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. 31, 2004
Filed:
Sep. 17, 2002
Applicant:
Inventors:
Drew Van Norman, Whitewater, WI (US);
Curt Hagen, Delvan, WI (US);
Assignee:
United Dominion Industries, Inc., Charlotte, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C 2/118 ; F04C 1/500 ;
U.S. Cl.
CPC ...
F04C 2/118 ; F04C 1/500 ;
Abstract
A rotary lobe pump includes two geared-together, counter-rotating shafts, to which are affixed rotors with interdigital lobes. Adjustment of the angular relationship of the rotors uses a clamping device within each rotor. The clamping device consists of a tapered, slotted bushing that is forced between a mating taper on the rotor and a locking device on the shaft by means of a flanged fastener mated to each pump shaft's threads.