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:
Nov. 23, 2021
Filed:
Oct. 02, 2017
U-shin Ltd., Tokyo, JP;
Tetsuo Tokudome, Hiroshima, JP;
U-SHIN LTD., Tokyo, JP;
Abstract
A door opening and closing device includes: a door drive unit capable of opening and closing a door; a detection means for detecting a subject present in an approach area; a measurement unit that measures a distance from the detection means to the subject; a determination unit that determines whether the subject has stopped in the approach area; a setting unit that sets a trigger zone in the approach area a; and a control means for starting control to drive the door drive unit when the subject is determined to have moved into the trigger zone. The setting unit sets the trigger zone to drive the door drive unit on the basis of the separation distance from the detection means to a stopped position.