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:
Jun. 05, 2007
Filed:
Feb. 24, 2005
H. Eugene Toennisson, Hamilton, OH (US);
Kyle A. Apperson, Maineville, OH (US);
Mark T. Davidson, Mason, OH (US);
Dustin J. Charville, Mainville, OH (US);
John D. Shupe, Lebanon, OH (US);
Masashi Tsuchihata, Osaka, JP;
H. Eugene Toennisson, Hamilton, OH (US);
Kyle A. Apperson, Maineville, OH (US);
Mark T. Davidson, Mason, OH (US);
Dustin J. Charville, Mainville, OH (US);
John D. Shupe, Lebanon, OH (US);
Masashi Tsuchihata, Osaka, JP;
FujiTec America Inc., Lebanon, OH (US);
Abstract
The present invention teaches a mechanical device that monitors the support wheels, or rollers, of a moving escalator stair step. The diameter of each support wheel is indirectly measured by determining the height of each support wheel axial above a given plane. Support wheels that have unacceptable diameter trip an activation mechanism that sends an electrical signal to stop the escalator's driving motor.