Non-rotatable wear ring and retainer sleeve for a rotatable...

Details Non-rotatable wear ring and retainer sleeve for a rotatable... Non-rotatable wear ring and retainer sleeve for a rotatable...

2007-06-12

2007-06-12

Singh, Sunil (Department: 3673)

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Wear shield or replaceable wear sleeve

C299S107000

Reexamination Certificate

active

10952158

ABSTRACT:
A compressible sleeve for fitting around the shank of a rotatable tool has a cut out portion at the forward end thereof. The sleeve is compressed to a diameter less than the inner diameter of the bore of a tool holder by an annular wear ring having a generally cylindrical central opening with a diameter larger than the diameter of the bore of the tool holder, but having an inwardly directed projection that retains the cylindrical sleeve in a diameter that is less than the diameter of the bore of the tool holder. When the shank of the tool is subsequently driven into the bore of the tool holder, the wear ring is forced forwardly along the sleeve until the projection of the wear ring falls between the cut out portions of the sleeve thereby allowing the sleeve to expand to the diameter of the bore of the tool holder. The outer walls of the cut out portion of the sleeve engage the ends of the inwardly directed projection of the wear ring thereby preventing the wear ring from rotating with the tool.

REFERENCES:
patent: 4818027 (1989-04-01), Simon
patent: 4844550 (1989-07-01), Beebe
patent: 5931542 (1999-08-01), Britzke
patent: 6508516 (2003-01-01), Kammerer
patent: 6692083 (2004-02-01), Latham
patent: WO 03/042500 (2003-05-01), None

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