IP Library Granted Patent US 8,499,889
Granted Patent B2
US 8,499,889 · App. 12/875,448 · Granted Aug 6, 2013

Adjustable work surface for large irregularly shaped objects

Inventors: Adam Lewis DuBose (Hartsville, SC); Ronald W. Bennett (Florence, SC); Rodrick Lafaye Williamson (Hemingway, SC)
Assignee: Aluminum Ladder Company
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,499,889
App. No.
12/875,448
Granted
Aug 6, 2013
Kind
B2
Abstract

An adjustable work platform comprises a fixed platform carrying a multiplicity of adjustable members designed to slide out of the fixed platform to variable lengths as needed. A large irregularly shaped object, such as an aircraft, may be driven into the interior of the platform with the adjustable members retracted. Once in place, the adjustable members are extended to form a heavy duty work platform conforming to the irregular shape of the exterior of the object.

Claims (23)

1. A method of providing a work platform for carrying heavy loads while accessing an irregularly shaped large object comprising the steps of:

providing the work platform having a fixed platform with a front side and a back side opposite thereto, said fixed platform comprising

a first stringer along said front side with defined openings therein,

a second stringer along said back side,

a multiplicity of I-beam guides spanning between said first stringer and said second stringer,

an adjustable platform extendable from said fixed platform having a slider received by adjacent I-beam guides and disposed to reversibly extend through one of said openings, said adjustable platform further comprising,

a toothed member that reversibly engages with said first stringer thereby restricting sliding of said slider;

a back plate attached to said slider, to limit the length of extension of said slider through said one of said openings;

moving a large object to within a predetermined separation distance of said work platform;

extending said adjustable platform from said fixed platform, thereby minimizing said separation distance; and

applying a lateral pressure to said toothed member to engage and disengage said toothed member from said first stringer.

2. A method of providing a work platform for carrying heavy loads while accessing an irregularly shaped large object comprising the steps of:

providing the work platform comprising a fixed platform with a front side and a back side opposite thereto, said fixed platform comprising,

a first stringer along said front side with defined openings therein,

a second stringer along said back side,

a multiplicity of I-beam guides spanning between said first stringer and said second stringer;

an adjustable platform extendable from said fixed platform comprising a slider received by adjacent I-beam guides and disposed to reversibly extend through one of said openings, said adjustable platform further comprising a toothed member that reversibly engages with said first stringer thereby restricting sliding of said slider;

a back plate attached to said slider, to limit the length of extension of said slider through said one of said openings;

moving a large object to within a predetermined separation distance of said work platform;

extending said adjustable platform from said fixed platform, thereby minimizing said separation distance; and

inserting a handle into said slider,

engaging said toothed member with said handle, and

reversibly disengaging said toothed member from said first stringer.

Assignments (3)
NUNC PRO TUNC ASSIGNMENT Recorded May 15, 2023
From: CARBIS HOLDINGS, INC.
To: SAM CARBIS ASSET MANAGEMENT, LLC
Reel/Frame 063641/0468 →
MERGER Recorded Feb 7, 2014
From: ALUMINUM LADDER COMPANY
To: CARBIS HOLDINGS, INC.
Reel/Frame 032175/0236 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 3, 2010
From: DUBOSE, ADAM LEWIS; BENNETT, RONALD W.; WILLIAMSON, RODRICK LAFAYE
To: ALUMINUM LADDER COMPANY
Reel/Frame 024938/0170 →
Continuity (1)
Related Publication 20120056364A1 · Mar 8, 2012