Cathode head with focal spot control

Details Cathode head with focal spot control Cathode head with focal spot control

2007-08-14

2007-08-14

Glick, Edward J. (Department: 2882)

X-ray or gamma ray systems or devices

Source

Electron tube

C378S138000, C378S119000

Reexamination Certificate

active

10776540

ABSTRACT:
A cathode head is provide that is suitable for use in an x-ray device that includes an anode having a target surface configured and arranged to receive electrons emitted by the cathode head. The cathode head may be constructed of magnetic or non-magnetic material and includes an emitter block carrying a filament that defines a longitudinal axis about which is disposed one or more magnetic coils. The filament is configured and arranged to emit an electron beam that defines a focal spot on the target surface of the anode. The magnetic coil, or coils, disposed about the longitudinal axis defined by the filament generate a magnetic field that enables control of the location of the focal spot on the target surface of the anode.

REFERENCES:
patent: 3250916 (1966-05-01), Rogers
patent: 3783333 (1974-01-01), Atlee
patent: 3875028 (1975-04-01), Atlee et al.
patent: 3916202 (1975-10-01), Heiting et al.
patent: 3962583 (1976-06-01), Holland et al.
patent: 4064352 (1977-12-01), Mann
patent: RE30082 (1979-08-01), Atlee et al.
patent: 4373144 (1983-02-01), Franke
patent: 4631744 (1986-12-01), Haberrecker
patent: 4689809 (1987-08-01), Sohval
patent: 4764947 (1988-08-01), Lesensky
patent: 4819260 (1989-04-01), Haberrecker
patent: 5125019 (1992-06-01), Evain et al.
patent: 5222114 (1993-06-01), Kamata et al.
patent: 5224143 (1993-06-01), Dumitrescu et al.
patent: 5313510 (1994-05-01), Ebersberger et al.
patent: 5548630 (1996-08-01), Hell et al.
patent: 5550889 (1996-08-01), Gard et al.
patent: 5689542 (1997-11-01), Lavering et al.
patent: 5812632 (1998-09-01), Schardt et al.
patent: 5898755 (1999-04-01), Meusel et al.
patent: 6055294 (2000-04-01), Foerst et al.
patent: 6091799 (2000-07-01), Schmidt
patent: 6111934 (2000-08-01), Foerst et al.
patent: 6115454 (2000-09-01), Andrews et al.
patent: 6128367 (2000-10-01), Foerst et al.
patent: 6181771 (2001-01-01), Hell et al.
patent: 6252935 (2001-06-01), Styrnol et al.
patent: 6292538 (2001-09-01), Hell et al.
patent: 6339635 (2002-01-01), Schardt et al.
patent: 6438207 (2002-08-01), Chidester et al.
patent: 6529579 (2003-03-01), Richardson
patent: 6968039 (2005-11-01), Lemaitre et al.
patent: 2006/0050850 (2006-03-01), Andrews et al.

Affiliated with

Also associated with

Rating

Cathode head with focal spot control does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cathode head with focal spot control, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathode head with focal spot control will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3828134