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. 17, 1976
Filed:
May. 27, 1975
Applicant:
Inventor:
Ruby C Beaver, Houston, TX (US);
Assignee:
Inspection Technology Development, Inc., Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01M / ;
U.S. Cl.
CPC ...
73 4 / ;
Abstract
A pipeline pig inspection device having a plurality of pressure chambers for detecting pipeline leaks and eliminating erroneous indications of leaks caused by obstructions within the pipeline, significant changes in pipeline diameter, and minor fluid flows through the pig which are not caused by leaks.