Title:
LOCK DRILL FIXTURE
Document Type and Number:
Japanese Patent JPS5921890
Kind Code:
A
Abstract:
The device is for fitment of rock drills, and comprises a bar (12) and a support component on which is mounted a connection unit (32). The support unit bears the drilling appts., and is rotatably coupled to the bar via the connection unit. A fluid cylinder (50) is connected between the bar and connection unit and produces relative movement between the bar and support unit. A lock pin is inserted between the bar and the connection component to hold the drilling gear in one of several positions.
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Inventors:
UIRIAMU JIEI UEBAA
Application Number:
JP19786582A
Publication Date:
February 03, 1984
Filing Date:
November 12, 1982
Export Citation:
Assignee:
JOY MFG CO
International Classes:
E21B17/03; E21B1/00; E21B; E21C; (IPC1-7): E21C3/34
Attorney, Agent or Firm:
Yonehara Masaaki