BigPatents India

An advanced toothbrush comprising: pipe shaped hollow handle having front and rear ends; said rear end being open and threaded from outside and front end having reduced conical diameter and threaded from inside; said rear end having a removable cover M; said cover M being threaded from inside and removably attached to rear-end C; said pipe shaped hollow handle having a threaded rod I passing through a piston K and said cover M; said piston is in transition fit with pipe shaped hollow handle so that it can reciprocate; one end of said threaded rod being supported in partition (E) having plurality of holes (F); and other end of said rod is fixed to a rotatable knob at the other end such that the piston is reciprocable in the hollow handle on rotation of said knob (H); said front end is detachably attached to a brush R having a hollow tubing S extending through the bristles of said brush.