Title:
ストレッチ用具
Document Type and Number:
Japanese Patent JP6709581
Kind Code:
B2
Abstract:
A stretching tool includes: two spheres of identical size, each with a two-layer structure consisting of an inner shell and an elastic outer covering layer which is affixed to the surface of the inner shell and which has a hardness relatively less than that of the inner shell; and a connecting section that connects the inner shells of the two spheres so that an extended axial center line passes through the centers thereof. The spheres' exterior surfaces have ridges that have saw-blade-shaped cross-sections and extend over the extended axial center line continuously from an end section on the outermost side of each of the two spheres toward the connecting section.
Inventors:
Morioira Shigeo
Application Number:
JP2018540529A
Publication Date:
June 17, 2020
Filing Date:
September 21, 2016
Export Citation:
Assignee:
Jute corporation
International Classes:
A61H15/00; A61H39/04
Domestic Patent References:
| JP3202291U | ||||
| JP3078536U |
Foreign References:
| US20160136474 |
Attorney, Agent or Firm:
Akira Nogami