Toothbrush power handle assembly

Claim 1

IN AN ELECTRIC TOOTHBRUSH A POWER UNIT COMPRISING: (A) A U-SHAPED FRAME HAVING A BASE AND TWO LEGS, A CHANNEL BEING FORMED IN EACH OF SAID LEGS, (B) A MOTOR ATTACHED TO SAID FRAME, SAID MOTOR INCLUDING A SHAFT AND A PINION MOUNTED ON SAID SHAFT, (C) A PLUNGER COMPRISING A CYLINDRICAL TOOTHBRUSHENGAGING PORTION, A PAIR OF PARALLEL SPACED ARMS EXTENDING FROM SAID TOOTHBRUSH-ENGAGING PORTION, A PAIR OF PROJECTIONS EXTENDING OUTWARDLY FROM EACH OF SAID ARMS, AN ELONGATED APERTURE BEING FORMED IN EACH OF SAID ARMS, A PAIR OF INWARDLY EXTENDING ABUTMENTS FORMED ON THE SIDES OF ONE OF SAID APERTURES, (D) A SECOND SHAFT EXTENDING BETWEEN SAID LEGS AND SUPPORTED THEREBY, SAID SECOND SHAFT PASSING THROUGH SAID APERTURES, (E) A GEAR AND CAM MOUNTED ON SAID SECOND SHAFT FOR ROTATION TOGETHER, SAID GEAR BEING DRIVEN BY SAID PINION AND SAID CAM ENGAGING SAID ABUTMENTS FOR EFFECTING RECIPROCATING MOTION OF SAID PLUNGER WITH SAID SHAFT RECIPROCATING IN SAID APERTURES, THE RECIPROCATING MOTION OF SAID PLUNGER CAUSING RECIPROCATING MOTION OF A TOOTHBRUSH ATTACHED TTHERETO.