The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2020
Filed:
Aug. 29, 2018
Life Robotics Inc., Tokyo, JP;
Woo-Keun Yoon, Tokyo, JP;
Hiroaki Matsuda, Tokyo, JP;
LIFE ROBOTICS INC., Tokyo, JP;
Abstract
A linear extension and retraction mechanism includes a plurality of flat-plate shaped first pieces that are connected to each other, and a plurality of second pieces having a cross-sectional U-shaped groove frame shape that are connected to each other. A leading first piece of the plurality of first pieces and a leading second piece of the plurality of second pieces are joined by a head section. The first and second pieces become linearly rigid when the first pieces are joined to an upper part of the second pieces, and the first and second pieces return to a bent state when separated from each other. Protrusion sections that protrude inward are extended in the width direction in a bottom plate of each second piece. Corners of edge parts of the protrusion sections are chamfered.