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:
Mar. 10, 2020
Filed:
Nov. 30, 2018
New Japan Radio Co., Ltd., Tokyo, JP;
Aisin Seiki Kabushiki Kaisha, Kariya-shi, Aichi-ken, JP;
Nobumitsu Hirano, Tachikawa, JP;
Hajime Fujiwara, Fujimino, JP;
Kenji Takebuchi, Gunma-ken, JP;
Hiroyuki Kuchiji, Saitama, JP;
Akira Seshimoto, Saitama, JP;
Kimiyoshi Yamasaki, Tokyo, JP;
Kenichi Taguchi, Toyota, JP;
Masaya Otokawa, Gifu, JP;
NEW JAPAN RADIO CO., LTD., Tokyo, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-shi, JP;
Abstract
An ultrasonic sensor in the invention includes an ultrasonic transmitter, an ultrasonic receiver, and a detector. The ultrasonic transmitter transmits pulse-shaped ultrasonic waves to a thin plate to excite the thin plate. The ultrasonic receiver receives direct waves and reflected waves among the ultrasonic waves propagating in the thin plate excited by the pulse-shaped ultrasonic waves, the direct waves propagating only in the thin plate, and the reflected waves radiating outward, then reflected by the object, and returning to the thin plate. The detector detects the object present near the thin plate on the basis of a difference between a time at which the ultrasonic receiver receives the direct waves and a time at which the ultrasonic receiver receives the reflected waves.