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 6588455 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 08, 2003

Filed:

Jul. 08, 2002
Applicant:
Inventor:

Andrew Welfare, Padiham, GB;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L 5/510 ;
U.S. Cl.
CPC ...
F16L 5/510 ;
Abstract

Apparatus for blocking the bore of a pipe ( ) comprises a plurality of elongate shutter member ( ) pivotably mounted to an elongate support member ( ) for insertion through a pre-drilled aperture ( ) in the pipe wall. Actuating means ( ) are provided for pivoting the shutter members ( ) from an insertion configuration in which they substantially aligned with said support member ( ) and deployed configuration in which they are fanned out across the bore of the pipe ( ). Each shutter member ( ) is pivoted about a point ( ) located towards one end thereof and towards the insertion end of the support member ( ) so as in use to lie between the axis of the bore of the pipe and the wall of the pipe ( ) opposite the location of said aperture.


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Welfare, Andrew. (2003). Method and apparatus for blocking pipes (U.S. Patent No. 6588455). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6588455

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