Rotating anode x-ray tube

An x-ray tube comprising:

• (a) a rotatable anode;
• (b) a cylindrical stem oriented along an axis and having a first end and an axially opposed second end, the first end supporting the rotatable anode for rotation about the axis;
• and
• (c) a rotor having a cylindrical sleeve portion and a head portion, the sleeve portion having a first end, a second end which axially opposes the first end, a hollow interior defined by an inside diametral dimension, and an outside boundary defined by an outside diametral dimension, the head portion being joined to the first end of the cylindrical sleeve, and wherein the rotatable stem is attached to the head portion, the stem being attached to the head portion by a combination of direct pipe threaded engagement between the stem and the head portion and brazing.

An x-ray tube comprising:

• (a) a rotatable anode;
• (b) a cylindrical stem oriented along an axis and having a first end and an axially opposed second end, the first end supporting the rotatable anode for rotation about the axis;
• (c) a rotor having a cylindrical sleeve portion and a head portion, the sleeve portion having a first end, a second end which axially opposes the first end, a hollow interior defined by an inside diametral dimension, and an outside boundary defined by an outside diametral dimension, the head portion being joined to the first end of the cylindrical sleeve, and wherein the rotatable stem is attached to the head portion;
• (d) a shaft mounted within the interior of the rotor, the shaft being supported for rotation by bearings and the shaft terminating in a plate which is connected to the head portion by axially-directed screws;
• and
• (e) a collar which is positioned to prevent debris from entering into the bearings.

An x-ray tube comprising:

• (a) a rotatable anode;
• (b) a cylindrical stem oriented along an axis and having a first end and an axially opposed second end, the first end supporting the rotatable anode for rotation about the axis;
• (c) a rotor having a cylindrical sleeve portion and a head portion, the sleeve portion having a first end, a second end which axially opposes the first end, a hollow interior defined by an inside diametral dimension, and an outside boundary defined by an outside diametral dimension, the head portion being joined to the first end of the cylindrical sleeve, and wherein the rotatable stem is attached to the head portion;
• and
• (d) a shaft mounted within the interior of the rotor, the shaft being supported for rotation and the shaft terminating in a plate which is connected to the head portion by axially-directed screws, the screws being formed of a material which has a gettering effect.