Multimodal indicator safety device for ladder positioning

US8167087B2 · kind B2 · utility

Assignee

• The United States of America as represented by the Secretary of the Department of Health and Human Services, Centers for Disease Control and Prevention · US

Inventors

• Peter Simeonov · Morgantown, US
• Hongwei Hsiao · Morgantown, US
• John Powers · Phoenix, US

Key dates

• Filing date: Mar 9, 2009
• Grant date: May 1, 2012
• Expiry date: Mar 11, 2030

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E06C7/003
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A safety device for measuring and indicating the level of a ladder having rungs extending between a pair of elongated ladder rails, the safety device comprising a housing dimensioned to be inserted into one of the rungs of the ladder, an electronic sensor disposed in the housing, a controller disposed in the housing, which is in electronical communication with the sensor, at least one indicator, and a power supply for supplying power to the device. The electronic sensor measures the inclination of the ladder to produce a measured inclination which the controller compares to a stored predetermined level value to produce a comparison signal. The at least one indicator receives the comparison signal and indicates to the user the comparison signal.