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. 07, 2010
Filed:
Apr. 16, 2008
Robert Quincy Elliott, Cary, NC (US);
Michael Scott Britton, Fuquay Varina, NC (US);
Mark Andrew Sporer, Apex, NC (US);
Robert Quincy Elliott, Cary, NC (US);
Michael Scott Britton, Fuquay Varina, NC (US);
Mark Andrew Sporer, Apex, NC (US);
Caterpillar S.A.R.L., Geneva, CH;
Abstract
A method of controlling in-rush current to a DC motor is disclosed. The method may include operating the DC motor in a first mode including applying back-EMF across a relay coil to maintain the relay in an open configuration when the back-EMF is below a predetermined voltage. The method may also include operating the DC motor in a second mode including applying the back-EMF across the relay coil to maintain the relay in a closed configuration when the back-EMF is equal to or above the predetermined voltage.