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. 30, 1998
Filed:
Apr. 29, 1997
Patrick E Healy, Gallitzin, PA (US);
Brian Christopher Schmidt, Johnstown, PA (US);
New Pig Corporation, Tipton, PA (US);
Abstract
An extendible drain closure device has a plurality of telescoped hollow tubular members. The outermost hollow tubular member is a main body which has a base portion sized to seat down into a drain opening and an upper flange having a recessed portion. The main body is sized such that the upper flange is flush with the top of the drain opening. Multiple hollow tubular members are positioned within the main body in a telescopically operative manner with the innermost hollow tubular member having a stop ring which seats into the recessed portion of the flange. The top of the extendible drain closure device is thus flush with the top of the drain opening when the device is in a telescopically retracted position. A handle, which can be hinged so that it lies flat when not in use, is provided on the stop ring which may grasped and pulled upwardly to deploy the extendible drain closure device in a telescopically extended position. Each of the multiple hollow tubular members can be provided with a seal ring disposed in an annular groove provided in the outer surface near the bottom opening of each member. In a telescopically extended position, the sealing ring is compressed against the inner surface of an adjacent surrounding hollow tubular member to form a liquid barrier therebetween. A means for releasably maintaining the extendible drain closure device in a telescopically extended position is also provided.