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:
Jun. 26, 2001
Filed:
Dec. 20, 1999
Marc P. Bevacco, Corcoran, MN (US);
Cherne Industries Incorporated, Minneapolis, MN (US);
Abstract
A two piece mechanical plug assembly for sealing low pressure pipelines. The mechanical plug assembly comprises a rigid body member and a flexible, cylindrical sealing member. The rigid body member has an upper portion and a lower portion of a frustoconical configuration having a plurality of threads. The sealing member has a conical bore with a plurality of threads to receive the lower threaded portion of the rigid body member. The upper portion of the rigid body member has an upwardly extending member with opposing wing members for turning the rigid body member into the sealing member whereby the rigid body member expands the flexible sealing member for sealing engagement into the interior of a pipeline.