface from the first position to the second position.