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:
Mar. 09, 2004
Filed:
Mar. 09, 2001
Ronald E. Smith, Pleasant Lake, IN (US);
Auburn Gear, Inc., Auburn, IN (US);
Abstract
An integrated drive unit having planetary gearing and an annular cone brake element affixed to a hydraulic motor barrel. A brake piston encircles the hydraulic motor barrel and is selectively engageable with the cone brake element to actuate the cone brake element into frictional contact with the spindle of the integrated drive unit to act as a safety/parking brake. The cone brake element is formed of a bronze-type powdered metal of sufficient durability to withstand dynamic braking. The hydraulic motor is selectively connectable to a transmission including planetary gearing. The planetary gearing of the present invention includes a planet gear carrier having carrier pins formed of a relatively low carbon steel and locally hardened over the area on which the planet gears will be supported. In an alternative embodiment, a carrier pins sleeve formed of VESPEL is utilized as the bearing between the planet gear and the carrier pin.