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:
Sep. 30, 1986
Filed:
Oct. 26, 1984
John W Sullivan, Sidney, OH (US);
Airstream, Inc., Jackson Center, OH (US);
Abstract
A multi-axle suspension system for large motor homes, buses and like vehicles provides load dividing, improved vehicle stability and handling, a smoother ride and a driver selectable range of variable braking. The system also maintains an optimum chassis frame height under varying vehicle loading. A tag axle behind the vehicle drive axle includes a trailing arm which rotates upwardly or downwardly in response to an increase or decrease in vehicle loading. Such rotation operates a control linkage of a pressurized fluid control valve to supply additional fluid to or exhaust fluid from a spring device having supportive engagement with the vehicle chassis frame. A constant portion of the vehicle load is maintained on the tag axle at all times.