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. 30, 2014
Filed:
Mar. 21, 2012
Lonny E. Johnson, Peoria, IL (US);
Bailey J. Ferkel, East Peoria, IL (US);
Lonny E. Johnson, Peoria, IL (US);
Bailey J. Ferkel, East Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A cooling system for a machine having an engine and an operator cabin includes a primary air conditioning unit, an auxiliary air conditioning unit, an electrical powering unit configured to electrically power the auxiliary air conditioning unit, a sensor configured to generate a signal indicative of a temperature within the operator cabin, and a controller in communication with the primary air conditioning unit, the auxiliary air conditioning unit, and the sensor. The controller selectively activates the primary air conditioning unit and the auxiliary air conditioning unit. When the primary air conditioning unit is activated, a timer is started to determine the elapsed time during which the temperature within the operator's cabin exceeds the acceptable range of desired temperature, and the auxiliary unit is activated when the elapsed time exceeds a threshold time.