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:
Aug. 02, 2005
Filed:
Sep. 12, 2003
Rory Smith, El Cajon, CA (US);
Robert H. Sweet, Lakeside, CA (US);
James Nickerson, Spring Valley, CA (US);
Michael A. Palazzola, San Diego, CA (US);
Randall Parrish, Pine Valley, CA (US);
Rory Smith, El Cajon, CA (US);
Robert H. Sweet, Lakeside, CA (US);
James Nickerson, Spring Valley, CA (US);
Michael A. Palazzola, San Diego, CA (US);
Randall Parrish, Pine Valley, CA (US);
Thyssen Elevator Capital Corp., Whittier, CA (US);
Abstract
An apparatus and method for inspecting and calculating the residual strength of an aramid fiber rope driving an elevator to determine when such rope is in need of replacement. The apparatus comprises a transmitter for introducing an acoustic wave that will travel along the aramid fiber rope and a plurality of receivers for receiving the acoustic wave after its has traversed a designated section of the rope. The transmitter and receiver provide signals indicating the times the wave was sent by the transmitter and thereafter received by the receiver. From these signals, a program calculates the wave velocity, and the modulus and residual strength of the aramid rope.