Drain plug apparatus

Claim 1

A drain plug apparatus in combination with a fluid reservoir, the fluid reservoir including a bottom surface, and an internally threaded pressure nut fixedly mounted to the bottom surface, the internally threaded pressure nut defined by a coaxially aligned internally threaded conduit, and an externally threaded discharge screw threadedly received within the conduit, and the discharge screw including an elongate longitudinally aligned shank, the shank including a shank conduit coextensive with and directed through the shank, and the discharge screw further including a conical member, the head member including a head conduit through-extending the head in fluid communication with the shank conduit, and wherein the shank conduit is orthogonally oriented relative to the head conduit, and wherein the pressure nut includes a boss member extending beyond the pressure nut and integrally formed thereto, the boss member coaxially aligned with the pressure nut and the conduit, and wherein the boss member includes a conical recess coaxially aligned with the conduit formed within a forward end of the boss member of a complementary configuration defined by that of the conical head of the discharge screw, and wherein the head conduit is seated within the conical cavity in a first position and spaced from the conical cavity in a second position to expose the head conduit, and wherein the conical head of the discharge screw includes a diametrically aligned slot oriented to receive a blade member for removal of the discharge screw from the pressure nut.