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:
Apr. 11, 2017
Filed:
Sep. 21, 2015
Applicants:
David D. Russell, Blodgett, MO (US);
Robert Russell, Sikeston, MO (US);
Inventors:
David D. Russell, Blodgett, MO (US);
Robert Russell, Sikeston, MO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02D 29/12 (2006.01); B65D 90/10 (2006.01); B65D 90/48 (2006.01); B65D 51/16 (2006.01); B65D 53/00 (2006.01);
U.S. Cl.
CPC ...
B65D 90/105 (2013.01); B65D 51/1644 (2013.01); B65D 53/00 (2013.01); B65D 90/48 (2013.01);
Abstract
An apparatus and method for providing a water impenetrable barrier between an underground duct and an access opening. The apparatus is particularly well suited to cover a secondary opening in a containment sump of an underground storage tank or the manway of a sanitary sewer, catch basin or other manhole system. The apparatus includes a lid, inflatable seal and pressurized tank contained within the lid to inflate the seal. When sealed to the access opening, the lid restricts the inflow of water or other debris into the interior of the underground duct and restricts removal of the lid.