Abstract: A peristaltic pump is disclosed having pump motor with a rotating motor shaft and a shaft axis; a peristaltic pump head rotatably mounted on the motor shaft; a raceway having a semi-circular track arranged around the pump head and coaxial with the shaft axis, wherein the track has a beveled edge at an entrance to the raceway to receive a tube loop being loaded into the pump; the pump head includes at least one roller orbiting the raceway and compressing the tube loop against said raceway, and a cartridge to which the tube loop is attached and mountable on the raceway.

Abstract: A variable valve control apparatus which is capable of reducing the size of the entire apparatus. A rotary member is assembled with a timing pulley by a bolt so that it rotates together with the timing pulley. A cylinder head supports the rotary member rotatably but axially immovably. The rotary member supports an intake camshaft rotatably and axially movably. Even if the intake camshaft is axially moved and changed in rotational phase relative to the timing pulley as arc-shaped gears move axially, the rotational phase between an exhaust camshaft and the timing pulley does not change.