Communications: electrical – External condition vehicle-mounted indicator or alarm
Patent
1988-06-03
1989-08-08
Crosland, Donnie L.
Communications: electrical
External condition vehicle-mounted indicator or alarm
340436, 340437, 340665, 200 6141, 200 6142, 200 6144, 116 28A, G08G 100, B60Q 100
Patent
active
048557366
ABSTRACT:
A parking sensor having a base for attaching to a vehicle, a flexible probe for contacting an impending obstruction, a contact for producing an electrical signal responsive to deflection of the probe, a lamp, buzzer, or other transducer for indicating the electrical signal, and a filter for preventing operation of the transducer during spurious occurrences of the electrical signal. The filter can include a timer for activating the transducer when the electrical signal continues beyond a first interval, which can be from 0.05 to 1.0 second. Also, the timer prevents activation of the transducer beyond a second, longer interval that is typically 10 to 40 seconds for terminating the indication (and power drain) when further corrective action by an operator of the vehicle is unlikely. Further, a battery-powered radio transmitter on the base signals a receiver in the vehicle for driving the transducer, power to the transmitter being controlled by a limiter that can include the filter for preventing power drain except when the transducer is to be activated. The receiver can also be battery-powered and provided with a motion detector for breaking the receiver battery connection when the vehicle remains at rest. Separate front and rear transmitter units can operate on different signal frequencies for separately indicating front and rear contact with the obstruction.
REFERENCES:
patent: 2270687 (1942-01-01), Morse
patent: 2786910 (1957-03-01), Tyska
patent: 2813940 (1957-11-01), Poet
patent: 2847527 (1958-08-01), Wolters
patent: 2930862 (1960-03-01), Samaniego
patent: 2986113 (1961-05-01), Frees et al.
patent: 3990040 (1976-11-01), Gleitz et al.
patent: 4237446 (1980-12-01), Roberts
LandOfFree
Electronic parking sensor apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronic parking sensor apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic parking sensor apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-908689