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:
Dec. 10, 1991
Filed:
Oct. 26, 1990
Carl E Bohman, New Holland, PA (US);
Ford New Holland, Inc., New Holland, PA (US);
Abstract
In a forage harvester having an acoustic detector for sensing air-borne sounds produced by the impact of hard foreign objects on the crop feed mechanism of the harvester, a start-up control is provided for inhibiting the detector output during the intervals when the crop feed mechanism is stopped or being brought up to running speed. In forage harvesters having metal detectors for sensing the presence of metal in the crop material, the electromagnetic sensor in the metal detector inherently produces a noise output signal which is dependent on the speed of the crop feed mechanism, and this signal is used to control the inhibiting of the acoustic detector output.