Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
1997-10-09
1999-01-19
Hofsass, Jeffery A.
Communications: electrical
Condition responsive indicating system
With particular coupling link
340568, 340569, 340613, 340666, 340570, G08B 108
Patent
active
058618058
ABSTRACT:
Method and apparatus for effecting continuous automated querying of collection receptacles from a passing motor vehicle to ascertain whether articles have been deposited in each collection receptacle. Each collection receptacle has a detector capable of detecting whether at least one article has been placed within the collection receptacle, and a radio frequency transceiver. A motor vehicle provided for the purpose of collecting articles from the collection receptacles also has a transceiver. The transceiver of the motor vehicle continuously transmits a querying signal which is recognizable by the transceiver of each collection receptacle. When the detector has detected an article and a querying signal is received, the collection receptacle transmits an encoded response signal. This response signal is recognized by the transceiver of the motor vehicle, the identity of the transmitting collection receptacle is determined, and the results are annunciated to the operator of the motor vehicle. The detector or transceiver of the collection receptacle is reset after retrieval of articles deposited therein.
REFERENCES:
patent: 1336652 (1920-04-01), Otto
patent: 4314102 (1982-02-01), Lowe et al.
patent: 4794377 (1988-12-01), Benages
patent: 5239305 (1993-08-01), Murphy et al.
patent: 5448220 (1995-09-01), Levy
patent: 5657007 (1997-08-01), Anderson et al.
Hofsass Jeffery A.
Pope Daryl C.
Siemens Terrance L.
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