Seal assembly for track pin joint assembly

US8678696B2 · kind B2 · utility

Assignee

• Caterpillar Inc. · US

Inventors

• Eric James Johannsen · Washington, US
• Roger L. Recker · Dunlap, US
• Jason L. Sebright · Chillicothe, US
• Mark J. Kiesel · Peoria, US
• Guanghui Liang · Dunlap, US
• Mark S. Diekevers · Nashville, US

Key dates

• Filing date: Mar 30, 2011
• Grant date: Mar 25, 2014
• Expiry date: Oct 26, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16B2200/60
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A seal assembly can be incorporated into a track pin joint assembly including a pin defining a longitudinal axis, a first member and a second member both coaxial with the pin about the longitudinal axis. The first member is pivotable about the longitudinal axis with respect to the second member and includes a load ring engagement surface defining, at least in part, an axially-extending seal cavity disposed in proximal relationship to the second member. A seal assembly including a seal ring and a load ring is disposed in the seal cavity and sealingly engages the first member and the second member. At least one of a load ring engagement surface of the first member and an axial segment of a first member engagement surface of the load ring includes a convex rounded portion extending over at least half the axial length thereof.