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:
Jan. 17, 1995
Filed:
Oct. 15, 1993
John M Hadank, Dunlap, IL (US);
Kenneth J McGuire, Peoria, IL (US);
David R Meinhold, Metamora, IL (US);
Ron J Penick, Henry, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Large work machines typically include an automatic lubrication system for lubricating critical areas during operation. In such systems it is advantageous to provide an efficient and flexible controller having substantial diagnostic capabilities. The subject inventions provides a sensor for determining the level of an operational parameter, a device for calculating a time interval being dependent on a previous lubrication event and the operational parameter, a device for producing a lubrication signal in response to the time interval reaching a predetermined interval constant, and a lubrication control for activating a lubrication system.