Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Temperature-responsive type
Reexamination Certificate
2007-03-27
2007-03-27
Barrera, Ramon M. (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Temperature-responsive type
C335S296000, C335S301000, C335S306000, C315S005350, C372S002000
Reexamination Certificate
active
10657640
ABSTRACT:
An undulator includes a periodic arrangement of magnets to produce a periodic spatial magnetic field distribution in a magnetic gap defined by the magnets. The undulator further includes a temperature-compensating material selectively arranged to compensate for a temperature-dependent change in the magnetic field of the undulator. The change may be in the strength of the magnetic field, or in the position of the magnetic field centerline. According to one aspect of the invention, the temperature-compensating material is movably arranged, so as to fine tune its compensation effect after it is initially arranged. Alternatively or additionally, the amount of temperature-compensating material may be adjusted to fine tune its compensation effect after it is initially arranged.
REFERENCES:
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patent: 3227913 (1966-01-01), Millward et al.
patent: 4539512 (1985-09-01), Heynisch et al.
patent: 4839059 (1989-06-01), Leupold
patent: 5010640 (1991-04-01), Gottschalk
patent: 5103200 (1992-04-01), Leupold
patent: 6573817 (2003-06-01), Gottschalk
Barrera Ramon M.
Johnson Kindness PLLC
O'Connor Christensen
STI Optronics Inc.
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