Integrated gearbox lube and control system

US9234576B2 · kind B2 · utility

Assignee

• Hamilton Sundstrand Corporation (HSC) · US

Inventors

• Timothy P. Walgren · Wales, US
• Dean A. Norem · Cherry Valley, US
• Charles L. DeGeorge · Suffield, US
• Alex Rak · Des Plaines, US
• Raymond N. Weyl · Lawndale, US
• Ricky D. Reimers · Rockford, US

Key dates

• Filing date: Dec 11, 2012
• Grant date: Jan 12, 2016
• Expiry date: Oct 4, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19163
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A gearbox system includes a gearbox having integrated therein a pump system, a plurality of fluid passages and a clutch control system. The pump system is in fluid communication with the clutch control system via the fluid passages to flow at least one pressurized stream. A first pressurized stream controls a first pressure-responsive device included in the clutch control system. The gearbox system further includes a hydro-mechanical control unit (HMCU) in fluid communication with the gearbox to receive a second pressurized stream and to generate at least one actuator control stream. The actuator control stream controls an actuator integrated in the gearbox.