Patent · US Active

Synchronized motorized lifting devices for lifting shared loads

US9624076B2 · kind B2 · utility

2Cited by

41References

11Claims

0Family size

Inventors

David R. Hall · Provo, US
Jerome Miles · Spanish Fork, US
Davido Hyer · Spanish Fork, US
Kevin Rees · Herriman, US

Key dates

Filing date	Apr 4, 2014
Grant date	Apr 18, 2017
Priority date	—
Expiry date	Dec 10, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB66D1/485
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

A system includes multiple lifting devices, where each lifting device includes a drum to draw in or let out a line, and a motor and transmission coupled to the drum to apply a torque thereto. A grouping module is provided to group the lifting devices for synchronized operation. A synchronization module monitors an amount of line that is drawn in or let out from each of the lifting devices and, based on the amount, adjusts operating parameters (e.g., position, speed, etc.) of one or more of the lifting devices in the group to substantially synchronize the amount of line drawn in or let out with other lifting devices in the group.

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