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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.:

US 12587185 B1

PDFFull Text
Date of Patent:
Mar. 24, 2026

Filed:

Sep. 19, 2024

Device for inputting elevator call commands and elevator control system

Applicant:

Otis Elevator Company, Farmington, CT (US);

Inventors:

Heping Qiu, Shanghai, CN;

Qiyun Sun, Shanghai, CN;

Assignee:

OTIS ELEVATOR COMPANY, Farmington, CT (US);

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

Jung Kim

Int. Cl.
CPC ...
H03K 17/18 (2006.01); B66B 1/46 (2006.01); B66B 1/52 (2006.01); H01H 13/02 (2006.01); H05B 45/10 (2020.01); H05B 45/325 (2020.01);
U.S. Cl.
CPC ...
H03K 17/18 (2013.01); B66B 1/462 (2013.01); B66B 1/52 (2013.01); H01H 13/023 (2013.01); H05B 45/10 (2020.01); H05B 45/325 (2020.01);
Abstract

A device for inputting an elevator calling command and an elevator control system including the device. A device for inputting an elevator calling includes one or more button units, each of the button units including a switching element and a variable resistance circuit coupled with the switching element. The variable resistance circuit includes a button switch and a display element coupled in parallel, and a resistance value of the variable resistance circuit varies with a state of the button switch. The device further includes a control unit configured to determine a state of a corresponding button switch based on the resistance value of the variable resistance circuit within each of the button units, and to apply a pulse width modulation signal having different duty cycles onto a control terminal of a corresponding switching element based on the state as determined.

Find Patent Forward Citations

Qiu, Heping. (2026). Device for inputting elevator call commands and elevator control system (U.S. Patent No. 12587185). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12587185

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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