Coupling head adapter

Claim 1

In combination, an elongate vertical power cable for a well pump, a coupling at the lower end of the cable, a well pump with housing having coupling receiving means which is not compatible with the coupling, and an adapter between the coupling and receiving means, said coupling having a central substantially vertical body portion and a flange-like base portion at the lower end of the body portion, a central opening in which the lower end of the cable is engaged and fixed and from which cable conductor leads depend, said base portion having a flat bottom surface, an annular depending orienting boss about the central opening to slidably enter an annular recess in a compatible receiving means, an annular malleable metal sealing ring about the boss and a pair of fastener receiving openings in the base portion, said receiving means including a flat substantially vertically disposed support surface, a cylindrical, upwardly opening, electrical junction chamber central of the support surface and a pair of fastener receiving openings spaced laterally of the chamber, said adapter comprising a plate with flat top surface opposing the bottom surface of thE coupling and engaging the malleable metal seal, a central upwardly opening annular recess receiving the boss, a flat bottom surface opposing the support surface, an annular depending skirt engaged in the chamber, Orings carried in grooves in the skirt and sealing between the skirt and the chamber, a central passage communicating with the central opening and the chamber and a pair of fastener openings registering with the fastener openings in the adapter and of the receiving means and screw fasteners cooperatively engaged in and through said registering openings and holding the coupling, adapter and receiving means in tight engagement with each other.