Communications: electrical – Visual indication
Reexamination Certificate
2005-12-06
2005-12-06
Pham, Toan N. (Department: 2632)
Communications: electrical
Visual indication
C340S815470, C340S815530, C340S815830, C340S908000
Reexamination Certificate
active
06972689
ABSTRACT:
A portable sign system being self-contained and having a digital display panel which can be hydraulically raised to a suitable height and subsequently be rotated by a worm gear which is manually driven or electrically driven by a motor. A broad based upper assembly having an UHMW plastic stabilizing plate and rotation plates and attached worm gear drive serves as a rotatable and stabile mount for a digital or other display panel and an attached solar array. The digital display panel is automatically locked in azimuthal position by the worm gear drive without a conscious operator effort. Azimuth orientation of the digital display panel can be effected by a hand crank, manually by an electrical switch, automatically by an onboard computer control or by remote control.
REFERENCES:
patent: 3883846 (1975-05-01), Bruner
patent: 5257020 (1993-10-01), Morse
patent: 5542203 (1996-08-01), Luoma et al.
patent: 6496123 (2002-12-01), Brinkman
patent: 6552257 (2003-04-01), Hart et al.
Jacob Luc
Legault Jacques
Legualt Jean-Louis
Morgan James B.
Peetroons Alex
Daktronics, Inc.
Jaeger, Esq. Hugh D.
Pham Toan N.
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