Nicholas L O'Connor

US Patent:

20200173558, Jun 4, 2020

Filed:

Dec 4, 2018

Appl. No.:

16/209321

Inventors:

- Deerfield IL, US
John M. Mashak - Peoria IL, US
Scott Rice - Gilford NH, US
Tyler J. Davis - Washington IL, US
Nicholas O'Connor - Loudon NH, US

Assignee:

Caterpillar Inc. - Deerfield IL

International Classification:

F16J 15/3236
F16C 33/74
F16J 15/3284
F16C 3/14

Abstract:

A shaft seal for disposition between a shaft mounted for rotation and a bore includes a radial shaft-sealing sleeve assembly rotatably mounted with an outer carrier assembly. The radial shaft-sealing sleeve assembly includes a radial shaft-sealing sleeve and a first contact exclusion lip. The outer carrier assembly includes an outer carrier with a molded seal along having an outer radial section of the outer carrier and an elongated molded seal lip extending into a chamber formed between the radial shaft-sealing sleeve and the outer carrier, a second contact exclusion lip, and a main pumping lip. The first contact exclusion lip forming a dynamic seal against the outer carrier, and the second contact exclusion lip and main pumping lip forming dynamic seals against the radial shaft-sealing sleeve.