Hydraulic coupling bush

US11536404B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Steffen Knapper · Kleinglattbach, DE
• Frank Rieckhof · Ludwigsburg, DE
• Markus Grammer · Ludwigsburg, DE
• Reiner Kunz · Waldshut-Tiengen, DE

Key dates

• Filing date: Oct 21, 2021
• Grant date: Dec 27, 2022
• Expiry date: Oct 21, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L37/23
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic coupling bush which is actuated in order to close or open the coupling includes a coupling housing and a bush body which displaceable therein and which has a plug space for receiving a coupling plug, a supply space for fluidic connection to an external supply channel, a low pressure space for fluidic connection to a pressure medium sink, and an interior space connected fluidically to the supply space, a supply seat valve device being provided, via the actuation of which a supply flow path can be configured between the supply space and the plug space, and a relief seat valve device being provided, via the mechanical actuation of which the interior space can be relieved of pressure toward the low pressure space, and via the hydraulic actuation of which, which is dependent on the pressure in the interior space, the pressure in the interior space can be limited.