The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 15, 2009
Filed:
Nov. 04, 2005
George M. Anasis, Lewis Center, OH (US);
Robert E. Eddy, Johnstown, OH (US);
Gary E. Ingram, Lady Lake, OH (US);
Jean-francois Desmedt, Herbais, BE;
George M. Anasis, Lewis Center, OH (US);
Robert E. Eddy, Johnstown, OH (US);
Gary E. Ingram, Lady Lake, OH (US);
Jean-Francois DeSmedt, Herbais, BE;
Sky Climber, LLC, Delaware, OH (US);
Abstract
A powered controlled acceleration suspension work platform hoist system for raising and lowering a work platform at a predetermined acceleration. The system incorporates several hoists attached to the work platform and in electrical communication with the motor control system. The motor control system is attached to the work platform and is in electrical communication with a constant frequency input power source and the hoist motors. The motor control system controls the acceleration of the work platform as it is raised and lowered by controlling the hoist motors. The controlled acceleration hoist system also includes a platform control system attached to the work platform that is in electrical communication with the motor control system and the hoist motors. Acceleration control is achieved by converting the constant frequency input power to a variable frequency power supply. This may be accomplished through the use of a variable frequency drive(s).