Adjustable-length compression spring

A compression spring comprises a casing (1) with a piston (12) that is mounted on a piston rod (8) being disposed for displacement therein. Two sectional casing chambers (15, 16) are provided in the casing (1), which are filled with pressure fluid and at least one of which is defined by the piston (...

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Bibliographic Details
Main Authors RICHTER, STEFAN, RIEL, HANS-WERNER, KNAPP, RAINER, WUNDERLING, GERHARD
Format Patent
LanguageChinese
English
Published 16.06.2005
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MEANS FOR DAMPING VIBRATION
MECHANICAL ENGINEERING
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
WEAPONS
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Summary:A compression spring comprises a casing (1) with a piston (12) that is mounted on a piston rod (8) being disposed for displacement therein. Two sectional casing chambers (15, 16) are provided in the casing (1), which are filled with pressure fluid and at least one of which is defined by the piston (12). A controllable first valve (20) interconnects the sectional casing chambers (15, 16) in an open position and blocks the compression spring in a shut-off position. By way of an additional automatic valve (41) between the sectional casing chambers (15, 16), the compression spring, even when blocked, can be adjusted in the direction of piston-rod extension (36a) by a force being applied that is comparable to the force of extension that works in the direction of extension (36a) by the pressure of the pressure fluid. This provides for greater flexibility in use of the compression spring.
Bibliography:Application Number: TW200392134363