Patent · US Active

Retrofitted hoist machine

US11807493B1 · kind B1 · utility

0Cited by

12References

6Claims

0Family size

Assignee

OTIS ELEVATOR COMPANY · US

Inventors

Christopher H. Koenig · Granby, US
Barry G. Blackaby · Avon, US
Daniel B. Davis, III · Middlefield, US
Gregory M. O'Seep · Simsbury, US
John Eschenbrenner · Canton, US
Jesse R. Richter · Town of West Hartford, US
Gary P. Mendrala · West Springfield, US

Key dates

Filing date	Oct 31, 2018
Grant date	Nov 7, 2023
Priority date	—
Expiry date	Mar 10, 2042

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB66D5/30
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

Disclosed is a method of retrofitting a legacy hoist machine including: attaching a primary brake assembly to an end surface of a machine shaft, and configuring a controller to: control the primary brake assembly to provide service braking; and control a brake drum assembly as a secondary brake assembly to thereby apply emergency braking.

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