Patent ID: 8499402

Claim:
A toothbrush having an articulating head comprising: an upper handle portion having a first handle end and a brush end, the brush end being furthest from the first handle end, and the first handle end has a top surface and a bottom surface and bristles extend from the top surface of the brush end; and a lower handle portion having a second handle end and an arcuate member furthest from the second handle end, and the second handle end has a top surface and a bottom surface; wherein the bottom surface of the upper handle portion has an elongated first groove therein that is collinear with the upper handle portion and the first groove has a depth that does not extend through the upper handle portion, wherein the side walls of the first groove each have a second groove therein that is collinear with the first groove, wherein the top surface of the lower handle portion has an elongated first protrusion thereon that is collinear with the lower handle portion, and opposing sides of the first protrusion each have a raised second protrusion thereon, and when the upper handle portion and the lower handle portion are assembled together the elongated first protrusion is forced into the elongated first groove and the second protrusions and second grooves cooperate to hold the upper handle portion and the lower handle portion together in a way that the upper handle portion and the lower handle portion are held parallel to each other but can slide parallel to each other to create a force that changes the shape of the brush end of the upper handle portion of the articulating head toothbrush, and wherein the end of the brush end of the upper handle portion is connected to the end of the arcuate member and when the upper handle portion and the lower handle portion are slid parallel to each other in a first direction the brush end of the upper handle portion will curve in a first direction, and when the upper handle portion and the lower handle portion are slid parallel to each other in a second direction opposite to the first direction the brush end of the upper handle portion will curve in a second direction that is opposite the first direction.