CAP FOR A WELL CASING, AND METHOD TO RETROFIT A WELL CASING WITH A CAP

摘要

This invention is a cap for protecting wells from ground surface liquidsgetting into a well through thetop. The cap encompasses the lid and the top portion of the well casing. Thecap has a top, a sidewalland an access port. The top is coupled to a sidewall to define a space toaccept a lid and well casing.In preferred embodiments of the invention, the access port has either a tubaand boss or a neck andadaptor. The boss surrounds an opening in the top and receives a proximal endof the tube whereas theneck surrounds the opening in the top and the adaptor is received within theneck. The cover isdisposed on the tube or neck at an open end distal to the top to cover theopening. In bothembodiments, there is at least one hole in the access port. The cap preventssurface liquid fromentering into the well though the top.