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:
Apr. 23, 2013
Filed:
Mar. 08, 2010
Bao-wen Yang, Closter, NJ (US);
Eric Yang, Closter, NJ (US);
Marion Recane, Cypress, TX (US);
Stephanie H. Yang, Closter, NJ (US);
Bao-Wen Yang, Closter, NJ (US);
Eric Yang, Closter, NJ (US);
Marion Recane, Cypress, TX (US);
Stephanie H. Yang, Closter, NJ (US);
Acoustic Systems, Inc., Houston, TX (US);
Acoustic Systems, Inc., Nanuet, NY (US);
Abstract
A method for tracking a scraper within a pipeline has the steps of moving the scraper along a path in the pipeline such that the scraper produces an acoustic signal, sensing the acoustic signal as produced by the scraper by at least a pair of acoustic sensors positioned in spaced relation along the pipeline, time-stamping the sensed acoustic signal, and calculating a location of the scraper based on the time-stamped acoustic signal. The acoustic signal can be a transient pressure wave produced by the movement of the scraper or a pressure signal produced by a mechanism positioned on the scraper.