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:
Mar. 22, 1994
Filed:
Aug. 17, 1992
Applicant:
Inventor:
Uwe Grotz, Leinfelden-Echterdingen, DE;
Assignee:
Durr Dental GmbH & Co. KG, Bietigheim-Bissingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
415 556 ; 415 557 ; 415 591 ;
Abstract
A two-stage side-channel compressor has in the central portion of its rotor (24) vanes (64) forming a radial compressor stage which allow a first side-channel (44) placed radially outward to be connected to an intake (18) on the central axis of the casing without any increase in the dimensions of the casing and without any loss of pressure.