Device for controlling breaker in construction vehicles

Details Device for controlling breaker in construction vehicles Device for controlling breaker in construction vehicles

1996-12-10

1998-08-18

Leja, Ronald W.

Electrical transmission or interconnection systems

Vehicle mounted systems

307 101, 307 31, 307 38, 200 82B, F02M 3900

Patent

active

057961743

ABSTRACT:
A device for controlling a breaker in construction vehicles is disclosed. The device includes a control circuit provided with a power supply, a first solenoid valve used for controlling the breaker, and a second solenoid valve used for boosting the relief pressure of the circuit. The device also includes a control switch and a select switch. The control switch is installed in a control lever and is handled by an operator in order to selectively open or close the control circuit. Meanwhile, the select switch is connected between the control switch, power supply and first and second solenoid valves. The select switch selectively connects the power supply to the first or second solenoid valve in order to select either of the breaker and pressure boosting operations, which are commonly controlled by the control switch.

REFERENCES:
patent: 4101746 (1978-07-01), Grieger et al.
patent: 4125885 (1978-11-01), Lowther et al.
patent: 4350319 (1982-09-01), Kawata et al.
patent: 4572963 (1986-02-01), Nakano et al.
patent: 4643146 (1987-02-01), Spiessler
patent: 4841159 (1989-06-01), Evans et al.
patent: 4889466 (1989-12-01), Jindai et al.
patent: 5502290 (1996-03-01), Koyanagi et al.
patent: 5528335 (1996-06-01), Terunuma

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