Over-running clutch pulley with increased surface microhardness

US7191880B2 · kind B2 · utility

Assignee

• NTN CORPORATION · JP

Inventors

• Mary-Jo Liston · Iron River, US
• John R. Miller · Shaker Heights, US
• Robert W. Frayer, Jr. · Gregory, US
• Randall King · Kingwood, US
• Russell E. Monahan · Ann Arbor, US
• William D. Allison · Grosse Pointe Farms, US

Key dates

• Filing date: May 31, 2001
• Grant date: Mar 20, 2007
• Expiry date: May 31, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49453
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The over-running clutch pulley (10) of a preferred embodiment of the invention includes a sheave member (20), a hub member (22) located substantially concentrically within the sheave member, and a clutch member (24), which cooperate to rotationally engage an input device (12) and an output device (14). The sheave member preferably includes a sheave input section (26) adapted to engage the input device, and a sheave clutch section (28) defining a sheave clutch surface (30). Similarly, the hub member preferably includes a hub output section (32) adapted to engage the output device, and a hub clutch section (34) defining a hub clutch surface (36). In the preferred embodiment, either the sheave clutch surface, the hub clutch surface, or both, have a surface microhardness greater than the hub output section.