Title:
DUMBBELL OF WEIGHT INCREASING AND DECREASING MECHANISM
Document Type and Number:
Japanese Patent JPH08332245
Kind Code:
A
Abstract:
PURPOSE: To provide a dumbell of a weight increasing and decreasing mechanism which can increase and decrease the weight of the dumbbell freely, making use of attraction force of a ferrite magnet, and trains a hand and an arm and promotes circulation of the blood.
CONSTITUTION: A dumbbell body 1 consisting of a ferrite magnet 2 being a columnar body where many small projections 4 are provided all over the periphery and a plurality of auxiliary dumbbells la consisting of ferrite magnets la being columnar bodies separate from this constitute a set.
Inventors:
NAKAMURA KEIJIRO
Application Number:
JP17536795A
Publication Date:
December 17, 1996
Filing Date:
June 07, 1995
Export Citation:
Assignee:
TOKUSHU AIR SYST KK
International Classes:
A63B21/075; H01F7/02; (IPC1-7): A63B21/075; H01F7/02