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US 12,600,611 B2Granted
Opto-electric system of enhanced operator control station protection
AssigneeJLG Industries, Inc.
InventorsIgnacy Puszkiewicz, Matthew I. Gilbride, David W. Lombardo, Brian K. Mohlman
Life of this patent
Estimating the term…
Abstract
A system for protecting an operator on an aerial work platform from a crushing hazard includes a sensor, such as opto-electric sensor, positionable adjacent the control panel area. A control system is programmed to control operation of the driving components based on signals from the sensor.
Claims17
A work platform comprising:
- a floor structure defining an interior space;
- a safety rail coupled with the floor structure and including a first sidebar and a second sidebar laterally spaced from the first sidebar;
- a control panel supported on a portion of the safety rail;
- a control panel area disposed at least partially surrounding the control panel;
- and
- a protection device including an optical transmitter that emits a beam to an optical receiver, wherein the optical transmitter is disposed in a first housing, the first housing is coupled to the first sidebar and the optical receiver is disposed in a second housing, the second housing is coupled to the second sidebar so that the beam extends above the control panel and across an interior-facing side of the control panel area;
- wherein the first housing is coupled to a curved portion of the first sidebar and the second housing is coupled to a curved portion of the second sidebar, wherein the curved portion of the first sidebar defines a first bend between a first-end portion and a second-end portion of the first housing and the curved portion of the second sidebar defines a second bend between a first-end portion and a second-end portion of the second housing.
4 more elements
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 including a first sidebar and a second sidebar laterally spaced from the first sidebar,
- a control panel supported on a portion of the safety rail,
- a control panel area disposed at least partially surrounding the control panel, and
- a protection device including an optical transmitter that emits a beam to an optical receiver, wherein the optical transmitter is disposed in a first housing that is coupled to a curved portion of the first sidebar so that the curved portion of the first sidebar is between a first-end portion and a second-end portion of the first housing, and wherein the optical receiver is disposed in a second housing that is coupled to a curved portion the second sidebar so that the curved portion of the second sidebar is between a first-end portion and a second-end portion of the second housing
- a control box disposed in the control panel area, the control box including an operator input implement;
- driving components coupled to the lifting assembly for lifting and lowering the work platform;
- and
- a controller in communication with the driving components, the control box, and the protection device, the controller configured to:
- allow operation of the driving components when the optical receiver detects the beam;
- stop operation of the driving components when the beam is blocked from reaching the optical receiver;
- and
- reverse a last operation of the driving components after the optical receiver does not detect the beam for a predetermined period of time.
13 more elements
Dependencies are inferred from the claim text.