Which head type is torispherical?

Which head type is torispherical?

• A. Torispherical
• B. Ellipsoidal
• C. Hemispherical
• D. Conical

Answer: (A)

A torispherical head is defined by its shallow crown formed with a torus-shaped knuckle, paired with a small spherical cap. The term “torispherical” literally describes this combination of a torus segment and a spherical portion, giving a distinctive, smooth transition from the sides to the crown. This makes it different from other shapes: an ellipsoidal head has a more elongated, egg-like curvature; a hemispherical head is a perfect half-sphere; and a conical head forms a straight-sided cone. The torispherical option uniquely matches the torus-based crown profile, so it is the correct choice.