Communications: electrical – Continuously variable indicating – With meter reading
Patent
1988-10-27
1990-04-10
Dwyer, James L.
Communications: electrical
Continuously variable indicating
With meter reading
70271, 70 63, E05B 4900
Patent
active
049164430
ABSTRACT:
A key is provided with a memory in which, without user intervention, it collects data relating to lock operations each time the key interacts with a lock. This data is subsequently downloaded from the key to a computer. In some embodiments, the keys collect data relating not just to their own transactions, but also poll lock memories for the locks' prior transactions as well. By this arrangement, a patchwork collection of redundant data can be developed in the computer, improving data integrity and reducing data latency.
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Barrett Philip D.
Daum Gerald R.
Larson Wayne F.
Dwyer James L.
Supra Products, Inc.
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