Patent ID: 7963356

Claim:
Apparatus comprising a locomotive-radiator-cooling-fan tankhead assembly having a substantially-circular base plate and a substantially-circular outer ring, wherein the base plate and the outer ring each consist essentially of an aluminum alloy, wherein a maximum diameter of the base plate divided by a maximum thickness of the base plate is between 5 and 15, and wherein the maximum diameter of the base plate divided by a maximum thickness of the outer ring is between 20 and 30, wherein the base plate has a central longitudinal axis and a circumference, wherein the outer ring is substantially coaxially aligned with the central longitudinal axis and is attached to the base plate proximate the circumference, wherein the base plate has a substantially-planar first surface having a central recess substantially coaxially aligned with the central longitudinal axis and having circumferentially-separated, first and second peripheral recesses each radially spaced apart from the central recess and extending radially inward from proximate the circumference, wherein the outer ring longitudinally extends beyond the first surface, and wherein the tankhead assembly is devoid of any gussets attached to the base plate and is devoid of any gussets attached to the outer ring.