Submersible pump discharge head

Claim 1

A removable discharge head for coupling a submersible pump casing to a fluid delivery line comprising: a neck portion having a generally cylindrical, threaded inner surface adapted for threadably receiving said fluid delivery line and defining a centered axis; an annular shoulder extending radially outwardly from said neck portion, said shoulder including an apertured lug operably coupled thereto; a generally cylindrical skirt axially depending from said shoulder and including means for detachable coupling of said skirt with said casing, said neck portion, shoulder and skirt each including an outer surface having respective diameters; and an outer shell having an inner surface with a portion complemental to said neck portion, said shell inner surface portion having a diameter smaller than the diameter of said neck outer surface, whereby said neck is tightly received within said shell in a force fit, thereby protecting said neck portion, and supporting said neck portion against radially outwardly directed forces generated when said delivery line is received by said threaded inner surface, said shell inner surface including additional portions complemental to said shoulder and skirt outer surfaces, said additional portions having a diameter smaller than the respective diameters of said shoulder and skirt outer surfaces, whereby said shoulder and skirt are received within said shell in a force fit, said shell further including structure defining a slot for receiving said lug therethrough, and said lug including a body having a top portion and bottom portion being of a lesser width than the width of said slot, and a pair of opposed detents spaced apart from said shoulder and extending outwardly from said body, the cross section of said lug at said detents being of a greater width than said slot, said shell being interposed between and retained by said shoulder and said detents.