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:
Feb. 06, 2001
Filed:
Jun. 15, 1999
Marc P. Bevacco, Corcoran, MN (US);
Cherne Industries Incorporated, Minneapolis, MN (US);
Abstract
A frangible sealing plug for pipelines comprising a unitary disc shaped fluid impermeable body having a plurality of score lines on one side, and a peripheral score line on the opposite side adjacent a peripheral sealing structure. The peripheral sealing structure abuts the end of a pipeline section. The impermeable sealing plug is preferably molded of a plastic composition. The plurality of score lines includes at least one radially disposed score line and at least one concentric score line. The frangible sealing plug is positioned in the end of a pipeline section to hold a testing fluid backpressure. After testing, the disc shaped body is separated into a plurality of pieces along the score lines by a removal device.