The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1995
Filed:
Jan. 24, 1994
Other;
Abstract
A positive displacement fluid machine comprises a body including a circular cylindrical cavity with two closed ends and two port openings respectively open to the two opposite halves of the cylindrical cavity respectively located on two opposite sides of a plane of symmetry, a vane assembly including a plurality of vanes disposed in a radially extending pattern from a central shaft rotatably and pivotally supporting the plurality of the vanes, which vane assembly is disposed within the circular cylindrical cavity in a coaxial relationship therebetween wherein the radial edges of the vanes slide on the circular cylindrical wall of the cylindrical cavity, and a cam follower-guide mechanism controlling separation angle between adjacent vanes in such a way that the separation angle between adjacent vanes increases from a minimum value to a maximum value in one of the two opposite halves of the cylindrical cavity and decreases from the maximum value to the minmum value in the other of the two opposite halves of the cylindrical cavity.