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Title: Window-closing safety system

Abstract

A safety device includes a wire loop embedded in the glass of a passenger car window and routed near the closing leading-edge of the window. The wire loop carries microwave pulses around the loop to and from a transceiver with separate output and input ports. An evanescent field only and inch or two in radius is created along the wire loop by the pulses. Just about any object coming within the evanescent field will dramatically reduce the energy of the microwave pulses received back by the transceiver. Such a loss in energy is interpreted as a closing area blockage, and electrical interlocks are provided to halt or reverse a power window motor that is actively trying to close the window.

Inventors:
 [1]
  1. Livermore, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
871119
Patent Number(s):
5661385
Assignee:
Regents of University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
window-closing; safety; device; wire; loop; embedded; glass; passenger; car; window; routed; near; closing; leading-edge; carries; microwave; pulses; transceiver; separate; output; input; ports; evanescent; field; inch; radius; created; coming; dramatically; reduce; energy; received; loss; interpreted; blockage; electrical; interlocks; provided; halt; reverse; power; motor; actively; trying; close; safety device; input ports; wire loop; pulses received; microwave pulses; microwave pulse; rate output; wave pulse; dramatically reduce; /318/324/340/

Citation Formats

McEwan, Thomas E. Window-closing safety system. United States: N. p., 1997. Web.
McEwan, Thomas E. Window-closing safety system. United States.
McEwan, Thomas E. Wed . "Window-closing safety system". United States. https://www.osti.gov/servlets/purl/871119.
@article{osti_871119,
title = {Window-closing safety system},
author = {McEwan, Thomas E},
abstractNote = {A safety device includes a wire loop embedded in the glass of a passenger car window and routed near the closing leading-edge of the window. The wire loop carries microwave pulses around the loop to and from a transceiver with separate output and input ports. An evanescent field only and inch or two in radius is created along the wire loop by the pulses. Just about any object coming within the evanescent field will dramatically reduce the energy of the microwave pulses received back by the transceiver. Such a loss in energy is interpreted as a closing area blockage, and electrical interlocks are provided to halt or reverse a power window motor that is actively trying to close the window.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

Patent:

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