Title:
CASTER DEVICE
Document Type and Number:
Japanese Patent JP2008024210
Kind Code:
A
Abstract:
To provide a caster device capable of performing consistent travel irrespective of the presence/absence of any obstacle or the state of a ground contact surface by a simple structure.
When pinion gears 6a, 6b are moved as a body frame 1 is moved and reach the end of oblong holes of either of rotary frames 3a, 3b, the rotary frames are rolled to travel while changing the ground contact surface of a second rolling element 9.
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Inventors:
ISHIKAWA TAKEJI
Application Number:
JP2006200614A
Publication Date:
February 07, 2008
Filing Date:
July 24, 2006
Export Citation:
Assignee:
NATSUME OPTICAL CORP
International Classes:
B60B19/00; B62D57/024
Attorney, Agent or Firm:
Takao Watanuki
Horimai Kazuharu
Horimai Kazuharu