Patent ID: 6503071
Filing Date: 2003-01-07
Classification: F01C

Abstract:
A single vane displacement apparatus comprising:A) a stator housing having a right cylindrical bore therethrough, said bore having a preselected diameter, a preselected longitudinal axis, and a generally continuous inner surface curved concentrically around said longitudinal axis; B) first and second stator end plate means attached to said housing at each end of said circular bore to define an enclosed space within said housing having a preselected longitudinal length; C) first and second spaced apart rotor shaft elements eccentrically positioned in said bore and respectively supported by bearing means in said first and second stator end plate means for rotation about a rotor axis parallel to but spaced from said longitudinal axis a preselected distance; D) a right cylindrically-shaped rotor positioned eccentrically within said bore and having first and second axial ends respectively connected to said first and second spaced apart rotor shaft elements for rotation therewith about said rotor axis, said rotor having (i) a preselected diameter, (ii) a longitudinal length preselected to be substantially the same as said preselected longitudinal length of said enclosed space within said bore, and (iii) a radially-extending slot having a preselected slot width, said slot having (a) an outer portion extending from the outer periphery of said rotor radially inward a first preselected distance and also extending longitudinally between said first and second axial ends of said rotor; and (b) an inner pocket portion integral with and radially aligned with said outer portion and extending radially a preselected distance beyond said rotor axis, said inner pocket portion being axially spaced from said first and second axial ends of said rotor; E) first and second anti-friction radial vane guide assemblies each comprising an outer race having a preselected diameter, an inner race concentrically and rotatably mounted within said outer race, said first and second assemblies being respectively rotatably mounted in said first and second end plate means with the rotational axes thereof being concentric with said preselected longitudinal axis of said stator housing; F) attachment means connected to one of the races of said first and second vane guide assemblies; G) a T-shaped unitary vane positioned in said radially aligned outer and inner pocket portions of said radially extending rotor slot for relative radial movement therewith and having a preselected thickness to permit said vane to slidably and radially move within said rotor slot, said vane having i) an outer portion having a) a generally rectangular shape with a longitudinal length preselected to be essentially the same as said longitudinal length of said rotor; and b) an outer tip surface; and ii) an inner portion sized to slidably fit into said inner pocket portion of said radially extending slot, and said vane further being rotatably connected to said attachment means of said vane guide assemblies and being positioned within said rotor slot with said outer tip surface thereof being adjacent to said inner surface of said bore in a non-contacting but sealing relationship; H) gas inlet means and gas outlet means mounted on said housing and respectively positioned on opposite sides of a plane defined by said longitudinal and rotor axes; I) means for rotating said assembled rotor and vane about said rotor axis relative to said housing; and J) said vane being further characterized by having a preselected center of gravity located proximate to said stator longitudinal axis.