Device for controlling a motor-driven hoist

US6595493B2 · kind B2 · utility

Assignee

• Demag Cranes & Components GmbH · DE

Inventors

• Wolfgang Krebs · Wetter, DE
• Anton Munzebrock · Dortmund, DE

Key dates

• Filing date: Mar 12, 2001
• Grant date: Jul 22, 2003
• Expiry date: May 11, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G08C23/04
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A device for controlling a motor-driven hoist, includes a housing and a control unit supplied with electric energy from a power source and secured to the housing. The control unit has control elements operable from outside the housing between an inactive ready position and an active position for delivering control signals. A transmitter is supplied with electric energy from the power source and receives the control signals from the control unit for wireless transmission of the control signals to a receiver, which is operatively connected to a power controller of the drive of a motor-driven hoist. An activation switch is so operatively connected to the power source that actuation of a control element initiates a supply of electric energy from the power source, whereas the supply of electric energy from the power source is cut, when the control elements occupy their ready position.