US Patent 9981395 Knife handle with removable counterweights

A knife includes a blade, and a counterweight unit, and a handle having an accommodating space. The counterweight unit includes a counterweight-receiving member removably disposed in the accommodating space, multiple counterweights, and a biasing member. The counterweight-receiving member has a tubular wall, and an abutment wall cooperating with the tubular wall to define a receiving space and defining an exit opening that spatially communicates with the receiving space. The counterweights are removably disposed in the receiving space. The biasing member biases the counterweights toward the abutment wall so as to permit removal of one of the counterweights via the exit opening when the counterweight unit is separated from the handle.