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. 16, 2003
Filed:
Dec. 21, 2001
Bert C. Shelley, Cuba, MO (US);
Keith W. Meyer, Leasburg, MO (US);
ATRO Engineered Systems, Inc., Sullivan, MO (US);
Abstract
A bushing for a lift axle assembly for a heavy vehicle. The lift axle assembly selectively lowers and raises supplemental wheels of the vehicle into and out of engagement with a support surface and forms a part of the support system for the vehicle when the supplemental wheels are lowered. The assembly comprising at least one bushing. The bushing includes a hard polymeric sleeve having a wall thickness of about 0.1″ to about 0.3″ (0.25-0.76 cm) and a hardness of greater than Shore 65D. An elastomeric polyurethane sleeve surrounds the hard polymeric sleeve and is fixed to it. A metal shaft is rotatably mounted in the hard polymeric sleeve.