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:
May. 07, 2019
Filed:
May. 19, 2016
Danfoss Commercial Compressors, Trevoux, FR;
Arnaud Daussin, Saint Germain au Mont d'or, FR;
Patrice Bonnefoi, Saint Didier au Mont d'or, FR;
Yves Rosson, Villars les Dombes, FR;
Nicolas Nouyrigat, Lyons, FR;
Danfoss Commercial Compressors, Trevoux, FR;
Abstract
The fluid machine includes a stationary member (), a rotary member () and a labyrinth seal () including a succession of stationary steps () formed on the stationary member (), and a succession of rotary steps () formed on the rotary member (). The labyrinth seal () further includes a plurality of stationary recesses () each formed in a radial wall portion () of a respective stationary step (), and a plurality of rotary recesses () each formed in a radial wall portion () of a respective rotary step (). Each stationary step () defines a stationary projection () delimited by the stationary recess () formed on said stationary step (), and each rotary step () defines a rotary projection () delimited by the rotary recess () formed on said rotary step (). The axial width (Wr) of each of the stationary recesses () and of the rotary recesses () substantially equals the axial width (Wp) of each of the stationary projections () and of the rotary projections ().