Title:
CORE BIT MOUNTING AND REMOVING STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2005/014211
Kind Code:
A1
Abstract:
The outer peripheral surface of a mounting section (13) formed on the rear end of a core bit (10) is formed with an annular groove (17) and an annular flange (14). Mutually fitting rotation locking sections (16, 21) are formed between the end surface of the cylindrical member (20) of a chuck (2) and the end surface of the annular flange (14). A drawing means (23) formed with an engaging pawl member (24) adapted to engage the annular groove (17) in the core bit (10) is slidably installed on the chuck (2). The rotation locking sections (16, 21) are mutually fitted by engaging the engaging pawl member (24) of the drawing means (23) with the annular groove (17).
Inventors:
Agehara, Kigen c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Ichiba, Tomofumi c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Yamashita, Michio c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Murakami, Naohide c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Ichiba, Tomofumi c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Yamashita, Michio c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Murakami, Naohide c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Application Number:
PCT/JP2004/011408
Publication Date:
February 17, 2005
Filing Date:
August 03, 2004
Export Citation:
Assignee:
MAX CO., LTD. (6-6 Nihonbashihakozakicho, Chuo-ku, Tokyo, 103-8502, JP)
Agehara, Kigen c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Ichiba, Tomofumi c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Yamashita, Michio c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Murakami, Naohide c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Agehara, Kigen c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Ichiba, Tomofumi c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Yamashita, Michio c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
Murakami, Naohide c/o Max Co. Ltd. (6-6, Nihonbashihakozakich, Chuo-ku Tokyo, 103-8502, JP)
International Classes:
B23Q3/12; B23B31/113; B23B51/00; B23B51/04; B23B51/12; B28D1/14; B23Q3/00; B23B31/10; B23B51/00; B23B51/04; B28D1/14; (IPC1-7): B23B51/12; B23B31/113; B23B51/04; B28D1/14
Attorney, Agent or Firm:
Oguri, Shohei (Eikoh Patent Office, 13th Floor ARK Mori Building, 12-32, Akasaka 1-chom, Minato-ku Tokyo, 107-6013, JP)