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:
May. 26, 2020
Filed:
Apr. 16, 2019
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Andrew L. Tsang, Lowell, MA (US);
Burt Sacherski, Nashua, NH (US);
Steven Robert Tambeau, Marlborough, MA (US);
Arvid Ananthanarayanan, Medford, MA (US);
James Edward Dogul, Hudson, NH (US);
Todd Bubar, Hollis, NH (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
A cable pull switch includes a polychotomous sensor configured to provide a reading of at least one of a plurality of values, the reading corresponding to a tension on a pull cable or a linear displacement of an end of a pull cable. A processor coupled to the polychotomous cable pull sensor configured to determine a rate of change of the value of the reading from the sensor and determine an occurrence of a cable pull event, the determination based on the determined rate of change of the value, and determine whether the rate of change of the value of an electrical resistance through the polychotomous cable pull sensor is below a threshold rate of change value, and adjust an upper pull threshold value to a new upper pull threshold value that is based on a present reading of the value of the electrical resistance through the strain gauge.