Patent ID: 6792704
Filing Date: 2004-09-21
Classification: E01H

Abstract:
An air spring actuator apparatus comprising:a) an air spring means comprising flexible bellows having bead plates that that contain a column of air pressure b) an air pressure control means comprising a valve adapted to control air pressure c) two independent members, comprising a header means and an attachment means, the header means positioned at opposite ends of the air spring means, said header means oppose longitudinal expansion of said air spring means, at least one of said header means having a guide means, at least one of said header means having a strut means, the strut means affixed rigidly and substantially at 90 degrees to said header means, at least one of said strut means engaging the opposing header guide means and extending beyond said opposing header guide means to the attachment means, said strut means ensuring substantial alignment of said header means, whereby longitudinal expansion of said air spring means, in response to pressurized fluid, urges said header means apart, while concurrently said attachment means of one header means moves towards the opposing header means.