Metering apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 3, 1991
Grant Date -
N/A
app pub date -
Dec 14, 1989
filing date -
Dec 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Metering apparatus with a bank of number wheel indicators has wiper and position contacts to provide an electrical indication of the meter reading. The contacts are scanned in a measurement mode and, in an alternating test mode, test signals are imposed upon the position contacts and the output again scanned. In this way, a contact validation output is generated from which faults such as contact short circuits can be detected by the remote meter reading apparatus.
First Claim
Family
International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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