Patent · US Active

Frictionless shaft seal

US9322475B2 · kind B2 · utility

0Cited by

7References

18Claims

0Family size

Assignee

AB SKF · SE

Inventors

Jürgen Kurth · Odenthal, DE
Jürgen Netzer · Burscheid, DE
Wolfgang Irmen · Langenfeld, DE
Willy Seewald · Remscheid, DE

Key dates

Filing date	Jun 1, 2007
Grant date	Apr 26, 2016
Priority date	—
Expiry date	Mar 1, 2029

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16J15/3244
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A sealing element for sealing a shaft comprises a stiffening part, a first elastomer part connected to the stiffening part and adapted to adjoin the housing part and provide a static seal relative, and a second elastomer part of an elastomer material different from the elastomer material forming the first elastomer part. The second elastomer part is connected to the stiffening part and comprises a sealing section adapted to adjoin the shaft to seal a space. The sealing section comprises a return structure for returning a leaking fluid to a space to be sealed. The sealing section also comprises a region at one axial end portion of the sealing section which is peripherally closed in itself and extends along an inner surface of a circular cylinder portion of the sealing section that is adapted to adjoin and seal the shaft as the shaft is not turning.

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