Communications: electrical – Selective – Having indication or alarm
Patent
1978-02-13
1979-11-27
Waring, Alvin H.
Communications: electrical
Selective
Having indication or alarm
340 61, 200 6145M, 180282, G08B 2100
Patent
active
041763408
ABSTRACT:
A device which automatically completes the circuit of the emergency flasher system in an automotive vehicle in response to a shock of predetermined magnitude (such shocks develop as a result of sudden application of brakes or in the event of an accident) has an upright cylindrical housing which is secured to the vehicle and contains a normally open multi-pole switch whose closing results in activation of the flasher system. The multi-pole switch can be closed by the plunger of a relay whose coil is in circuit with a normally open second switch adapted to be closed on tilting of an activating element having a permanent magnet which normally adheres to an iron plate in the housing but allows the activating element to change its position in response to the application of a shock. The tilted activating element effects the displacement of a post which temporarily closes the second switch to energize the coil which causes the plunger to close the multi-pole switch. The closed multi-pole switch completes a holding circuit for the relay. Such holding circuit can be opened by a normally closed manually operable switch. A normally open switch is connected in parallel with the second switch to activate the flasher system at the will of the operator.
REFERENCES:
patent: 3251033 (1966-05-01), Lawyer
patent: 3720915 (1973-03-01), Hass
patent: 3840088 (1974-10-01), Marumo et al.
Kontler Peter K.
Waring Alvin H.
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