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:
Apr. 29, 1986
Filed:
Mar. 03, 1982
Jack F Anderson, Marion, ND (US);
Clayton Melrose, Oakes, ND (US);
Other;
Abstract
A retractable tool apparatus is adapted to be mounted on a movable vehicle for working the area around and between objects in a row. The tool apparatus includes an extendable and retractable outrigger arm attachable on one of its ends to the vehicle. A work tool is mounted on the other end of the outrigger arm. An electro-hydraulic control system controls the retraction of the outrigger arm. This control system includes sensors in the form of a pair of wands mounted on the outrigger arm to sense objects in proximity to the work tool before the work tool contacts the objects. The first wand activates the control system upon contact with an object to retract the work tool. The second wand holds the control system in its retraction mode upon contact with the object even after the first wand has cleared the object.