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:
Feb. 21, 2012
Filed:
Dec. 12, 2008
Applicant:
John Mcintyre, Traverse City, MI (US);
Inventor:
John McIntyre, Traverse City, MI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 19/00 (2006.01); F04C 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A rotary pump device includes a stator chamber with a cylindrical inner wall having intake and exhaust ports therein, and a two-part, expanding rotor eccentrically mounted for rotation within the chamber. The rotor comprises two crescentoid bodies with end surfaces in sliding, mating contact. A spring rod is placed between the inner rotor body surfaces to maintain rotor contact points in continuous wiping contact with the chamber wall. A full intake/exhaust cycle occurs every 180° of rotor travel.