Safety device for garage door
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Nov 23, 2005
filing date -
Jan 8, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A safety device of a garage door includes a light guiding mirror disposed on a location adjacent to each of four corners of the garage door. A transmitter and a receiver are installed in a garage door control mechanism. Through the surrounding light guiding mirrors, the light emitted from the transmitter is reflected in a number of times by the light guiding mirrors and to be received by the receiver so that a light traveling path constructs an extensive sensing network to make the control mechanism capable of responding immediately when the garage door is closing and subject to blockage to stop closing action and return to open state. Therefore, the safety is improved when people, cars or objects are moving in and out of a garage.
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Family
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Cited Art Landscape
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