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Patent Searching and Data


Title:
PARK RELEASE VALVE FOR A TRAILER VEHICLE
Document Type and Number:
WIPO Patent Application WO/2018/006991
Kind Code:
A8
Abstract:
The invention relates to a park release valve for a trailer vehicle having a pneumatic brake system, and for controlling the pressure in spring-loaded brake cylinders, and having the following features: a) a connection for supply pressure, a connection for reservoir pressure, an output for ventilation, a connection as pressure output, b) a control piston for opening and blocking a connection from the connector for reservoir pressure to the connector as pressure output and for opening and blocking a connection from the output for ventilation to the connection as pressure output, c) the control piston is movable by an operating element between a travel position and a park position, wherein in the park position the connection from the output for ventilation to the connection as pressure output is opened and the connection from the connection for reservoir pressure to the connection as pressure output is blocked, d) the control piston is loaded in the park position and without pressure on the connector for supply pressure by a slider having an axially acting force in a direction from the travel position to the park position, e) in the event of pressure on the connector for supply pressure an axial force acts on the slider in a direction from the park position to the travel position of the control piston.

Inventors:
CUYX MARK (BE)
SIEKER ARMIN (DE)
STENDER AXEL (DE)
Application Number:
PCT/EP2017/000731
Publication Date:
December 27, 2018
Filing Date:
June 23, 2017
Export Citation:
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Assignee:
WABCO EUROPE BVBA (BE)
International Classes:
B60T15/02; B60T13/26
Attorney, Agent or Firm:
KOSCHNITZKI, Thomas (Am Lindener Hafen 21, Hannover, DE)
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