192 clutches and power-stop control – Vortex-flow drive and clutch – With brake
Patent
1985-05-10
1987-04-28
Bonck, Rodney H.
192 clutches and power-stop control
Vortex-flow drive and clutch
With brake
192 9, 303 9, B60K 4126
Patent
active
046606963
ABSTRACT:
A brake system for a construction vehicle which ensures the safety of the vehicle when it is parked on a sloping road and started again, and enables the vehicle to get away for itself from a dangerous place where it has been brought to an emergency stop. It includes a battery relay which is closed if a main switch is turned on, a parking brake switch provided with a self-holding relay, an emergency brake switch and a solenoid valve for a parking brake. The parking brake switch, emergency brake switch and solenoid valve are connected in series to a power source via the battery relay one after another. The system may further include a parking brake relay connected between the battery relay and the solenoid valve and adapted to close if the emergency brake switch is closed when an electric current can flow through the parking brake switch, and a neutralizer relay connected between the battery relay and a direction circuit for a transmission gear in the vehicle and adapted to close when an electric current can flow through the parking brake switch.
REFERENCES:
patent: 3634697 (1972-01-01), MacFarlane
patent: 3982792 (1976-09-01), Nakajima
patent: 3985210 (1976-10-01), Hodge et al.
patent: 4088208 (1978-05-01), Goode
patent: 4175635 (1979-11-01), Thomas
patent: 4451865 (1984-05-01), Warner et al.
Bonck Rodney H.
Kabushiki Kaisha Komatsu Seisakusho
Testardi David A.
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