Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Tooth mounted on helical head portion or head with helical...
Patent
1994-04-14
1995-05-16
Bagnell, David J.
Mining or in situ disintegration of hard material
Cutter tooth or tooth head
Tooth mounted on helical head portion or head with helical...
299 91, E21B 1000
Patent
active
054154626
ABSTRACT:
A rotatable cutting bit for insertion into the bore of a bit holder wherein the cutting bit includes a bit body with opposite forward and rearward ends, a hard insert at the forward end of the bit body, and an enlarged mediate portion which has a rearwardly facing shoulder. The cutting bit further has a rearward shank which contains a reduced diameter portion. The cutting bit carries a rotatable sleeve on the shank whereby the sleeve surrounds the shank between the shoulder and the reduced diameter portion. The cutting bit also carries a rotatable washer on the shank adjacent the shoulder of the bit body. A keeper ring is captive within the reduced diameter portion of the shank.
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Sandvick Brochure "System 35" 1987.
Block Top-Pocket Saver Literature from All Pacific Distribution (2 pages) (undated).
Spin Shield Literature from All Pacific Distribution (pp. 14 and 16) (undated).
Bagnell David J.
Kennametal Inc.
Prizzi John J.
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