The invention relates to a vehicle cab or a vehicle seat comprising an upper part and a lower part which are vertically spring-mounted relative to one another by means of at least one height-adjustable scissor-action frame comprising two scissor arms which are pivotable about a common axis, and at least one air spring having a variable air volume, it being possible for movements of the scissor-action frame to be transmitted to a switching element, by means of a transmission element that is mechanically operatively connected to the scissor-action frame, in order to control the air volume of the air spring, wherein a height-adjustment device for the scissor-action frame, comprising a manually actuable control lever element and a guide element that is mechanically operatively connected thereto, the switching element being able to be pivoted about a first axis of rotation and the transmission element being able to be pivoted about the first axis of rotation in the opposite direction to the switching element by means of the guide element, in order to change a neutral position of the switching element that is between two switches provided for controlling an air volume of the air spring.

An air cushion arrangement installable in an interior of a seat having a seat surface may have at least one air cushion and an air supply system for variably supplying the at least one air cushion with air, wherein at least one air cushion is assigned a pulsation generator, the at least one air cushion being non-fluidically connected to the pulsation generator. The air cushion and the pulsation generator are configured to generate a pulsation in a direction of the seat surface of the seat (e.g., if the air cushion arrangement were installed in the interior of the seat). A seat assembly including such an air cushion arrangement is also disclosed.

A pressure reducer, comprising an outer cylinder with a first air supply connector on a first end side of the outer cylinder and a second air supply connector on a second end side of the outer cylinder is provided. A piston can be guided movably in the outer cylinder. A first air chamber is arranged between the first air supply connector of the outer cylinder and the first front surface of the piston, and a second air chamber is arranged between the second air supply connector of the outer cylinder and a second front surface of the piston. The surface areas of the two front surfaces of the piston are of different size. The pressure reducer is suitable for reducing a second air pressure which prevails in the second air chamber in a pulsed manner proportionally to a first air pressure which prevails in the first air chamber, by a first air connection.

A ride height adjustable oil damped air shock boat seat pedestal with selectively lockable swivel capability is shown, which includes a locking pin extending below the seat and moving up and down with the seat as permitted and controlled by the air shock. The locking pin being received by a structure, which limits rotation of the seat.

Vehicle vibration device for a vehicle seat or a vehicle cabin comprising a lower part and an upper part mounted resiliently with respect to the lower part by means of a damping device, the upper part being mounted suspended on the lower part by means of at least one pivot mounting, the at least one first pivot mounting comprising at least one first lever, the first end of which is attached to the lower part by means of a first pivot axis and the second end of which is attached to the upper part by means of a second pivot axis, the second end being positioned below the first end in a vertical direction, at least one dimension of the upper part and/or at least one dimension of the lower part being variable by means of an adjustment device so as to vary the position of the first lever.

Vehicle vibration device for a vehicle seat or a vehicle cabin, comprising a lower part and an upper part which is resiliently mounted relative to the lower part by a damper means, wherein the upper part is mounted in a suspended manner on the lower part by means of at least one pivot bearing, wherein the at least one first pivot bearing comprises at least one first lever, the first end of which is attached to the lower part by a first pivot axis and the second end of which is attached to the upper part by a second pivot axis, wherein the second end is located below the first end when viewed in a vertical direction, wherein at least the position of the first end of the lever can be changed by an adjustment means.

A method performed by one or more processing devices for ensuring that a vehicle seat top is qualified for use with a seat base for a vehicle seat, the method comprising: receiving information that identifies a type of vehicle seat top for coupling to the seat base; verifying that the vehicle seat top is authorized for use with the seat base; and in response to verifying, retrieving, based on the received information that identifies the type of vehicle seat top, pre-determined values of controller parameters of a closed loop control system for isolating vibrations from the vehicle seat top, wherein the predetermined values of the controller parameters are specifically tuned for the vehicle seat top.

An air spring has an air-spring lobe made of elastomer material, which is clamped at the lobe ends thereof via connection parts between the sprung mass and the unsprung mass and is connected by way of the connection parts to the fastening parts of the sprung and the unsprung mass. The connection parts and the air-spring lobe enclose the working chamber that is under internal pressure and contains the air-spring volume. The working chamber is in connection with at least one air connection provided in the connection parts. At least one of the connection parts is connected to the associated fastening part by a releasable snap-in or latching connection and the snap-in or latching connection includes at least one air connection, to which a feed line or a hose for the compressed air supply is connected.

The invention relates to a shock absorber with a housing, an inner pipe arranged in the housing, a piston rod, a piston which is arranged at that end of the piston rod, and which piston divides the interior of the inner pipe into a lower chamber and an upper chamber, a first valve arrangement which is arranged on the piston, and a third valve arrangement which is arranged at the lower end of the inner pipe and by means of which the working medium which is held in the interior of the housing, serving as a tank, can flow out of the interior of the housing, only into the lower chamber when the piston moves in the inner pipe. The shock absorber is distinguished by the fact that a hydraulic pump drive is arranged between a first connection element of the lower chamber of the inner pipe and a second connection element at the upper chamber of the inner pipe.

A seat air bladder assembly is provided with at least one central air bladder region having a support surface. At least one pair of lateral air bladder regions extend from opposed sides of the at least one central bladder region. The at least one pair of lateral air bladder regions are oriented at a non-zero angle to incline laterally and support a thoracic region of a seat occupant. A seat assembly is provided with a seat back with a contact surface with a thoracic region. An air bladder assembly is oriented within the thoracic region of the seat back with a support surface that is reclined relative to the contact surface to provide support, and wedge-shaped so that during inflation the air bladder assembly inflates in an upward and forward direction relative to the seat back.