Title:
SOROBAN FINGER TRAINER
Document Type and Number:
Japanese Patent JPH05313564
Kind Code:
A
Abstract:
PURPOSE: To provide the SOROBAN (Japanese abacus) finger trainer for improvidng an abacus calculation practicing effect.
CONSTITUTION: A stand plate 5 is provided integrally with a fase plate 4, a top plate 6 is provided in the upper part of the stand plate 5, and a supporting body 13 is fitted through a housing case 7 into a recessed part 8 provided on the top plate 6. In the supporting body 13, rotary rollers 11, 12 having projections 11a, 12a on the outside periphery are supported. A movable stand plate 30 opposed to the stand plate 5 is provided, and a space 3 for inserting a SOROBAN is formed between this movable plate 30, the stand plate 5, the base plate 4 and the top plate 6.
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Inventors:
SATO ATSUHIKO
Application Number:
JP15553192A
Publication Date:
November 26, 1993
Filing Date:
May 01, 1992
Export Citation:
Assignee:
SATO ATSUHIKO
International Classes:
G06C1/00; G09B19/02; (IPC1-7): G09B19/02; G06C1/00