US 12,291,438 B2
Flexible plate scale for platform load weighing
Brian M Clark, Seattle, WA (US); and Rainer Leuschke, Seattle, WA (US)
Assigned to Terex USA, LLC, Norwalk, CT (US)
Filed by Terex USA, LLC, Westport, CT (US)
Filed on Mar. 29, 2021, as Appl. No. 17/216,258.
Application 17/216,258 is a continuation of application No. 15/677,701, filed on Aug. 15, 2017, granted, now 10,961,099.
Claims priority of provisional application 62/385,353, filed on Sep. 9, 2016.
Prior Publication US 2021/0214206 A1, Jul. 15, 2021
Int. Cl. B66F 17/00 (2006.01); B66F 11/00 (2006.01); B66F 11/04 (2006.01); G01G 19/08 (2006.01); G01G 19/52 (2006.01); G01G 23/18 (2006.01)
CPC B66F 17/006 (2013.01) [B66F 11/044 (2013.01); G01G 19/083 (2013.01); G01G 19/52 (2013.01); G01G 23/18 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A system for measuring the weight of a load in a basket of a mobile aerial work platform (AWP), the system comprising:
a. a mobile AWP with a boom disposed on the mobile AWP;
b. a platform support structure; configured to support a human being in an elevated work location;
c. a load sensing linkage system disposed between said boom and said platform support structure; and
d. said load sensing linkage system being free of any Roberval parallel rigid pivoting arms and any non-linear slop producing pivot bearings therein and having:
i. a pair of horizontal flexible plates connecting the boom to the platform support structure; where the pair of horizontal flexible plates consists of an upper plate and a lower plate;
ii. said pair of horizontal flexible plates being configured to be stiff in the horizontal direction and flexible in the vertical direction, so that a vertical component of a platform load is supported in bending of said pair of horizontal flexible plates; and a moment of the platform load is supported in horizontal compression on the lower plate and horizontal tension on the upper plate; such that a moment support is stiff and a bending support is flexible; and
iii. a load cell.