Parking brake device of vehicle

Details Parking brake device of vehicle Parking brake device of vehicle

2007-09-25

2007-09-25

Williams, Thomas (Department: 3683)

Brakes

Operators

Spring

C188S265000, C303S071000, C303S073000, C303S089000

Reexamination Certificate

active

11009332

ABSTRACT:
A hydraulic parking brake device is selectively switched between a braking state and a non-braking state. A braking force decreases as a pressure in the control oil chamber increases and increases as the pressure in the control oil chamber decreases. The device includes a discharged oil restrictor located in a discharge passage and an accumulator connected to the control oil chamber. The accumulator is capable of releasing hydraulic oil to the control oil chamber when the braking force is greater than that at the time when the parking brake device is switched from the non-braking state to the braking state and the braking force can further be increased during the braking state of the parking brake device. Thus, the parking brake device can gradually brake the vehicle from the running state.

REFERENCES:
patent: 3724609 (1973-04-01), Kobald
patent: 3802746 (1974-04-01), Walser
patent: 5601160 (1997-02-01), Horsch
patent: 5648644 (1997-07-01), Nagel
patent: 5779325 (1998-07-01), Diesel
patent: 6105738 (2000-08-01), Christen
patent: 2003/0090148 (2003-05-01), Eliasson
patent: 2005/0279593 (2005-12-01), Uphues
patent: 1 217 747 (1970-12-01), None
patent: 46-045267 (1973-01-01), None
patent: 51-123480 (1976-10-01), None
patent: 59-145445 (1984-09-01), None
patent: 61-3164 (1986-01-01), None
patent: 62-194172 (1987-12-01), None
patent: 63-111361 (1988-07-01), None
patent: 5-44739 (1993-06-01), None
patent: WO 2003080413 (2003-12-01), None
Hideaki Shima, “Development of the Wet Disc Brake System for Battery Fork Lift Truck”, Toyota Technical Review No. 46, Jan. 2003 pp. 18-21.

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