Communications: electrical – Land vehicle alarms or indicators – External signal light system
Reexamination Certificate
2005-09-13
2005-09-13
Hofsass, Jeffery (Department: 2636)
Communications: electrical
Land vehicle alarms or indicators
External signal light system
C340S463000, C340S464000, C340S467000, C340S469000, C340S479000
Reexamination Certificate
active
06943677
ABSTRACT:
A method and apparatus for brightening and dimming a brake light of automotive vehicle for enhanced display indication of braking includes a pulse width modulation unit to be electrically connected to a brake lamp for sequentially modulating the supply energy to the lamp to generate a brightening and dimming of the lamp. A time extent of the modulation is detected so that the modulation can be stopped after a preselected time period and the light will be continually on as in a conventional braking operation. After the brake is released by the operator, a second preselected time period for locking out the sequential interrupting is timed down, for avoiding repetitive flashing during stop-and-go traffic.
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Boyer Clyde H.
Morris, Jr. Robert C.
Stropkay Edward J.
Fay Sharpe Fagan Minnich & McKee LLP
Hofsass Jeffery
Pham Lam
TransAlert, Inc.
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