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:
Sep. 29, 2015
Filed:
Mar. 26, 2014
Kenichi Dan, Nagoya, JP;
Kenichi Dan, Nagoya, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-Shi, Aichi-Ken, JP;
Abstract
A liquid storage device includes: a liquid storage having a storage chamber for storing liquid; first communication devices each for transmitting a radio wave for carrying out short distance wireless communication; a second communication device for receiving the radio wave transmitted from each first communication device; and a controller. The first communication devices are arranged in a configuration corresponding to a direction of movement of a boundary surface between a liquid stored area and a liquid non-stored area in the storage chamber. The movement is caused by increase or decrease of an amount of the liquid in the storage chamber. The storage chamber is partly interposed between the second communication device and the first communication devices. The controller detects a position of the boundary surface based on a reception status of the radio wave transmitted from each first communication device and received by the second communication device.