Kendrion (villingen) Gmbh

Björn Bergfeld

Harald Burkart

Frank Zelano

Holger Brandenburg

Ralf Heingl

Joachim Flühs

Martin Ohnmacht

Wolfgang Bürk

Volker Lehmann

A pressure control valve for open-loop or closed-loop control of a pressure of a compressed fluid in a pilot pressure chamber includes a valve housing with at least one inlet and at least one outlet, a wall section fixedly connected with the valve housing and having a first passage channel and a first throughbore, through which the compressed fluid can flow, and forms a first valve seat. The pressure control valve also includes a tappet and first and second sealing elements. The tappet is mounted in the valve housing and movable along a longitudinal axis by an energizable actuation device. The first sealing element is mounted so as to be movable along the longitudinal axis in the valve housing and is biased by means of a first spring into a closure position in which the first sealing element bears against the first valve seat and closes the first through-bore.

Pressure control valve and device comprising such a pressure control valve, for open-loop or closed-loop control of the pressure of a compressed fluid in a pilot pressure chamber

A spring for a check valve which can be used in particular in controllable vibration dampers, said spring comprising a flat main body with a first surface, a second surface and a centre point, and two or more spring arms, which cooperate resiliently with the main body and in the unloaded state protrude from the first surface or the second surface, the spring arms forming a free end and having a longitudinal axis that runs through the free end and tangentially to a circle about the centre point of the main body. The invention further relates to a check valve having a spring of this kind. In addition, the invention relates to a controllable vibration damper which comprises such a check valve, and to a motor vehicle having a controllable vibration damper of this kind.

Spring for a check valve, check valve having a spring of this kind, controllable vibration damper having such a check valve, and motor vehicle having a controllable vibration damper of this kind

The present invention relates to a pressure control valve () for open-loop or closed-loop control of a pressure of a compressed fluid in a pilot pressure chamber (), comprising a valve housing () with at least one inlet () which can be fluidically connected to the pilot pressure chamber (), and at least one outlet (); a wall section () which is permanently arranged in the pressure control valve () and which wall section has a passage channel () through which the compressed fluid can flow, and forms a first valve seat (); a tappet () which is mounted in the valve housing () so as to be movable along a longitudinal axis (L) by means of an actuation device () that can be energized; a first sealing element () which forms a second valve seat (), is mounted in the valve housing () so as to be movable along the longitudinal axis (L) and is biased by means of a first spring () against the actuation direction (B) of the actuation device () into a closure position in which the first sealing element () bears against the first valve seat () and can be moved by the compressed fluid in the actuation direction (B); and a second sealing element () which is attached to the tappet (), the second valve seat () being arranged axially offset to the first valve seat () with respect to the longitudinal axis (L), and a second spring (), which biases the second sealing element () into the first position.

Pressure control valve and device comprising such a pressure control valve, for open-loop or closed-loop control of the pressure of a pressurized fluid in a pilot pressure chamber

A pressure control valve for controlling or regulating a pressure of a compressed fluid in a pilot pressure chamber includes a valve housing with at least one inlet which is fluidically connectable to the pilot pressure chamber, at least one outlet, a tappet mounted in the valve housing to be moved along a longitudinal axis by means of an actuation device that can be energized, and a first seal element which is mounted in the valve housing to move along the longitudinal axis and which is preloaded into a closed position by means of a first spring. The first seal element rests against a first valve seat in the closed position. The first seal element has a passage through which the compressed fluid can flow. A second seal element is secured to the tappet and can be moved by the energization of the actuation device.

Pressure control valve and device comprising such a pressure control valve , for controlling or regulating the pressure of a compressed fluid in a pilot pressure chamber

A coupling arrangement is provided and includes a first component, a second component, a press-on element, and an actuating unit, such that the second component can be displaced from a first position to a second position. The actuating unit includes an actuator and a lever rotatably mounted in the second component about an axis of rotation perpendicular to a longitudinal axis and having a contact surface to contact a fixed mating surface. The contact surface and/or the mating surface has a convex curvature, and the actuator and the lever cooperate such that the movement of the actuator along the longitudinal axis is converted into movement of the lever on the mating surface, and such that the second component is displaced along the longitudinal axis in the second position.

Cone friction clutch having an actuator and a lever for disengaging the clutch

A controllable shock absorber, in particular for motor vehicles, comprising a valve device comprising a bridge circuit with four non-return valves which are connected crosswise in the forward direction, the connection of a first bridge branch with two non-return valves that are arranged opposite each other form a pressure chamber and the connection of the second bridge branch with two non-return valves arranged opposite each other form a low pressure chamber, a hydraulic main slide arranged between the low pressure chamber and the pressure chamber, a pilot chamber which is connected to the pressurised fluid line which is part of the upper working space (traction area) by means of a fifth non-return valve, and a pilot valve which connects the low pressure chamber to the pilot chamber, the pilot chamber being connected to the high-pressure chamber by means of a diaphragm.

Controllable vibration damper

An electromagnetic switch valve for opening or closing an oil or coolant circuit in a motor vehicle, having an electromagnet, which has a coil and a movable armature, wherein the armature is coupled to a valve element, via which a valve seat in the coolant circuit can be sealed, wherein the switch valve is designed to be pressure balanced, and the valve element, pointing in the direction of the valve seat, is designed to be at least approximately hollow-walled.

Electromagnetic solenoid valve

The application provides a damping adjusting system having a guide tube which is arranged in an outer housing and which comprises a lateral outer wall. The interior of the guide tube being delimited at the end face by a base part. The guide tube can also have a magnet coil; an electromagnetically movable armature which is guided in the guide tube along a movement axis; an exterior which surrounds the outer housing; and a ventilation bore which connects the interior to the exterior and which is guided through the base part and the outer housing. The ventilation bore has two interconnected sections. A first section is guided through the base part and the first section has a first opening arranged on the base part on the interior side and a second opening arranged on the lateral outer wall, and a second section is guided through the outer housing.

Growing community of inventors

Balingen-Endingen, Germany

Björn Bergfeld