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. 22, 2015
Filed:
Mar. 11, 2013
The Chamberlain Group, Inc., Elmhurst, IL (US);
Robert J. Olmsted, Wood Dale, IL (US);
The Chamberlain Group, Inc., Elmhurst, IL (US);
Abstract
An apparatus having a base portion configured to be secured to a mounting surface and a sensor connected to the base portion that is configured to interface with an elongate member and measure one or more characteristics of the elongate member as the elongate member moves from being wound up on or paid out from a rotatable drive of a movable barrier operator. The one or more characteristics can include, for example, position, velocity, and direction of movement of the elongate member. By measuring the one or more characteristics of the elongate member, corresponding properties of a movable barrier connected to the elongate member can be accurately determined. The apparatus may be also used to supplement an estimate of the properties of the movable barrier obtained from measurement of the rotatable drive and provide a more accurate estimate of the movable barrier properties.