Patent · US Expired

Hydrodynamic brake

US6923301B2 · kind B2 · utility

2Cited by

8References

9Claims

0Family size

Assignee

Scania CV AB · SE

Inventors

Hans Jonsson · Uppsala, SE
Johnny Arne · Gately Drive, SE
Torger Hagen · Gately Drive, SE
Anders Kjell · Ekerö, SE

Key dates

Filing date	Jun 28, 2001
Grant date	Aug 2, 2005
Priority date	—
Expiry date	Jun 28, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D57/04
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A hydrodynamic brake, which comprises a stator and a rotor which are coaxial and have respective opposed annular recesses which open toward each other to form a toroid-shaped space. A first medium is supplied to the space for providing braking action during rotation of the rotor. At least one injection member is arranged to supply a second medium to the toroid-shaped space for reducing the circulation of air in the toroid-shaped space when no brake action is desired. The second medium is supplied at at least one location to the toroid-shaped space with a pressure and in a direction which at least partly is directed towards the principal flow direction of the circulating air.

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