Abstract: The present invention is directed towards an electric toothbrush having a replaceable tuft assembly. The electric toothbrush comprises a main body, an electric motor mounted in the main body, a support member coupled to the main body, a tuft assembly which is releasably attachable to the support member and a transmission that is operatively connected to the electric motor to provide rotational motion to the tuft assembly. The support member has a first connection member and the tuft assembly has a second connection member. The first and second connection members are adapted to allow rotational motion of the tuft assembly with respect to the main body. In another aspect, the toothbrush may further comprise an adaptor that is releasably attachable to the tuft assembly and converts the rotational motion from the transmission to reciprocal rotational motion for urging the tuft assembly to reciprocally rotate.

Abstract: In one aspect, the present invention is directed to an electric toothbrush. The toothbrush includes a housing, an electric motor, a first transmission and a second transmission. The electric motor is connected to the housing has a motor output member for rotation about a motor output axis. The first transmission is connected to the housing, and converts rotational movement from the motor output member into rotational reciprocating movement at a first average angular speed. The second transmission is linked to the first transmission, and converts rotational reciprocating movement from the first transmission into rotational reciprocating movement at a second average angular speed about a second transmission output axis that is parallel to the motor output axis. The second transmission drives an output member to reciprocate at the second average angular speed about the second transmission output axis. A brush head is removably connectable to the output member.

Abstract: In one aspect, the present invention is directed to an electric toothbrush. The toothbrush includes a housing, an electric motor, a first transmission and a second transmission. The electric motor is connected to the housing has a motor output member for rotation about a motor output axis. The first transmission is connected to the housing, and converts rotational movement from the motor output member into rotational reciprocating movement at a first average angular speed. The second transmission is linked to the first transmission, and converts rotational reciprocating movement from the first transmission into rotational reciprocating movement at a second average angular speed about a second transmission output axis that is parallel to the motor output axis. The second transmission drives an output member to reciprocate at the second average angular speed about the second transmission output axis. A brush head is removably connectable to the output member.

Abstract: In one aspect, the present invention is directed to an electric toothbrush. The toothbrush includes a housing, an electric motor, a first transmission and a second transmission. The electric motor is connected to the housing has a motor output member for rotation about a motor output axis. The first transmission is connected to the housing, and converts rotational movement from the motor output member into rotational reciprocating movement at a first average angular speed. The second transmission is linked to the first transmission, and converts rotational reciprocating movement from the first transmission into rotational reciprocating movement at a second average angular speed about a second transmission output axis that is parallel to the motor output axis. The second transmission drives an output member to reciprocate at the second average angular speed about the second transmission output axis. A brush head is removably connectable to the output member.

Abstract: The present invention is directed towards an electric toothbrush having a replaceable tuft assembly. The electric toothbrush comprises a main body, an electric motor mounted in the main body, a support member coupled to the main body, a tuft assembly which is releasably attachable to the support member and a transmission that is operatively connected to the electric motor to provide rotational motion to the tuft assembly. The support member has a first connection member and the tuft assembly has a second connection member. One of the connection members has an elongate body with a groove on its outer surface and the other connection member has at least one protrusion that is adapted to releasably engage the groove. In another aspect, the toothbrush may further comprise an adaptor that is releasably attachable to the tuft assembly.

Abstract: In one aspect, the present invention is directed to an electric toothbrush. The toothbrush includes a housing, an electric motor, a first transmission and a second transmission. The electric motor is connected to the housing has a motor output member for rotation about a motor output axis. The first transmission is connected to the housing, and converts rotational movement from the motor output member into rotational reciprocating movement at a first average angular speed. The second transmission is linked to the first transmission, and converts rotational reciprocating movement from the first transmission into rotational reciprocating movement at a second average angular speed about a second transmission output axis that is parallel to the motor output axis. The second transmission drives an output member to reciprocate at the second average angular speed about the second transmission output axis. A brush head is removably connectable to the output member.