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:
Jul. 21, 1998
Filed:
Sep. 24, 1996
Thomas John LeMense, Livonia, MI (US);
TRW Inc., Lyndhurst, OH (US);
Abstract
An apparatus (32) senses the presence of a rearward facing child restraint seat (34) in a vehicle. A frequency oscillator (80) is used to provide an electrical transmit signal which is applied to an antenna (60). The antenna (60) transmits an electromagnetic (EM) signal (62) which has a frequency and a time duration. An identification tag (54) is securable to the child restraint seat (34) and provides an EM return signal (64) in response to the EM transmit signal (62). The EM return signal (64) has the same frequency as the EM transmit signal (62) and continues past the EM transmit signal. The antenna (60) receives the EM return signal (64) and provides an electrical return signal in response to the EM return signal. A product detector (100) is coupled to receive both the electrical transmit signal and the electrical receive signal for determining the presence of the identification tag (54).