Patent ID: 6311770
Filing Date: 2001-11-06
Classification: E21B

Abstract:
A pitless adaptor for a water well system operatable by a pump suspended in the well below the adapter assembly to pump underground water upwardly through a plastic supply pipe to a feed pipe through a well casing, and comprising a housing having a generally right-angle flow path therein defined by a housing inlet and a housing outlet for interconnecting the supply pipe with the feed pipe through the well casing, said housing including:(a) an integrally-formed eyelet for receiving and retaining a safety wire to which the pump is attached, said eyelet being positioned on a longitudinally-extending exterior wall of the housing in a recess in said exterior wall of sufficient depth that the eyelet does not project outwardly beyond the plane of the exterior wall in order to prevent damage to the eyelet from impact with the well casing during installation and maintenance of the housing;(b) a plurality of annular serrations formed in the walls of the housing surrounding the housing inlet for receiving and retaining an upper end of the feed pipe; and(c) walls of the housing defining the flow path between the housing inlet and the housing outlet defining a radius intermediate the housing inlet and the housing outlet and thereby defining a curved flow path which is at least the diameter of the housing inlet and the lousing outlet along its entire length to reduce turbulence in the water flowing through the housing from the supply pipe to the feed pipe.