Communications: electrical – Land vehicle alarms or indicators – For trailer
Patent
1994-08-25
1997-07-22
Hofsass, Jeffery
Communications: electrical
Land vehicle alarms or indicators
For trailer
2502061, 307 91, G08B 2100
Patent
active
056507640
ABSTRACT:
A visual aid for assisting a driver backing up a towing vehicle to a drawn vehicle. A visual display includes a flat screen upon which are depicted images in the form of silhouettes or like simulations of the respective vehicles. This effect is provided by partially and selectively illuminating the screen. A sensor is placed on at least one of the vehicles for detecting relative alignment therebetween and proximity thereof. The sensor generates a signal which controls the screen. The silhouettes are moved on the screen in proportion to the actual relationship of the two vehicles. In a preferred embodiment, the image of the towing vehicle is stationary, and the image of the drawn vehicle moves responsive to input from the sensor. The sensor may employ an emitting coil and an induction coil, or may be of the reflected energy type, such as radar and infrared radiation. The display control preferably comprises a microprocessor. The visual aid has an on-off switch, a proximity readout, and an alarm annunciating the presence of an object interposed between the tow vehicle and the draft vehicle.
REFERENCES:
patent: 3825921 (1974-07-01), Marus et al.
patent: 3924257 (1975-12-01), Roberts
patent: 4187494 (1980-02-01), Jessee
patent: 4703820 (1987-11-01), Reinaud
patent: 4854604 (1989-08-01), Stallsworth
patent: 4938495 (1990-07-01), Beasley et al.
patent: 5108123 (1992-04-01), Rubenzik
patent: 5180182 (1993-01-01), Haworth
patent: 5191328 (1993-03-01), Nelson
patent: 5195144 (1993-03-01), Le Parquier et al.
patent: 5253050 (1993-10-01), Karasudani
patent: 5269554 (1993-12-01), Law et al.
patent: 5281947 (1994-01-01), Durley et al.
patent: 5289321 (1994-02-01), Secor
patent: 5321255 (1994-06-01), Kakinami et al.
patent: 5455557 (1995-10-01), Noll et al.
Edwards, Jr. Timothy
Hofsass Jeffery
LandOfFree
Trailer alignment device with visual display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trailer alignment device with visual display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trailer alignment device with visual display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1562580