Title:
SUBSTANTIALLY CYLINDRICAL POWDER COMPACT AND POWDER DIE DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/131672
Kind Code:
A1
Abstract:
The cross-sectional shape of a main part except for both end portions is generally divided into a lower arc-shaped face (12) extending along a base circle (P) and an upper arc-shaped face (12) of which top portion corresponds to the base circle (P). Side edge portions (15) extending inward from the base circle (P) are formed at side surfaces (14) of either side of the upper arc-shaped face (12). Curved edge portions (15a) concavely warped upward from the side edge portions (15) to end faces (10) so as to communicate with the end faces (10) and chamfered end portions (16) extending from the end faces (10) to the side surfaces (14) as to be curved in such a manner that the width thereof is gradually reduced are formed at both end portions in the longitudinal direction.
Inventors:
SHIMA, Jiro (2-1, Minoridai 5-chome, Matsudo-sh, Chiba 95, 〒2702295, JP)
嶋 治郎 (〒95 千葉県松戸市稔台五丁目２番地１ 日立粉末冶金株式会社内 Chiba, 〒2702295, JP)
嶋 治郎 (〒95 千葉県松戸市稔台五丁目２番地１ 日立粉末冶金株式会社内 Chiba, 〒2702295, JP)
Application Number:
JP2010/058027
Publication Date:
November 18, 2010
Filing Date:
May 12, 2010
Export Citation:
Assignee:
HITACHI POWDERED METALS CO.,LTD. (2-1 Minoridai 5-chome, Matsudo-shi Chiba, 95, 〒2702295, JP)
日立粉末冶金株式会社 (〒95 千葉県松戸市稔台五丁目２番地１ Chiba, 〒2702295, JP)
SHIMA, Jiro (2-1, Minoridai 5-chome, Matsudo-sh, Chiba 95, 〒2702295, JP)
日立粉末冶金株式会社 (〒95 千葉県松戸市稔台五丁目２番地１ Chiba, 〒2702295, JP)
SHIMA, Jiro (2-1, Minoridai 5-chome, Matsudo-sh, Chiba 95, 〒2702295, JP)
International Classes:
B22F3/035; B30B11/02; H01F41/02
Attorney, Agent or Firm:
SUENARI, Mikio (Asaco Kyobashi Building 3rd floor, 6-13 Kyobashi 1-chome, Chuo-k, Tokyo 31, 〒1040031, JP)
Claims: