Patent · US Active

Mechanical seal arrangement having sliding surfaces of different hardness

US9841107B2 · kind B2 · utility

4Cited by

2References

20Claims

0Family size

Assignee

EagleBurgmann Germany GmbH & Co. KG · DE

Inventors

Joachim Otschik · Aschaffenburg, DE
Andreas Kretschmer · Geretsried, DE
Carsten Scholz · Eurasburg, DE
Rudolf Schicktanz · Wolfratshausen, DE
Andreas Schrufer · Wolfratshausen, DE

Key dates

Filing date	Mar 11, 2014
Grant date	Dec 12, 2017
Priority date	—
Expiry date	Jun 3, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J15/162
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a mechanical seal arrangement comprising: a rotating slide ring (2) having a first slide surface and a stationary slide ring (3) with a second slide surface which between them define a sealing gap 4, wherein the first and second slide surfaces have different hardnesses, wherein the harder slide surface has a diamond coating (20) and the softer slide surface is produced from carbon composite material, and wherein an average initial roughness Ra1 (of the diamond coating 20) is less than an average initial roughness Ra2 of the slide surface made from carbon composite material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.