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:
Dec. 24, 2013
Filed:
May. 09, 2011
Michael G. Benco, Onalaska, WI (US);
William E. Lapp, La Crosse, WI (US);
Derrick J. Lepak, La Crosse, WI (US);
Arther L. Butterworth, La Crosse, WI (US);
David Janda, Onalaska, WI (US);
Dennis R. Dorman, La Crosse, WI (US);
Michael G. Benco, Onalaska, WI (US);
William E. Lapp, La Crosse, WI (US);
Derrick J. Lepak, La Crosse, WI (US);
Arther L. Butterworth, La Crosse, WI (US);
David Janda, Onalaska, WI (US);
Dennis R. Dorman, La Crosse, WI (US);
Trane International Inc., Piscataway, NJ (US);
Abstract
An assembly includes a composite metal-polymer bushing having an outer metal layer with an inner surface, metal particles sintered to the inner surface, a polymer material between the metal particles, a finished interior surface collectively defined by the polymer material and exposed portions of the metal particles, a plurality of interstices formed between the metal particles and the polymer material, and a plurality of ridges defined by the polymer material that protrude above the metal particles. The ridges occupy at least about 8% of the area of a cylindrical reference surface nominally coinciding with the finished interior surface. The assembly also includes a crankshaft having a journal at least partially received within the bushing and supported by the finished interior surface. The journal is polished to a surface finish of about 0.1 microns or less to reduce a wear rate of the bushing.