Roller reamer with mechanical face seal
OwnerDuane Shotwellinventor
Life of this patent
Estimating the term…
Abstract
At least one mechanical face seal is disposed within a cutter cartridge of a roller reamer. The cutter cartridge includes a roller cutter and a retention assembly. A bearing shaft of the retention assembly extends through an inner channel of the roller cutter. A first mechanical face seal is disposed or shared between the roller cutter and a first pillow block of the retention assembly. An optional second mechanical face seal is disposed or shared between the roller cutter and a second pillow block of the retention assembly. Each pillow block is rotatably coupled at an opposing end of the bearing shaft. The retention assembly includes two separately matched sets of one pillow block and a wedge. The wedges in combination detachably secure the pillow blocks to a tool body of the roller reamer.
Claims20
A roller reamer comprising:
- a tool body having at least one axial recess;
- a roller assembly comprising a roller cutter and a retention assembly removably positioned with the at least one axial recess, wherein the roller cutter is rotatably coupled with the retention assembly;
- and
- a first mechanical face seal disposed between the retention assembly and roller cutter, wherein an inner seal ring of the first mechanical face seal is coupled with the roller cutter at a first end of the roller cutter and a first inner energizer is disposed between the inner seal ring and roller cutter and the first inner energizer directs compressive force against the inner seal ring, and an outer seal ring of the mechanical face seal is coupled with the retention assembly and a first outer energizer is disposed between the outer seal ring and the retention assembly and the first outer energizer directs compressive force against the outer seal ring.
Dependencies are inferred from the claim text.