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:
Jul. 05, 2011
Filed:
Aug. 31, 2010
Douglas John Bollin, Port Byron, IL (US);
Douglas John Bollin, Port Byron, IL (US);
Deere & Company, Moline, IL (US);
Abstract
A draper platform () with an elongate, laterally extending frame (), has a suspension system has two independent hydraulic circuits (), that can be independently filled and emptied to selectively lift the left side and the right side of the draper platform (). Two hydraulic cylinders () are disposed on the left side of the draper platform () in fluid communication with a gas-charged accumulator () to form the first hydraulic circuit (), and to support the draper platform () on a gauge wheel () and the left side of a feederhouse (). Two additional hydraulic cylinders (are disposed on the right side of the draper platform () in fluid communication with the second gas-charged accumulator () to form the second hydraulic circuit (), and to support the draper platform () on a gauge wheel () and the right side of the feederhouse (). Valves () control flow to the first and second hydraulic circuits (), respectively, to permit an electronic control circuit () to separately and independently fill and empty the first and second hydraulic circuits ().