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:
Mar. 20, 2007
Filed:
Oct. 04, 2005
Robert M. Ford, Troy, MI (US);
John P. Manfreda, Sterling Heights, MI (US);
Mark J. Woloszyk, Sterling Heights, MI (US);
Shawn P. Haley, West Bloomfield, MI (US);
Robert M. Ford, Troy, MI (US);
John P. Manfreda, Sterling Heights, MI (US);
Mark J. Woloszyk, Sterling Heights, MI (US);
Shawn P. Haley, West Bloomfield, MI (US);
Innovative Design Solutions, Troy, MI (US);
Abstract
An electric jack ground contact detection method and device for detecting ground contact of an electric motor-driven jack as the jack is being extended to adjust the attitude of a mobile platform. The device includes a controller that monitors the electrical power draw of an electric motor-driven jack while the jack is being extended for use in adjusting the attitude of a mobile platform. The controller recognizes jack ground contact when the monitored power draw value exceeds a ground contact power draw value consistent with jack ground contact. The controller calculates the ground contact power draw value as equaling the sum of a dynamically-adjusted threshold power draw value associated with jack extension before ground contact and a power draw increase value equaling an amount of additional power that the jack is known to draw as a result of jack ground contact.