The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2008
Filed:
May. 06, 2005
John A. Hinz, Monticello, IN (US);
John A. Hinz, Monticello, IN (US);
Tuthill Corporation, Burr Ridge, IL (US);
Abstract
A lift axle suspension system for use on a vehicle having a chassis. The lift axle suspension system includes an axle assembly that is operably coupled to the vehicle chassis with a support arm assembly. A support biasing member is located between the axle assembly and the vehicle chassis for transferring loads between the axle assembly and the vehicle chassis. A lift spring member is also provided. The lift spring member is an air spring member and has one end that is pivotally mounted. Extension of the lift spring member lifts the axle assembly from a use position where the wheels attached to the axle assembly are engageable with a road surface to a storage position where the wheels attached to the axle assembly are not engaged with the road surface.