Mining or in situ disintegration of hard material – Miscellaneous
Patent
1988-06-13
1990-05-01
Massie, IV, Jerome W.
Mining or in situ disintegration of hard material
Miscellaneous
299 86, E21C 3518
Patent
active
049213105
ABSTRACT:
A tool for breaking, cutting, and working solid materials includes a rearwardly extending shaft adapted to be inserted into the bore of a holder. The shaft includes an annular groove located adjacent a rearmost end thereof. A cylindrical clip is mounted on the shaft for retaining the tool within the holder. The clip includes a longitudinal slot extending longitudinally completely therethrough. A rear free end of the clip is inwardly bent into the groove of the shaft to oppose longitudinal forward movement of the shaft relative to the clip.
REFERENCES:
patent: 3519309 (1970-07-01), Engle et al.
patent: 4201421 (1980-05-01), Den Besten et al.
patent: 4684176 (1987-08-01), Den Besten et al.
patent: 4728153 (1988-03-01), Ojanen et al.
patent: 4836614 (1989-06-01), Ojanen
patent: 4850649 (1989-07-01), Beach et al.
Hansson Lennart
Hedlund Jan-Gunnar
Norman Hans-Olay
Bagnell David J.
Massie IV Jerome W.
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