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. 22, 2019
Filed:
Apr. 27, 2018
Seiko Epson Corporation, Tokyo, JP;
Mitsuhiro Yamamura, Suwa, JP;
Toshiyuki Kamiya, Fujimi, JP;
Seiko Epson Corporation, , JP;
Abstract
A force detection device includes: a force sensor that has a piezoelectric element receiving a force and outputting a charge; a pre-compression unit that pre-compresses the force sensor; and a conversion output circuit that receives the charge from the force sensor and outputs a voltage. The pre-compression unit is short-circuited with a first ground of the conversion output circuit. The pre-compression unit has the same potential as the first ground. The force detection device includes a casing that accommodates the force sensor and the conversion output circuit. The casing is short-circuited with a second ground.