Mining bit with improved split ring retainer

Details Mining bit with improved split ring retainer Mining bit with improved split ring retainer

1981-12-30

1984-07-31

Purser, Ernest R.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Tooth mounted on helical head portion or head with helical...

37142A, 175354, 299 92, 403162, 403378, 407 7, 411300, E21C 3518, E21C 2546

Patent

active

044626380

ABSTRACT:
In a mining machine or the like which incorporates cutting bits having conically shaped heads and located in sockets of bit holders having respective wear sleeves located on the shanks of the bits with the bit free to rotate with the sleeve interposed between the socket preventing wear mount; a retainer is provided maintained by the mount and engageable with a receptacle on the sleeve to insure against undesired ejection of the bit.

REFERENCES:
patent: 3720273 (1973-03-01), McKenry et al.
patent: 3796464 (1974-03-01), Hansen et al.
patent: 4201421 (1980-05-01), DenBesten et al.

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