Dual height airspring having adjusted spring rate

An air spring (10) having a relatively low and a relatively high spring height includes a retainer (12), a base housing, an elastomeric sleeve (16) secured to the retainer (12) at a first end (20) and secured to the base housing at a lower end (22) to form a chamber (24), the elastomeric sleeve (16)...

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Bibliographic Details
Main Author SCHISLER, ROBERT CHARLES
Format Patent
LanguageEnglish
French
German
Published 11.05.2005
Edition7
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
PERFORMING OPERATIONS
SHOCK-ABSORBERS
SPRINGS
THERMAL INSULATION IN GENERAL
TRANSPORTING
VEHICLE SUSPENSION ARRANGEMENTS
VEHICLES IN GENERAL
WEAPONS
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Summary:An air spring (10) having a relatively low and a relatively high spring height includes a retainer (12), a base housing, an elastomeric sleeve (16) secured to the retainer (12) at a first end (20) and secured to the base housing at a lower end (22) to form a chamber (24), the elastomeric sleeve (16) expanding from a relatively collapsed configuration at the low air spring height into an expanded configuration at the high air spring height. A confined bladder (18) is disposed within the chamber (24), the bladder being inflatable to displace a variable portion of an expanded volume within the sleeve chamber (24) at the high air spring height. The spring rate of the air spring (10) is adjusted by an adjustment to the volume of air displaced by the inflated bladder (18) within the sleeve chamber (24) and by overpressurizing the bladder (18) relative to the air spring sleeve (16), whereby the air spring (10) is adapted to provide a relatively low spring rate at the lower height and a relatively high spring rate at the higher height.
Bibliography:Application Number: EP20040105317