Targets for x ray tubes

Claim 2

A target for X-ray tube anodes comprising a target member of material capable of X-ray emission when a surface thereof is impinged by electrons, and at least one backing member of high thermal capacity material engaging one side of the target member, said target member being an annulus extending around a perpendicular axis, and said surface of the target member is provided with means for increasing the area thereof, said means comprising at least one layer of wires arranged in side-by-side relation, each individual wire extending substantially radially with respect to said axis.

Claim 3

A target as set forth in claim 1 wherein said wires comprise parts of turns of a wire winding wound around the annulus.

Claim 4

A target as set forth in claim 2 wherein said target member and an adjacent abutting surface of the backing member are provided with interfitting means for tightening said wire winding.

Claim 5

A target as set forth in claim 3 wherein said interfitting means comprises an annular ridge in the adjacent abutting surface of the backing member and a comating annular groove in the target member, and further comprises means for mechanically clamping said members together to force the ridge into the groove and thereby tightening the wire therebetween.

Claim 6

An X-ray tube comprising a hermetically sealed envelope, a cathode electrode and an anode electrode located in spaced relation within the envelope, and means for connecting said electrodes to external sources of electrical energy, said anode comprising an axial support, and an X-ray generating target assembly mounted on the support, for rotation about the axis of the support said target assembly comprising a first member composed primarily of high thermal capacity material sandwiched between second and third members of high thermal capacity material, a focal track area of said first member being exposed, and means for mechanically retaining said members in intimate physical heat conductive relation, said focal track area comprising parallel corrugations, said corrugations comprising surfaces of wires disposed on said area in substantially side-by-side relation, each individual wire extending substantially radially of said axis.

Claim 7

An X-ray tube comprising a hermetically sealed envelope, a cathode electrode and an anode electrode located in spaced relation within the envelope, and means for connecting said electrodes to external sources of electrical energy, said anode comprising an axial support, and an X-ray generating target assembly mounted on the support, for rotation about the axis of the support said target assembly comprising a first member composed primarily of high thermal capacity material sandwiched between second and third members of high thermal capacity material, a focal track area of said first member being exposed, and means for mechanically retaining said members in intimate physical heat conductive relation, said focal track area comprising parallel corrugations, said corrugations comprising surfaces of wires disposed on said area in substantially side-by-side relation, each individual wire extending substantially radially of said axis.

Claim 8

An X-ray tube as set forth in claim 5 wherein said first member is covered by a wire winding and said corrugations comprise a surface of said winding.

Claim 9

An X-ray tube as set forth in claim 6 wherein said first member is an annulus extending about a geometric axis, and the turns of said winding extend substantially radially with respect to said center.

Claim 10

An X-ray tube as set forth in claim 7 wherein abutting surfaces of said first member and one of said other members are provided with interfitting means which engages and stretches said winding therebetween.