公开(公告)号：US10280051B2

公开(公告)日：2019-05-07

申请号：US15139721

申请日：2016-04-27

Applicant: Hall Labs LLC

Inventor： David R. Hall ,  Jerome Miles ,  Michael Hall ,  Daniel Madsen ,  Ben Taylor

IPC: B66D1/38 ,  B66D1/22 ,  B66D1/48 ,  B66D1/58 ,  A47B57/06 ,  B62H3/12 ,  B66D1/26 ,  B66D1/30 ,  F16M13/02 ,  B66D1/12 ,  B66D1/40 ,  B66D1/54 ,  B66D5/32

Abstract: A system includes two or more lifting devices attached to a structure each lifting device having a drum rotated by a motor to draw in or let out a line from the drum. The drum includes a groove formed in an outer surface thereof to accommodate the line. In certain embodiments, each of the lifting devices are quickly and easily detachable from the structure by way of a flange and mounting bracket. The flange and mounting bracket have holes which are coaxially aligned. A pin or other fastener is used to join the flange and mounting bracket together. Two or more lifting devices may be connected to and moved along a mounting bracket.