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:
Jun. 30, 2009
Filed:
Jun. 18, 2008
André G. J. Dhont, Maldegem, BE;
Johnny Bossuyt, Torhout, BE;
Frank R. G. Duquesne, Zwevegem, BE;
Tom N. N. Somers, Lotenhulle, BE;
André G. J. Dhont, Maldegem, BE;
Johnny Bossuyt, Torhout, BE;
Frank R. G. Duquesne, Zwevegem, BE;
Tom N. N. Somers, Lotenhulle, BE;
CNH America LLC, New Holland, PA (US);
Abstract
A grain cleaning system for a combine harvester, comprises a frame supporting a grain pan and a sieve. The grain pan receives grain and chaff separated from the crop by a threshing mechanism and is reciprocable relative to the frame in order to separate the grain from the chaff and to propel the grain and chaff towards the sieve. The sieve is reciprocable relative to the frame and is connected to the frame by front and rear support arms and that are pivotably secured to the frame and to the sieve. In the invention, the front support arms have different geometries from the rear support arms such that when the sieve is reciprocated relative to the frame, the vertical component of oscillation is greater at the front end than at the rear end of the sieve.