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:
Jun. 30, 2020
Filed:
Jul. 17, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Yoshinari Matsuyama, Osaka, JP;
Tomohiro Sekiguchi, Kanagawa, JP;
Masaki Shikanai, Kanagawa, JP;
Takeshi Kikuchi, Osaka, JP;
Tomomi Nishikata, Ishikawa, JP;
Abstract
A wall surface suction-type travel device is configured to travel on a wall surface while being suctioned on the wall surface. An intermediate chamber communicates with decompression chambers facing the wall surface. A suction device sucks in air from the intermediate chamber to decompress the intermediate chamber. Principal communicating parts allow the decompression chambers to communicate with the intermediate chamber. Secondary communicating parts allow the respective decompression chambers to communicate with the intermediate chamber. Valves face openings of the respective principal communicating parts. An area of an opening of each of the secondary communicating parts is smaller than an area of the opening of a corresponding one of the principal communicating parts. On condition that pressure in one of decompression chambers gets higher than pressure required for wall surface suction, a consequent difference in pressure between the one of decompression chambers and the intermediate chamber causes a corresponding one of the valves to close the opening.