Title:
【発明の名称】トビナワ用ロープ
Document Type and Number:
Japanese Patent JP2840889
Kind Code:
B2
Abstract:
PURPOSE:To provide a jumping rope improving the controllability for high-speed rotation without being affected by the environmental temperature. CONSTITUTION:The tensile elastic modulus (E-5) of a jumping rope molded with an extrusion-moldable macromolecular material in the environment of -5 deg.C is set to three times or less the tensile elastic modulus (E20) in the environment of 20 deg.C, i.e., (E-5/E20)<=3.0.
More Like This:
| WO/2023/082547 | AUTOMATIC JUMP ROPE MACHINE |
Inventors:
TOKUI YASUYUKI
TOMOHARA TAKU
OONO KATSUHISA
MORIMOTO TAKURO
TOMOHARA TAKU
OONO KATSUHISA
MORIMOTO TAKURO
Application Number:
JP17085491A
Publication Date:
December 24, 1998
Filing Date:
July 11, 1991
Export Citation:
Assignee:
ASHITSUKUSU KK
International Classes:
A63B5/20; B29C47/00; D07B1/02; (IPC1-7): A63B5/20; B29C47/00; D07B1/02
Domestic Patent References:
| JP55136070A | ||||
| JP58174153U | ||||
| JP4736458U |
Attorney, Agent or Firm:
Iwao Tamura