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:
May. 27, 2008
Filed:
Jul. 12, 2006
Hugh Richard Voit, Ii, Chicago, IL (US);
Robert D. Doescher, Geneseo, IL (US);
Alan G. Leupold, Plainfield, IL (US);
Marvin D. Pepper, Lockport, IL (US);
Hugh Richard Voit, II, Chicago, IL (US);
Robert D. Doescher, Geneseo, IL (US);
Alan G. Leupold, Plainfield, IL (US);
Marvin D. Pepper, Lockport, IL (US);
CNH America LLC, New Holland, PA (US);
Abstract
A variable air circulation system for the cab enclosure of an off-highway vehicle is disclosed and described. The system provides for adjustment of the ratio between fresh air circulation and recirculation of cab air. Fresh air is introduced into the cab through a fresh air inlet having a fresh air filter therein. The air inlet leads to a circulation conduit. When a cab door is opened, a valve to the conduit is opened. When the door is closed, the air pulse created in the cab is effective, through the valve, to dislodge dust and dirt from the filter.