Work platform with protection against sustained involuntary operation

• US 10,029,899 B2
• Filed: 01/30/2015
• Issued: 07/24/2018
• Est. Priority Date: 12/20/2010
• Status: Active Grant

• Current Assignee: JLG Industries Incorporated (Oshkosh Corporation)
• Original Assignee: JLG Industries Incorporated (Oshkosh Corporation)
• Inventors: Hao, Ji Hong, Puszkiewicz, Ignacy, Mock, Bryan Scott, Booher, Todd S., Greenberger, Dorothy Gates
• Primary Examiner(s): Cahn, Daniel P
• Application Number:
  US14/610,996
• Publication Number:
  US 20150144426A1
• Time in Patent Office: 1,271 Days
• CPC Class Codes: B66F 11/04 for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations Working platforms on fork-lift trucks B66F9/127; vehicle aspects of service vehicles B60P3/14; platforms for cleaning windows A47L3/02; devices for rescuing persons from buildings A62B1/02; liftable or lowerable platforms for use on ladders E06C7/16; maintenance travellers for bridges E01D19/10; scaffolds on an extensible sub-structure E04G1/22
• CPC Class Codes: B66F 11/044 Working platforms suspended from booms
• CPC Class Codes: B66F 17/006 for working platforms

Abstract

A work platform includes a floor structure having a width dimension and a depth dimension and a safety rail coupled with the floor structure. A control panel area is cooperable with the safety rail and includes a sensor support bar having a top cross bar extending along the width dimension and side bars extending substantially perpendicularly from the top cross bar. Each of the side bars includes an upper section extending from the top cross bar inward in the depth dimension to a bent section, and a lower section extending from the bent section outward in the depth dimension to the safety rail. A platform switch that is configured to trip upon an application of a predetermined force may be attached to the sensor support bar. A switch bar may be secured to the control panel area, and the platform switch may be attached to the switch bar.

Claims

1. An aerial work platform configured to be attached to an end of an extendible boom on a lift vehicle, said aerial work platform comprising:

a floor structure having a width dimension and a depth dimension;

a safety rail coupled with the floor structure and defining a personnel work area; and

a control panel area cooperable with the safety rail, the control panel area including;

support posts secured to the floor structure and extending in a straight line from the floor structure to beyond the safety rail, the safety rail being connected to the support posts and being discontinued between the support posts, and

a sensor support bar connected to the support posts and having a top cross bar extending along the width dimension and side bars extending substantially perpendicularly from the top cross bar, wherein the side bars define a width of the control panel area, and wherein each of the side bars includes an upper section extending in a straight line from the top cross bar inward in the depth dimension directly to a bent section, and a lower section extending outward directly from the bent section in the depth dimension to a respective one of the support posts,

wherein each of the side bars comprises a length extending along the upper section, the bent section and the lower section and includes only one turn between the upper section and the lower section along said length, and wherein the lower section extends at an angle directly from the bent section to the respective one of the support posts and in a straight line from immediately past the bent section to the respective one of the support posts.

2. The aerial work platform according to claim 1, wherein the upper section is angled downwardly with respect to the top cross bar and angled upwardly with respect to the bent section such that the upper section lowers in height as it extends from the top cross bar towards the bent section.

3. The aerial work platform according to claim 1, wherein the safety rail extends above the floor structure to a rail height, and wherein the lower section connects to the respective one of the support posts at a position about halfway between the floor structure and the rail height.

4. The aerial work platform according to claim 3, wherein the top cross bar is positioned above the rail height.