Patent · US Active

Axial thrust offloading device

US8266901B2 · kind B2 · utility

1Cited by

5References

2Claims

0Family size

Assignee

Voith Patent GmbH · DE

Inventors

Hans Schirle · Stimpfach, DE
Hartmut Graf · Neukirchen, DE
Michael Rosovits · Crailsheim, DE

Key dates

Filing date	Sep 12, 2008
Grant date	Sep 18, 2012
Priority date	—
Expiry date	Jul 20, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C32/0692
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

An axial thrust offloading device for axial thrust balance of a machine shaft including a thrust balance ring with a supply channel for a pressurized medium opening into an annular space on the ring's face, first and second side disks disposed axially adjacent to and on opposed sides of the ring and forming first and second pressure chambers closed off on an exit flow inside by a labyrinth seal and on an inlet flow side to a pressurized medium via first and second restrictor locations, and a disk-shaped restrictor element disposed in the annular space, wherein relative axial movement between the ring and the restrictor element provides for reciprocal opening of the first and second restrictor locations to form a pressure difference between the first and second chambers.

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