Motor armature having an integral driving surface

Claim 2

In a motor having stationary stator means, an armature rotatably mounted with respect thereto, and means for supplying electrical energy to the motor to produce rotating torque for the armature, an improved armature comprising; an armature formed of an array of metallic winding conductors including an annular pattern of metallic interconnect tabs whereat the armature winding changes direction, a cylindrical driving element constituting the rotational output means of the motor, said driving element having a driving interface on its circumference adapted to engage a load to be driven by the motor, and means including said annular pattern of metallic interconnect tabs and excluding said driving interface mounting said driving element on said armature.

Claim 3

A motor as defined in claim 1 wherein said armature is a tubular armature including inner, central and outer concentric layers, the central layer being a tube of electrical insulating material which constitutes the mechanical support for the inner and outer layers, said inner and outer layers providing inner and outer armature winding patterns of electrical conductive metal, in each layer of which the individual conductors axially extend beyond the ends of said central layer and electrically connect to a conductor in the layer on the other side of said central layer, to form an annular pattern of metallic interconnect tabs at each end of said armature, and wherein a mounting portion of said driving element is supported by the interconnect tabs at one end of said tubular armature, said mounting portion being spaced from said driving interface.

Claim 4

A tubular armature for use as the rotor of an electric machine, comprising; a tubular array of metallic winding conductors, including end tabs whereat the armature winding axially changes direction, and a tubular driving element having a driving interface and a tubular mounting portion spaced from said driving interface and mounted on said end tabs at one end of said tubular array of winding conductors.

Claim 5

A tubular armature for use as the rotor of an electric machine, comprising; a tubular array of metallic winding conductors, including end tabs whereat the armature winding axially changes direction, and a tubular driving element having a driving interface and a tubular mounting portion spaced from said driving interface and mounted on said end tabs at one end of said tubular array of winding conductors.

Claim 6

A tubular armature as defined in claim 3 wherein said metallic winding conductors are carried by an insulating tube.

Claim 7

A tubular armature as defined in claim 4 wherein said armature winding is formed of individual conductors which lie on both the inside and outside surfaces of said insulating tube and extend beyond each end of the insulating tube to form two annular arrays of end tabs, at each end tab of which an inner conductor connects to an outer conductor.

Claim 8

A tubular armature as defined in claim 5 wherein the mounting portion of said driving element is an insulating tube, and wherein the two conductors forming each of said end tabs at one end of said armature extend beyond the area of electrical interconnection to physically cooperate with said mounting portion and thereby mount said driving element in concentric axial alignment with said tubular armature.

Claim 9

A tubular armature as defined in claim 6 wherein the mounting portion of said driving element is substantially equal to diameter to said insulating tube, and wherein said two conductors forming each of said end tabs extend axially away from said armature to first electrically interconnect and then physically separate and continue to an axial direction, one of said conductors being attached to the outer surface of the mounting portion of said driving element and the other conductor being attached to its inner surface.