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. 21, 2012
Filed:
Dec. 10, 2008
Andrew J. Happel, Fort Wayne, IN (US);
Chad E. Csadenyi, Fort Wayne, IN (US);
Andrew J. Happel, Fort Wayne, IN (US);
Chad E. Csadenyi, Fort Wayne, IN (US);
Press-Seal Gasket Corporation, Fort Wayne, IN (US);
Abstract
A grout and lifting tube for casting within a concrete segment. The tube provides enhanced sealing between the tube and the concrete to prevent moisture leakage into a structure formed by a plurality of the concrete segments. The tube includes a generally cylindrical body having an exterior with an anchoring rib structure, a threaded interior, a proximal end, a distal end. An annular gasket is disposed at the proximal end of the tube body, and may be secured to the proximal end of the tube body by a mechanical interlock and/or by unitary co-molding. After the concrete section is placed and grout is pumped through the tube, a plug is threadable into the proximal end of the tube to both compress the gasket between the plug and the tube at a first seal, and to compress the gasket between the plug and the concrete surrounding the proximal end of the tube at a second seal to provide robust, watertight sealing.