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:
May. 30, 2000
Filed:
Apr. 22, 1998
Harvey J Kallenberger, Wind Lake, WI (US);
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Abstract
A dragline comprising a main housing, a moving mechanism for moving the main housing over the ground, and a planetary transmission driving the moving mechanism, the planetary transmission including a transmission housing, a sun gear, a ring gear and planet gears centered on a center axis, the planet gears meshing with the ring gear and the sun gear so that the planet gears rotate about the center axis, the planet gears drivingly connected to a carrier, the carrier including a low-friction coating on a carrier annular surface and a carrier cylindrical surface, the low-friction coating reducing friction between the carrier and the transmission housing.