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. 17, 2013
Filed:
Dec. 07, 2009
Curtis Modtland, Lake Jackson, TX (US);
Hua Bai, Lake Jackson, TX (US);
Curtis Modtland, Lake Jackson, TX (US);
Hua Bai, Lake Jackson, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The present disclosure relates to bearings, for example, an improved journal bearing. A bushing () for use with a journal bearing () includes: a cylindricarinterior defining an interior bearing surface (); a longitudinal axis () and an internal diameter (ID); a groove region of the interior bearing surface () having a length H along the longitudinal axis; and a set of grooves () in the grooved region of the interior bearing surface (), where N is the number of grooves in the set of grooves (). Each groove is disposed at a helix angle (θ) offset from the longitudinal axis () of the bushing (). The helix angle is approximately equivalent to the following equation: tangent (θ)=(π×ID)/(N×H).