Patent ID: 8387847

Claim:
A power tool that performs a predetermined operation by driving a tool bit comprising: a tool body having a tool bit end located in a forward position; a handgrip formed on the tool body, the handgrip having a shell made of a relatively hard material, and having an outer cushion made of a relatively softer material that is provided around at least a portion of the shell on the handgrip for engaging a user's fingers, a grip face provided on a circumferential surface of the handgrip and a plurality of ribs that are formed as a part of the cushion and are formed in parallel on the grip face to protrude from the grip face, wherein each rib is elongate and has a longitudinal dimension extending in the longitudinal direction of the handgrip that is greater than a circumferential dimension extending in the circumferential direction of the handgrip, and each rib has a ridged shape that is configured to provide enhanced gripping with balls of fingertips of at least third to fifth fingers of a user's hand holding the handgrip in one of the circumferential directions of the handgrip as compared to holding the handgrip in another direction of the circumferential directions, and each rib has a triangular shaped cross section and the triangular shape has sides formed by inclined surfaces extending from the grip face to an apex, one of the inclined surfaces being shorter than the other inclined surface, wherein the plurality of ribs are arranged on at least one of a left circumferential side and a right circumferential side of the handgrip and wherein the cushion is arranged on the handgrip to extend continuously at least from a rib that is located at a forward position on the handgrip along the circumferential side to a rib that is located at a comparatively more rearward position of the handgrip along the circumferential side, such that the cushion spans the forwardly positioned rib and the rearwardly positioned rib and the space therebetween.