Electric shavers

Claim 2

In an electric shaver comprising a housing, a cutting head, electric motor having a stator including a hollow cylinder of magnetizable material and a rotor mounted for rotation within the stator cylinder, and electric circuit means for supplying energizing current to the motor, the improvement comprising: the stator having two flat parallel opposed faces and the housing being moulded in situ around the hollow stator cylinder with an external surface of the housing formed flush with the flat faces of the stator so as to be contiguous with the stator from end to end to secure and locate the stator cylinder in position and to serve as a reference member for mounting of the cutting head, electric motor and electric circuit means.

Claim 3

Shaver according to claim 1, wherein the width of the shaver in at least one direction does not exceed the width of the motor in the said direction by more than 10 percent of said width of the motor.

Claim 4

Shaver according to claim 2, wherein the motor occupies the entire width of the shaver in the said direction.

Claim 5

Shaver according to claim 1, wherein the stator has permanent magnet means integrated with the housing, said permanent magnet means being positioned within the magnetisable shell to define an annular space accommodating a bell-shaped rotor.

Claim 6

Shaver according to claim 1, wherein the housing carries at least one bearing for the shaft of the rotor of the electric motor.

Claim 7

Shaver according to claim 5, wherein the electric circuit means comprises a printed circuit board mounted on the housing, and a brush-holder for the motor brushes is mounted on the printed circuit board to be positioned in accurate relationship to a collector forming part of the rotor.

Claim 8

Shaver according to claim 1, further including, a thin-walled external casing being provided to cover the housing, the entire width of the shaver covered by said casing not substantially exceeding the width of the housing.

Claim 9

In an electric dry shaver a housing, a cutting head, electric motor having a stator including a hollow cylinder of magnetizable material and a rotor mounted for rotation within the stator cylinder, and electric means for supplying energizing current to the motor including a motor brush set cooperating with a collector forming part of the rotor, the improvement comprising: the stator having two flat parallel opposed faces and the housing being moulded in situ around the hollow stator cylinder with an external surface of the housing formed flush with the flat faces of the stator so as to be contiguous with the stator from end to end to secure and locate the stator cylinder in position and to serve as a reference member for mounting of the rotor, the cutter head and the electric circuit means including the motor brush set in an accurate positioned relationship with one another and with the stator.

Claim 10

In an electric dry shaver a housing, a cutting head, electric motor having a stator including a hollow cylinder of magnetizable material and a rotor mounted for rotation within the stator cylinder, and electric means for supplying energizing current to the motor including a motor brush set cooperating with a collector forming part of the rotor, the improvement comprising: the stator having two flat parallel opposed faces and the housing being moulded in situ around the hollow stator cylinder with an external surface of the housing formed flush with the flat faces of the stator so as to be contiguous with the stator from end to end to secure and locate the stator cylinder in position and to serve as a reference member for mounting of the rotor, the cutter head and the electric circuit means including the motor brush set in an accurate positioned relationship with one another and with the stator.

Claim 11

Shaver according to claim 8, wherein the width of the shaver in at least one direction does not exceed the width of the motor in the said direction by more than 10 percent of said width of the motor.

Claim 12

Shaver according to claim 9, including a thin-walled external casing covering the said shaver body.

Claim 13

Shaver according to claim 8, wherein the said housing comprises the visible external structure of the shaver.

Claim 14

Shaver according to claim 8, wherein the stator has permanent magnet means integrated with the housing, said permanent magnet means being positioned within the magnetisable shell to define an annular space accommodating a bell-shaped rotor.

Claim 15

Shaver according to claim 8, wherein the stator has segmental permanent magnets fixedly mounted on the interior surface of the magnetisable shell, said stator surrounding a cylindrical internal rotor.

Claim 16

Shaver according to claim 8, wherein the magnetisable shell occupies the entire width of the said housing at least in one transverse dimension of the shaver.