Hydraulic shock absorber and laboratory device

US10976192B2 · kind B2 · utility

Assignee

• SARTORIUS LAB INSTRUMENTS GMBH & CO. KG · DE

Inventors

• Winfried Graf · Göttingen, DE
• Malte Staender · Heiligenstadt, DE

Key dates

• Filing date: Mar 27, 2019
• Grant date: Apr 13, 2021
• Expiry date: Oct 18, 2039

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16M7/00
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A positioning foot having a hydraulic shock absorber with a fluid-filled hollow cylinder (210), in which a piston (220) that moves axially between an advanced, spring prestressed position and a retracted position. The piston separates a front axial fluid space (214) and a rear axial fluid space (215) from one another in the hollow cylinder. Both fluid spaces are connected to one another in a fluid exchanging fashion via at least one throttle opening (223) in the piston. The piston is rigidly connected to a piston rod (221), which passes through the front fluid space and abuts a fixed stop (218) 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. The spring prestress is dimensioned so that the weight of the device body moves the piston dampingly into the retracted position.