Occupant sensor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 9, 2004
Issued Date -
N/A
app pub date -
May 29, 2001
filing date -
May 26, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An oscillatory or pulsed first signal is applied to a seat heating element that is operatively connected to first and second impedances that isolate the first signal from the source and sink of power to the heating element. In another embodiment, third and fourth impedances are connected to the first an second impedances at respective nodes, and a second signal substantially equal to the first signal is operatively coupled to the nodes. In another embodiment, the first signal is applied to an electrode, and the second signal is applied to the heating element, which shields the electrode from influence by the seat. In another embodiment, the first signal is applied to a first electrode that is shielded from the heating element by a second electrode operatively coupled to the second signal. The impedances may, for example, be provided by inductors or electronic switches.
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