Title:
CONVERTER FOR PITCHER'S MOUND
Document Type and Number:
Japanese Patent JP3268217
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a converter of a pitcher's mound which achieves a curtailing of cost and excellence in saving space with a relatively simple working mechanism in a type which is installed in a field of a stadium allowing holding of baseball and other events.
SOLUTION: This counter is constituted of a pit which has a polygonal or circular opening provided at the position of a pitcher's mound, a solidly deformable lid 20 with the shape of the outer circumference thereof almost matching that of the opening of the pit and a lifting means 30 which is disposed in the pit and drives the lid 20 from below to be deformed to a pitcher's mound formation position and a position matching the surface of the field. The solidly deformable lid is built by combining a polygonal or circular central plate 21 and a plurality of roughly trapezoidal section plates 23 arranged at a peripheral part thereof. The lift means 30 comprises a vertically moving means 31 which is erected within the pit and linked on the underside of the central plate 21 to vertically move it and a support means 33 which is fitted within the pit to support the section plates from below.
Inventors:
Takashi Kuwata
Yutaka Doi
Yutaka Doi
Application Number:
JP29253196A
Publication Date:
March 25, 2002
Filing Date:
November 05, 1996
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
A63C19/02; E04H3/14; (IPC1-7): A63C19/02; E04H3/14
Domestic Patent References:
| JP62225663A | ||||
| JP63169180U |
Attorney, Agent or Firm:
Arata Ishikawa
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