Electric lamp and discharge devices: systems – Plural load device systems – Electric switch in the supply circuit
Reexamination Certificate
2004-04-15
2010-02-09
Philogene, Haissa (Department: 2821)
Electric lamp and discharge devices: systems
Plural load device systems
Electric switch in the supply circuit
C315S312000, C315S294000, C315S184000, C315S18500S, C362S559000, C362S555000, C362S648000, C362S227000, C362S285000
Reexamination Certificate
active
07659675
ABSTRACT:
The light sources for illuminating the stope support at a longwall face are operated at low voltage, connected to the control network device, for low voltage supply of the system controllers. LEDs are particularly suitable as light sources. Measures for avoiding an impairment of the function of the system controllers are disclosed.
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patent: 6817123 (2004-11-01), Okazaki et al.
patent: 2007/0217209 (2007-09-01), Wong
patent: 31 47 509 (1983-03-01), None
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patent: 1 156 272 (2001-11-01), None
International Search Report for International Appl. No. PCT/DE2004/000779, completed Sep. 10, 2004.
International Preliminary Report on Patentability for International Appl. No. PCT/DE2004/000779, issued Apr. 24, 2006.
Written Opinion for International Appl. No. PCT/DE2004/000779, mailed Sep. 17, 2004.
Alston & Bird LLP
Philogene Haissa
Tiefenbach Control Systems GmbH
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