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US 7,886,882 B2Granted
Pneumatic spring damper unit
AssigneeContinental Aktiengesellschaf
InventorsChristof Behmenburg, Heinz Job, Thomas Engelke, Jörg Kock, Hermann Hoinkhaus
Life of this patent
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AssigneeContinental Aktiengesellschaf
InventorsChristof Behmenburg, Heinz Job, Thomas Engelke, Jörg Kock, Hermann Hoinkhaus
Estimating the term…
Disclosed is a gas spring/damper unit (1) having at least one movably mounted displacement piston (2) and two displacement chambers (3, 4) whose volume increases or diminishes according to the direction of travel of the displacement piston (2) and which are interconnected via overflow ducts (6, 7) in which throttle valves (16, 16′, 16″, 17, 17′, 17″, 17″′) are disposed. Several throttle valves (16, 16′, 16″, 17, 17′, 17″, 17″′) having different valve characteristics are positioned so as to be effective in one direction of flow. One throttle valve (17) is designed for damping eigenfrequencies ranging from 1 to 1.5 Hz while another throttle valve (17′) is designed for damping eigenfrequencies ranging from 10 to 40 Hz.
A pneumatic spring damper unit (1) with an extensionstage and a compression stage, having at least one moveably mounted expeller piston (2) and two expeller chambers (3, 4) whose volumes are increased or decreased depending on the direction of movement of the expeller piston (2) and which are connected to one another by means of overflow ducts (6, 7) in which a plurality of unidirectional throttle valves (16, 16′, 16″, 17, 17′, 17″, 17″′) are arranged with differing valve characteristics, with at least one of the throttle valves (17) being configured to damp natural frequencies in the range from 1 to 1.5 Hz, and at least one other throttle valve (17′) being configured to damp natural frequencies in the range from 10 to 40 Hz,
Dependencies are inferred from the claim text.