Patent ID: 7789580

Claim:
An ergonomic writing instrument comprising: a writing element having a tip and an opposite end spaced in a longitudinal direction from the tip; a first indentation proximate the tip and having a longitudinal span along the longitudinal direction; a second indentation beside but circumferentially spaced from the first indentation, with said second indentation having an longitudinal span along the longitudinal direction, with the longitudinal spans of the first and second indentations overlapping along the longitudinal direction; and an elongate member circumferentially between the first indentation and the second indentation, with the elongate member having a convex top surface, with the convex top surface having a longitudinal span of a convex shape in the longitudinal direction at least equal to the longitudinal spans of both of the first and second indentations, and wherein the elongate member includes first and second spaced sides extending in the longitudinal direction with the convex top surface extending between the first and second spaced sides, with the elongate member having cross sections parallel to the longitudinal direction of a constant outer size and shape between the first and second spaced sides, wherein the first indentation is adapted to be urged by the muscle opposing the finger nail of the thumb, the second indentation is adapted to be urged by the muscle opposing the finger nail of the middle finger, and the elongate member is adapted to be urged by the muscle opposing the finger nail of the index finger respectively in writing.