Hydraulic shock absorber and laboratory device

Laboratory device, comprising:

• a device body installed on a plurality of positioning feet attached to the device body,
• wherein at least one of the positioning feet comprises a fluid-filled hollow cylinder, in which a piston is configured to move axially between an advanced position supported with a spring prestress, and a retracted position counter to the spring prestress,
• wherein the piston separates a front axial fluid space and a rear axial fluid space from one another in the hollow cylinder,
• wherein both fluid spaces are connected to one another in a fluid exchanging fashion via at least one throttle opening in the piston,
• wherein the piston is rigidly connected to a piston rod, which passes through the front fluid space, and abuts a fixed stop in the retracted position, in which the volume of the rear axial fluid space is minimized and the volume of the front axial fluid space is maximized,
• wherein the spring prestress is dimensioned such that the weight of the device body, which exerts a load when the laboratory device is installed on the positioning foot, is sufficient to move the piston into the retracted position in a damped manner wherein the piston comprises in the piston side wall a plurality of throttle openings, which connect the axial fluid spaces, and of which the further the piston is moved out of the advanced position in the direction of the retracted position, the more are closed by an inner wall projection of the hollow cylinder, and
• wherein the inner wall projection rests against the piston side wall.