Cutting sound enhancement system for mining machines

US5121365A · kind A · utility

Assignee

• The United States of America, as represented by The Secretary of The Interior · US

Inventors

• Michael C. Leigh · West Newton, US
• August J. Kwitowski · Jefferson Hills, US

Key dates

• Filing date: Jan 24, 1991
• Grant date: Jun 9, 1992
• Expiry date: Jan 24, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G01S3/801
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A cutting sound enhancement system (10) for transmitting an audible signal from the cutting head (101) of a piece of mine machinery (100) to an operator at a remote station (200), wherein, the operator using a headphone unit (14) can monitor the difference in sounds being made solely by the cutting head (101) to determine the location of the roof, floor, and walls of a coal seam (50).