X-ray or gamma ray systems or devices – Source – Electron tube
Reexamination Certificate
2011-08-02
2011-08-02
Thomas, Courtney (Department: 2882)
X-ray or gamma ray systems or devices
Source
Electron tube
C378S125000, C378S121000
Reexamination Certificate
active
07991121
ABSTRACT:
In one example embodiment, an x-ray tube comprises an anode configured to rotate at an operating frequency, and a bearing assembly configured to rotatably support the anode and tuned to a resonant frequency that is different than the operating frequency.
REFERENCES:
patent: 2648025 (1953-08-01), Agule
patent: 3619696 (1971-11-01), De Lucia
patent: 4679220 (1987-07-01), Ono
patent: 0 189 297 (1986-07-01), None
patent: 2006/103006 (2006-10-01), None
patent: 2008/058267 (2008-05-01), None
Extended European Search Report issued by the European Patent Office on Nov. 5, 2010 in connection with corresponding European Patent Application No. 10166468.8.
Maschoff Gilmore & Israelsen
Thomas Courtney
Varian Medical Systems Inc.
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