Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Transformer in the supply circuit
Reexamination Certificate
2008-01-29
2010-06-29
Owens, Douglas W (Department: 2821)
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Transformer in the supply circuit
C315S254000, C315S282000, C315S288000
Reexamination Certificate
active
07746003
ABSTRACT:
A transformer wiring method and apparatus for fluorescent lighting are described. The fluorescent lighting apparatus includes a transformer and a ballast. An installer is easily able to balance the system load because each fluorescent lighting apparatus includes its own transformer and may be connected directly to a facility's three phase power distribution while still operating at rated voltages. Moreover, the ballast is protected from surges and stray voltages thereby reducing the frequency of ballast failures.
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Product Description Page for 480V:277V ATX, Step Down Autotransformer for Lighting Applications, Thomas Research Products, Huntley, IL, Nov. 30, 2007, 1 page, www.thomasresearchproducts.com.
Product Description Page For GETR480V/277-375W Step Down Autotransformer, GE Consumer & Industrial: Lighting, Oct. 2008, 2 pages, www.gelighting.com.
U.S. Appl. No. 11/242,620, filed Oct. 3, 2005, Verfuerth, Neal R.
Bartol Anthony J.
Ernst Ronald E.
Verfuerth Neal R.
Wetenkamp Kenneth J.
Foley & Lardner LLP
Le Tung X
Orion Energy Systems, Inc.
Owens Douglas W
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