Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 25, 2009
Patent Application Number
11179830
Date Filed
July 11, 2005
Patent Primary Examiner
Patent abstract
An apparatus for automatic lifting of a trailer frame upon failure of the leaf spring support comprising a housing including a first housing element and a second housing element, wherein the second housing element is positioned within and slidably coupled to the first housing element forming the housing; an air bag lifting device positioned within the housing, wherein upon actuation the lifting device exerts force to maintain a distance between the first housing element and the second housing element; and a trigger device coupled to the lifting device wherein the lifting device is actuated by the trigger device.
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