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:
Oct. 23, 2018
Filed:
Dec. 18, 2013
Brunswick Corporation, Lake Forest, IL (US);
Emil S. Golen, Jr., Barrington, IL (US);
Young Chul Kim, Hickory Hills, IL (US);
Jenny Slifko Manago, Gurnee, IL (US);
Brunswick Corporation, Mettawa, IL (US);
Abstract
Stair climber apparatuses have a control circuit that controls the speed and torque of an electric motor and controls an output torque direction of the electric motor. The control circuit controls the speed of the electric motor and the output direction of the electric motor to maintain a constant speed of travel of a plurality of stairs in a downward direction along an inclined support when an operator is stepping on the plurality of stairs in an upward direction. When a change in output torque direction of the electric motor torque is required to maintain the constant speed of travel of the plurality of stairs in the downward direction along the inclined support, the control circuit controls the speed of the electric motor down to a zero speed. Methods are for operating the stair climber apparatuses.