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Patent Searching and Data


Title:
CASTER
Document Type and Number:
WIPO Patent Application WO/2006/011229
Kind Code:
A1
Abstract:
A caster of endless structure formed to be less stuck even if a gap is large by solving a problem in a conventional endless belt wherein since the conventional endless belt is formed of a rather flexible member such as a rubber, when it touches a gap part, it is partly pushed inward by the gap part and recessed, and a large force becomes required for the endless belt to ride over the gap and the endless belt becomes easily stuck. The caster comprises a first wheel (3) supported on a mounting leg (2), a second wheel (4) supported on an axle (8) at one end of a suspension arm (7) supported, at the other end, by an axle (6) co-axial with the first wheel (3), and a winding member (5) wrapped around these wheels. The winding member (5) is formed in an endless belt shape by connecting independent blocks (25) to each other. The outer peripheral part of the block (25) is formed wide, and when the winding member (5) tends to be recessed and deflected, adjacent blocks are brought into contact with each other to prevent the winding member from being recessed.

Inventors:
YAMAUCHI TOSHIO (JP)
Application Number:
PCT/JP2004/010932
Publication Date:
February 02, 2006
Filing Date:
July 30, 2004
Export Citation:
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Assignee:
BOX KK (JP)
YAMAUCHI TOSHIO (JP)
International Classes:
B60B33/00; (IPC1-7): B60B33/00
Foreign References:
JPH08225001A1996-09-03
JP2002037147A2002-02-06
JPH1120401A1999-01-26
JPH1191304A1999-04-06
JP2001088507A2001-04-03
JP2003094906A2003-04-03
US2844413A1958-07-22
US3276531A1966-10-04
JPH10129541A1998-05-19
DE7011002U1970-07-09
Other References:
See also references of EP 1772291A4
Attorney, Agent or Firm:
Komatsu, Kiyomitsu (39-8 Nishi-Ikebukuro 2-chom, Toshima-ku Tokyo 21, JP)
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