ApplicationNo. 739092 filed on 10/28/1996
US Classes:15/22.4, Swinging tool15/22.1, Handle mount15/28, Rotary disk74/23Rotary to reciprocating and alternating rotary
ExaminersPrimary: Graham, Mark S.
Attorney, Agent or Firm
Foreign Patent References
International ClassA46B 013/02
Foreign Application Priority Data1996-07-10 DE
AbstractAn electric toothbrush (1) is described which incorporates a handle (2) and a brush attachment (3). The handle (2) houses an electric motor (8). Protruding from the handle (2) is a shaft (20), which is coupled to the electric motor (8). The brush attachment (3) can be mounted on the handle (2). The brush attachment (3) supports a bristle head (26) which can be coupled to the shaft (20), and from which protrude a multiplicity of bristles (4). In the operating mode, the bristle head (26) describes a rotary motion (49) and a stroke motion (50), with the frequency of the stroke movement (50) being higher, and preferably substantially higher, than the frequency of the rotary movement (49.) The stroke movement (50) provides a poking action of the bristles (4), which serves to loosen plaque from dental surfaces. The rotary movement (49) serves to wipe away plaque loosened from the dental surfaces.