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.:

US 6691728 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 17, 2004

Filed:

May. 29, 2002
Applicant:
Inventors:

Scott A. Beals, Los Angeles, CA (US);

Ronald D. Hammer, Los Angeles, CA (US);

Robert E. Evans, Pasadena, CA (US);

Kevin Leeds, Los Angeles, CA (US);

Assignee:

Sempra Fiber Links, San Diego, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02G 1/08 ; H02G 9/06 ; F16L 1/028 ; F16L 4/104 ;
U.S. Cl.
CPC ...
H02G 1/08 ; H02G 9/06 ; F16L 1/028 ; F16L 4/104 ;
Abstract

A method of routing a new pipe duct into an existing pressurized gas pipeline includes the step of introducing a translating member into the pressurized gas pipeline via an entry port in a first fitting attached to the pressurized gas pipeline. The translating member, such as a duct rod, is advanced within the pressurized gas pipeline by a driving mechanism, until it reaches second fitting. The translating member is attached to a pipe inner duct. The duct rod and pipe inner duct are then pulled back through the pressurized gas pipeline by the driving mechanism.


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Beals, Scott. (2004). Methods and systems for installing a pipeline within a pipeline (U.S. Patent No. 6691728). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6691728

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