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:
Jul. 12, 2022
Filed:
Apr. 17, 2019
Assa Abloy Entrance Systems Ab, Lanskrona, SE;
Sven-Gunnar Soderqvist, Vallakra, SE;
Assa Abloy Entrance Systems AB, Landskrona, SE;
Abstract
Method () for controlling a drive arrangement () for an automatic door operator () of an entrance system () having one or more movable door members (D. . . Dm), whereby the automatic door operator () is for causing movements of the one or more movable door members (D. . . Dm) between a closed position and an opened position, respectively. The drive arrangement () comprises a DC-motor () for driving the automatic door operator (), a H-bridge () and a controller () for controlling the drive arrangement (). The H-bridge () comprises a first leg (A) and a second leg (B), the first leg (A) and second leg (B) both being connected to a first voltage supply line () and a second voltage supply line (), the first voltage supply line () having a higher voltage than the second voltage supply line ().