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:
Jan. 09, 2024
Filed:
Sep. 11, 2020
Petroliam Nasional Berhad (Petronas), Kuala Lumpur, MY;
PETROLIAM NASIONAL BERHAD (PETRONAS), Kuala Lumpur, MY;
Abstract
An optical cable () includes: a stress wave detection optical cable () having an optical fiber () and a plurality of first steel wires () which are helically wound so as to surround the optical fiber () and which are surrounded by a flexible material (); and second steel wires () different from the first steel wires (). The stress wave detection optical cable () and the plurality of second steel wires () are helically wound to form one annular body as a whole, and a winding angle (α) of the stress wave detection optical cable () with respect to the axis is determined by a property value prescribed by Lamé constants of the flexible material ().