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:
Feb. 21, 2023
Filed:
May. 21, 2020
Caterpillar Inc., Peoria, IL (US);
Swetha Suresh, Chennai, IN;
Brian Stuart Skauge, Peoria, IL (US);
David Hakes, Princeville, IL (US);
Chetan Vilas Dahiwal, Chennai, IN;
Timothy A Thorson, Morton, IL (US);
Gary Clifford Yerby, Morton, IL (US);
Geoffrey Damien Chovanec, Dunlap, IL (US);
Thomas John Yaniak, Washington, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An isolated lubrication system for a drill bit is disclosed. The system comprises a body having a cutting arm with a journal and a rotary cutter mounted on the journal. The system also comprises a reservoir in a body to contain a fluid lubricant that isolated from communication outside the body. The system also comprises multiple conduits in communication with the reservoir and with respect to each other. The multiple conduits facilitate lubrication between the journal and the rotary cutter, including the bearings, by means of a gravitational force and/or a centrifugal force acting of the fluid lubricant. Further, the system comprises a sealing system. The sealing system includes a sealing cap provided to the reservoir, a seal provided between the journal and the rotary cutter, and a stepped passageway provided in a clearance between the rotary cutter and a cutting arm of the body.