Title:
PICK-HOLDER FOR MINE MACHINE
Document Type and Number:
Japanese Patent JPS63255491
Kind Code:
A
Abstract:
A pick holder for a miner comprising a mounting base and a bit holder detachably mounted to the mounting base by way of a substantially vertical join face. The join face incorporates a pair of mating faces on each of the mounting base and bit holder inclined relative to the longitudinal plane of the pick holder and forming an arrowhead formation with a pair of shoulders parallel to the longitudinal plane. The bit holder is secured to the mounting base by a longitudinal bolt a significant length allowing a desired degree of strain to be induced in the bolt during attachment.
Inventors:
EDOWAADO UITSUKUNAA
Application Number:
JP6559988A
Publication Date:
October 21, 1988
Filing Date:
March 18, 1988
Export Citation:
Assignee:
JIYOI TECHNOL INC
International Classes:
E21C35/18; E21C35/193; E21C35/19; (IPC1-7): E21C35/18
Attorney, Agent or Firm:
Akira Asamura (3 outside)
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