Improper towing alarm device

Details Improper towing alarm device Improper towing alarm device

1990-04-16

1991-07-02

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340431, B60Q 1900

Patent

active

050289071

ABSTRACT:
An alarm system for indicating improper towing of a vehicle having a standard transmission may embody up to two control switches in series electrical communication which are operable to activate a warning light and/or buzzer mounted within the interior of the towing vehicle. When towing a four wheel vehicle, it is desirable to make sure that the steering is not locked and also that the vehicle is not in gear. The first control switch comprises a normally open toggle switch which closes to activate the alarm circuit when the ignition switch is in the locked or not-turned-on position. The second independently operable control switch is fluid pressure activated and is opened in response to the detection of oil pressure resulting from the towed vehicle being in gear.

REFERENCES:
patent: 3710370 (1973-01-01), Quilici et al.
patent: 4127855 (1978-11-01), Toner
patent: 4430637 (1984-02-01), Koch-Ducker et al.
patent: 4593264 (1986-06-01), Engle
patent: 4642604 (1987-02-01), Glesmann et al.

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