Title:
ENDLESS CHAIN AND BALLAST REMOVAL DEVICE HAVING SAME
Document Type and Number:
WIPO Patent Application WO/2010/070741
Kind Code:
A1
Abstract:
An endless chain (25) for ballast removal comprises a plurality of link bases (45) which are so connected to each other as to be capable of swinging around swing axes (57) and also so connected to each other as to be capable of swinging around the other swing axes (61) so that the bases can extend along the curved portions (41) of support members, bits (47) and ballast scraping plates (49) for pushing and collapsing ballast supported on each of the link bases. A set of overlapped parts (69, 71) capable of overlapping with each other for closing the gap between the adjacent link bases are provided on these link bases. These overlapped parts can prevent the ballast from intruding between the both link bases.
Inventors:
OJIMA, Tomoyuki (10-15, Umejima 1-chome Adachi-k, Tokyo 16, 12108, JP)
Application Number:
JP2008/072923
Publication Date:
June 24, 2010
Filing Date:
December 17, 2008
Export Citation:
Assignee:
MIZUTANI-GUMI Co., Ltd. (10-15, Umejima 1-chome Adachi-k, Tokyo 16, 12108, JP)
株式会社水谷組 (〒16 東京都足立区梅島１丁目１０番１５号 Tokyo, 12108, JP)
MARUMA TECHNICA CO., LTD. (2-22, Sakuragaoka 1-chome Setagaya-k, Tokyo 54, 15600, JP)
株式会社水谷組 (〒16 東京都足立区梅島１丁目１０番１５号 Tokyo, 12108, JP)
MARUMA TECHNICA CO., LTD. (2-22, Sakuragaoka 1-chome Setagaya-k, Tokyo 54, 15600, JP)
International Classes:
E01B27/04; F16G13/18
Attorney, Agent or Firm:
ARAI, Nobuaki (ARAI & ASSOCIATES, Daini-Futaba Bldg. No. 601,13-11, Shiba 5-chom, Minato-ku Tokyo 14, 10800, JP)