Title:
CORE BIT
Document Type and Number:
WIPO Patent Application WO/2004/026551
Kind Code:
A1
Abstract:
A core bit, wherein an installation part having boring edges formed at a tip and a cylindrical guide part, fitted to a chuck part formed on a concrete drill, formed at a rear end is integrally formed, and an annular seal member forming a seal in the clearance thereof from the chuck part is formed in the cylindrical guide part.
Inventors:
Agehara, Kigen 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)
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/JP2003/011431
Publication Date:
April 01, 2004
Filing Date:
September 08, 2003
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)
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)
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:
B28D1/14; B23B31/00; B23B31/12; B23B51/04; B28D1/14; B23B31/00; B23B31/12; B23B51/04; (IPC1-7): B28D1/14
Attorney, Agent or Firm:
Oguri, Shohei (Eikoh Patent Office, 28th Floor ARK Mori Building, 12-32, Akasaka 1-chom, Minato-ku Tokyo, 107-6028, JP)