Abstract: According to the method of the present invention, the ball plug is press fit into the counterbored passage of a fuel injector nozzle assembly prior to hardening of the fuel injector nozzle assembly. A core hardening and gas nitriding process is then applied to the assembly, causing the ball plug to expand and the passage diameter to shrink. This results in a greatly increased seal between the ball plug and the passage, and substantial elimination of the gaps experienced therebetween in prior art fuel injector nozzle assemblies.

Abstract: According to the method of the present invention, the ball plug is press fit into the counterbored passage of a fuel injector nozzle assembly prior to hardening of the fuel injector nozzle assembly. A core hardening and gas nitriding process is then applied to the assembly, causing the ball plug to expand and the passage diameter to shrink.

Abstract: A method for feeding a pet a balanced meal or supplement. For a dog, the meal includes a main course having a high protein content, a side dish having a high carbohydrate content and a dog treat preferably in the traditional shape of a bone or biscuit which the dog has been preconditioned to perceive as a reward. The meal is provided in a tray having a removable cover, the tray being divided into separate compartments in which the main course, side dish and treat are placed. According to this inventive method, the dog receives a well-balanced and enjoyable meal or supplement.