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:
Oct. 01, 1996
Filed:
Jun. 28, 1994
Thomas C Edwards, Rockledge, FL (US);
Other;
Abstract
A non-contact vane-type fluid-displacement machine includes a stator housing having an annular interior surface defining an interior bore and a rotor supported in an eccentric position in the interior bore of the stator housing relative to the annular interior surface thereof to undergo rotation relative to the stator housing about a central rotational axis. The rotor has a plurality of slots radially defined therein relative to the rotational axis. The machine also has a plurality of vanes disposed in the radial slots of the rotor. The vane is mounted to the rotor to undergo reciprocable movement in a radial direction relative to the rotational axis of the rotor such that an outer tip portion of the vane is maintained in a non-contacting substantially sealed relationship with the annular interior surface of the stator housing. Improved features of the machine, which relate to rotor and vane positioning, include a pair of thin compliant lubricous discs employed at opposite ends of the rotor, trepanned formations on the rotor end surfaces balancing the pressure on the vanes carried in slots of the rotor, and the vanes on the rotors being self-forming self-dimensioning composite assemblies.