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. 04, 2007
Filed:
Aug. 22, 2005
Applicant:
Steven R. Stuve, Lake Mills, WI (US);
Inventor:
Steven R. Stuve, Lake Mills, WI (US);
Assignee:
Key Safety Systems, Inc., Sterling Heights, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60R 21/34 (2006.01); B60T 7/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vehicle soft impact detection system uses a piezo film mounted to a front vehicle bumper. The piezo film is selected and mounted to have a greater sensitivity to low-frequency shock waves as compared to high-frequency shock waves, the frequency and amplitude is then compared to a selected range of frequencies and amplitudes that are indicative of a crash with a soft tissue body. In a further embodiment the output of the piezo film is compared with the output of a second sensor which is more sensitive to high-frequency shock waves than to low-frequency shock waves such as a Terfenol-D based sensor.