The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1989
Filed:
Nov. 01, 1988
Van J Walbridge, Arvada, CO (US);
R Michael Donohue, Berthoud, CO (US);
GK Technologies, Inc., Woodcliff Lake, NJ (US);
Abstract
A mobile aerial lift having a vehicle and a boom structure mounted on a vehicle. The boom structure has an outer extremity. A workman's basket is mounted on the outer extremity. A control is carried by the boom structure and is accessible to the workman's basket for controlling operation of the boom structure. The boom structure has an insulated boom section and an exclosed space is provided for at least a portion of the insulated boom section. Gas is supplied under positive pressure to the enclosed space and provides a clean, relatively moisture-free environment for a portion of the interior of the insulated boom section and maintains the electrical insulating properties of the insulated boom section.