Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
1999-11-15
2001-04-24
Hofsass, Jeffery (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C340S870030, C340S870030, C455S422100, C455S528000
Reexamination Certificate
active
06222458
ABSTRACT:
FIELD OF INVENTION
The present invention relates to automatic detection of radio devices at a station for delivery of combustible materials. More specifically, the present application describes techniques of detecting a cell phone at a gas station.
BACKGROUND
Concerns have recently been raised about the safety of cellular phones around combustible materials. At least one highly-publicized report has indicated that an operating cellular phone could cause an explosion at a gas station.
Defense against this issue could be difficult. Gas stations are often un-staffed, or minimally staffed. The attendants often stay within a burglary-protected area. The attendants are often not able or not motivated to adequately police whether a cellular phone or other radio transmitting device is being used.
SUMMARY
The present application teaches protection against use of a radio device, such as a cellular phone, at a combustible delivery station such as a gas station.
The protection can be via detection and/or prevention. Another aspect of the invention teaches automatic turn off of a cellular phone is also contemplated.
A first aspect uses a wireless protocol to detect an operating cellular phone.
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“Cell phones can ignite gasoline?”, News from GEEK.com, pp. 1 and 2, Oct. 8, 1999.
Harris, Esq Scott C.
Hofsass Jeffery
Pham Toan
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