Axial thrust bearing

Details Axial thrust bearing Axial thrust bearing

2003-07-05

2008-12-30

Hannon, Thomas R (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S368000

Reexamination Certificate

active

07470064

ABSTRACT:
An axial thrust bearing for axially supporting a rotating shaft of an exhaust gas turbocharger connected to a lubricating oil circuit includes a profiled annular bearing surface which contacts an essentially flat sliding surface, the bearing surface having a plurality of radially extending grooves which are open on the outside circumference, a plurality of coplanar flat trap surfaces located between respective pairs of adjacent grooves, and a plurality of wedge surfaces located between adjacent pairs of respective grooves. Each wedge surface forms a lubricating oil gap which narrows circumferentially toward an adjacent flat trap surface and which narrows radially toward the outside circumference.

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Search report dated Jan. 7, 2004 issued for the corresponding International Application No. PCT/EP2003/007207.

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