Patent · US Active

Elevator service requesting based on social media application module

US10645543B2 · kind B2 · utility

2Cited by

5References

22Claims

0Family size

Assignee

OTIS ELEVATOR COMPANY · US

Inventors

Hui Chen · Sammamish, US
Shenhong Wang · Shanghai, CN
Siqi Ma · Shanghai, CN
Fu Qi · Shanghai, CN

Key dates

Filing date	May 10, 2019
Grant date	May 5, 2020
Priority date	—
Expiry date	May 10, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB66B2201/4653
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A speed governor assembly and an elevator system. The speed governor assembly includes: a sheave; a centrifugal mechanism mounted on the sheave and rotating together with the sheave; an overspeed protection switch at a first distance from a radial outer side of the centrifugal mechanism; a core ring disposed coaxially with the sheave; and a triggering arm rotating together with the core ring; wherein the centrifugal mechanism engages with the core ring and drives the core ring and the triggering arm to rotate when the sheave reaches a second speed, and the rotation of the triggering arm can contact and trigger the overspeed protection switch.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.