KIRK M NELSON
Engineering in Silvis, IL

License number
Massachusetts 48556
Issued Date
Mar 10, 2010
Expiration Date
Jun 30, 2016
Type
Structural Engineer
Address
Address
Silvis, IL 61282
LicenseFiles verified this license of Nov 24, 2016 at the Mass.gov - Consumer Affairs and Business Regulation.

Professional information

Kirk Nelson Photo 1

Ladder

US Patent:
2013029, Nov 7, 2013
Filed:
Apr 4, 2013
Appl. No.:
13/856853
Inventors:
Rory Frick - Aledo IL, US
Kirk Nelson - Silvis IL, US
International Classification:
E06C 1/387, B62B 1/20
US Classification:
182156
Abstract:
A ladder for use with heavy machinery such as farm equipment, the ladder having platform steps, the ladder being convertible between a deployed position for supporting a person or other load, to a storage, scaffold, or ramp position in which the steps lie in a generally planar arrangement. When deployed, the ladder steps remain parallel to each other. The ladder includes two frames, the frames pivotably connected by a plurality of platform steps, one of the frames being pivotably attached to a piece of heavy machinery. The frame nest within one another in the storage configuration. The pivotable attachment to the heavy equipment may be wheels on the ladder frame that engage horizontal tracks on the heavy equipment, allowing the ladder to be lifted up, the frames nested, and the ladder in the storage configuration slid along the tracks and stored.