US 11,708,254 B2
Opto-electric system of enhanced operator control station protection
Ignacy Puszkiewicz, Hagerstown, MD (US); Matthew I. Gilbride, Frederick, MD (US); David W. Lombardo, Walkersville, MD (US); and Brian K. Mohlman, Hagerstown, MD (US)
Assigned to JLG INDUSTRIES, INC., McConnellsburg, PA (US)
Filed by JLG Industries, Inc., McConnellsburg, PA (US)
Filed on Nov. 13, 2018, as Appl. No. 16/189,021.
Application 16/189,021 is a continuation of application No. 15/094,286, filed on Apr. 8, 2016, granted, now 10,124,999.
Application 15/094,286 is a continuation in part of application No. 13/885,720, granted, now 9,586,799, issued on Mar. 7, 2017, previously published as PCT/US2011/066122, filed on Dec. 20, 2011.
Claims priority of provisional application 61/435,558, filed on Jan. 24, 2011.
Claims priority of provisional application 61/424,888, filed on Dec. 20, 2010.
Prior Publication US 2019/0077646 A1, Mar. 14, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. B66F 17/00 (2006.01); B66F 11/04 (2006.01)
CPC B66F 17/006 (2013.01) [B66F 11/044 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A personnel lift comprising:
a vehicle chassis;
a lifting assembly secured to the vehicle chassis;
a work platform attached to the lifting assembly, the work platform including a floor structure, a safety rail coupled with the floor structure and defining a personnel work area, and a control panel area, the control panel area including a sensor support bar separate from the safety rail and having a top crossbar positioned above the safety rail and extending along a width dimension, and sidebars, each sidebar having a proximal portion substantially level with the top crossbar and extending substantially perpendicularly from the top crossbar, and a distal portion extending below the top crossbar, wherein the sidebars define a width of the control panel area and include respective bent sections;
a control box disposed in the control panel area, the control box including an operator input implement, wherein the top crossbar is positioned above the control box;
driving components cooperable with the lifting assembly for lifting and lowering the work platform;
a sensor positioned adjacent the control panel area, the sensor including a transmitter unit mounted on one of the bent sections and below the top crossbar, on one side of and above the control box, and on a control box side of the sidebars and a receiver unit mounted on the other of the bent sections and below the top crossbar, on an opposite side of and above the control box, and on the control box side of the sidebars, the transmitter unit emitting a light beam across the control panel area to the receiver unit; and
a control system communicating with the driving components, the control box, and the sensor, the control system controlling operation of the driving components based on signals from the operator input implement and the sensor.