Patent ID: 9366255
Filing Date: 2016-06-14
CPC Classification: F04C

Claim Text:
1. A scroll pump, comprising: a frame; a stationary plate scroll assembled and fixed relative to the frame, the stationary plate scroll comprising a stationary plate, and a stationary scroll blade projecting axially from the stationary plate in a direction parallel to a longitudinal axis of the scroll pump; an orbiting plate scroll comprising an orbiting plate, and an orbiting scroll blade projecting axially from the orbiting plate in a direction parallel to the longitudinal axis, and nested with the stationary scroll blade; at least one solid plastic tip seal interposed between an axial end of at least one of the stationary scroll blade and the orbiting scroll blade and the opposing one of the orbiting plate or the stationary plate; an eccentric drive mechanism assembled to and supported by the frame, the orbiting plate scroll being assembled to and supported by the eccentric drive mechanism, and the eccentric drive mechanism being operative to drive the orbiting plate scroll in an orbit about the longitudinal axis, wherein the frame, the stationary plate scroll, the orbiting plate scroll and the eccentric drive mechanism constitute respective parts of a pump head of the scroll pump, which are assembled to one another; and a threaded fastener that adjusts the distance, in the longitudinal direction, between the stationary plate and the orbiting plate while said parts of the pump head remain assembled to one another.