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:
Oct. 23, 2001
Filed:
Sep. 17, 1999
Timothy Davies, Hermitage, TN (US);
Charles Hopson, Lebanon, TN (US);
Pascal Bonduel, Bouzy la Foret, FR;
Francios Breynaert, Caen, FR;
Christos Kyrtsos, Southfield, MI (US);
Joseph Tyckowski, Clawson, MI (US);
Meritor Light Vehicle Systems, LLC, Troy, MI (US);
Abstract
In a first embodiment, a vehicle window obstruction system incorporates a conductive coating placed on the window. Such coatings are known for use in defrost systems. A voltage source is connected to the conductive coating, such that an electrical charge is placed across the window. Electrical characteristics of the charge are monitored, and compared to expected values. In the event that an obstruction is encountered, the monitored values will differ from expected values, and a control can indicate the presence of an obstruction. Alternatively, the signal could be a high frequency signal such as a sound signal which would be varied when the window contacts a human obstruction.