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US 4,291,295 AGranted
Vehicle speed enforcement signal
OwnerRobert D. Arnoldinventor
Life of this patent
Estimating the term…
Abstract
In an on-board sensible signal that is activated by the speedometer of a vehicle when the vehicle speed exceeds a predetermined threshold and that remains activated when the speed is reduced below this threshold, the improvement consists of a combination of timing and logic circuitry that deactivates the signal when and only when the vehicle stops and remains at rest for a predetermined period of time.
Claims6
A vehicle speed monitoring device, comprising:
- means, connected to the speedometer of said vehicle, for indicating that said vehicle has exceeded a predetermined speed;
- timing means, attached to said indicating means, for extending the activation period of said indicating means;
- means, connected to the speedometer of said vehicle, for generating a signal that is active when said vehicle is in motion;
- and
- logic means, connected to said signal generating means, to said indicating means, and to said timing means, for deactivating said indicating means when said vehicle stops and remains at rest for a predetermined period of time.
2 more elements
Dependencies are inferred from the claim text.