Title:
CORE BODY LOCK DEVICE OF CORE DRILL AND CORE BODY USED FOR THE DEVICE
Document Type and Number:
WIPO Patent Application WO/2001/038027
Kind Code:
A1
Abstract:
A core body lock device of a core drill which automatically locks a core body when a base body is coupled to the core body and, unless an unlocking operation is performed artificially, the relation of coupling between the base body and the core body is fixed, wherein, in the core drill which couples the base body to the core body by the engagement of an engaging projection with an engaging recessed part, the lock device having a locking claw is disposed on the base body, the locking claw is lowered lockingly to the rear part of the engaging projection with the locking claw energized by a compression spring under the condition that the engaging projection is engaged with the engaging recessed part to fix the engaging projection to the inside of the engaging recessed part so as to lock the core body.
Inventors:
Miyanaga, Masaaki (18-5, Aoyama 5-chome Shijimi-cho Miki-shi, Hyogo, 673-0521, JP)
Application Number:
PCT/JP2000/001425
Publication Date:
May 31, 2001
Filing Date:
March 09, 2000
Export Citation:
Assignee:
KABUSHIKI KAISHA MIYANAGA (2393, Fukui Miki-shi, Hyogo, 673-0433, JP)
Miyanaga, Masaaki (18-5, Aoyama 5-chome Shijimi-cho Miki-shi, Hyogo, 673-0521, JP)
Miyanaga, Masaaki (18-5, Aoyama 5-chome Shijimi-cho Miki-shi, Hyogo, 673-0521, JP)
International Classes:
B23B31/113; B23B51/04; (IPC1-7): B23B51/04
Attorney, Agent or Firm:
Sumida, Yoshihiro (Arco Patent Office 3rd.fl, Bo-eki Bldg. 123-1 Higashimach, Chuo-ku Kobe-shi Hyogo, 650-0031, JP)
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