Rock boring cutter with thread-on replaceable cutting element

Details Rock boring cutter with thread-on replaceable cutting element Rock boring cutter with thread-on replaceable cutting element

E - Fixed Constructions

21

B

255/72

E21B 10/00 (2006.01) E21B 10/10 (2006.01) E21B 10/12 (2006.01) E21B 10/22 (2006.01) E21B 10/52 (2006.01) E21D 9/10 (2006.01) F16C 19/56 (2006.01)

Patent

CA 1057735

ROCK BORING CUTTER WITH THREAD-ON REPLACEABLE CUTTING ELEMENT Abstract of the Disclosure A cutter with a replaceable cutting element is adapted to be mounted upon the rotary head of an earth boring machine or upon the body of an earth boring bit. The cutter is used in conjunction with an earth boring machine that functions to form a borehole or tunnel in the formation being bored. The cutter may operate to fracture rock between a proximate pair of kerfs in a manner to cause fragments of the formation to be separated from the formation being bored or may crush and disintegrate the formation. At least one annular cutting element is mounted on the periphery of the cutter body for contacting the formations. The cutter body includes an external annular threaded surface between the ends of the cutter body. The cutting element includes a threaded inner surface that mates with the threads on the cutter body. A locking shoulder on the cutter body is in contact with a locking shoulder on the cutting element. -1a-

270661

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