System for monitoring utility usage
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Apr 7, 1981
Issued Date -
N/A
app pub date -
Apr 3, 1979
filing date -
Apr 3, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Electronic circuitry monitors the electrical energy consumption of a system and displays the current cost of the energy usage. The projected monthly billing cost is calculated at the current rate of consumption, and an alarm signal is generated if the projected cost is higher than a budget amount. The current flow is sensed and digital pulses are fed to a microprocessor for counting and conversion to cost parameters. Clock pulses are also directed to the microprocessor for calculating the billing period and for displaying time parameters. A keyboard enables initializing and modifying the cost and time parameters in the microprocessor.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 37 Citation Count
- G06F Class
- 0 % this patent is cited more than
- 44 Age