Electric parking brake

US11511718B2 · kind B2 · utility

Assignee

• KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH · DE

Inventors

• Gerhard Wieder · Besigheim, DE
• Friedbert Röther · Cleebronn, DE
• Frank Schwab · New York, US
• Falk Hecker · Aichholzhof, DE
• Michael Herges · Munich, DE

Key dates

• Filing date: Aug 7, 2018
• Grant date: Nov 29, 2022
• Expiry date: May 30, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2201/10
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An electric-parking-brake for a utility-vehicle, including: a feed-line for brake-pressure air; a discharge-line for brake-pressure air for a pneumatic-brake-device; a first-valve and a second-valve, each being switchable between a stable-state and an activated-state in response to electrical control-signals; and a valve-device which is connected between the feed-line and the discharge-line and exhibits a control-input, the valve device being switchable between a stable-state and an activated-state in response to control signals at the control-input, the feed-line being connected to the discharge-line in the activated-state, in which the first-valve in the stable-state or in the activated-state connects the control-input of the valve-device to the discharge-line, to retain a current-state of the valve-device when the brake-pressure air is applied to the discharge-line, and in the activated or stable state connects the control-input to the second-valve. Also described are an electric parking brake system, a utility vehicle, and a related method.