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. 18, 1994
Filed:
Dec. 07, 1992
Fritz Spinnler, Mellingen, CH;
Aginfor AG fur Industrielle Forschung, Wettingen, CH;
Abstract
A displacement machine for compressible mediums has several spiral-shaped conveying spaces (11a, 11b), which are disposed in a stationary housing lead from an inlet (12a, 12b), which lies radially on the outside, to an outlet (13), which lies radially on the inside. A displacement body, which is assigned to the conveying spaces has a disk (2) with spiral-shaped strips (3a, 3b) arranged perpendicularly on both sides. This displacement body, driven off-centered, is made of a magnesium alloy. During service, each of its points effects a circular movement defined by the circumferential walls of the conveying space. The ribs (45, 46) bordering the conveying spaces (11a, 11b) in the housing are made as one piece with the housing and the entire housing is made of the same or similar magnesium-based alloy as the displacement body (2, 3, 4, 5).