Patent ID: 11864965
Assignee: WATER PIK, INC.
Field: Medical technology (Instruments)
Classification: CPC A  H | IPC A  H

Claim 17:
18. An activation method for an electromagnetically driven toothbrush comprising a hollow output shaft to deliver fluid to a brush head, and a spring accommodating a fluid flow path through an interior of the spring to the output shaft, the activation method comprising:
activating a first stationary electromagnet, positioned adjacent a first side of the output shaft and having a first winding direction, and a second stationary electromagnet, positioned adjacent a second side of the output shaft and having a second winding direction opposite the first winding direction, with a first signal to rotate the output shaft in a first direction, wherein both the first stationary electromagnet and the second stationary electromagnet generate rotational movement of the output shaft in the first direction in response to the first signal; and
activating the first stationary electromagnet and the second stationary electromagnet with a second signal to rotate the output shaft in a second direction opposite the first direction, wherein both the first stationary electromagnet and the second stationary electromagnet generate rotational movement of the output shaft in the second direction in response to the second signal.