Boots – shoes – and leggings
Patent
1985-10-08
1987-10-06
Krass, Errol A.
Boots, shoes, and leggings
364424, 364551, 187 29R, G06F 1546, G06F 1514, B66B 100
Patent
active
046987800
ABSTRACT:
A method of monitoring an operating elevator system for malfunctions related to sequentially perform functions, including the detection of both sequence and timing errors. The method monitors predetermined signals for the detection of user defined unique events starting and stopping conditions, and it follows each state change of all of the pertinent signals which occurs between these two detected conditions. The state changes and their occurrence times relative to the start of the detected event, are compared with a learned binary image of the correct state changes and occurrence times, which correct image was prepared and stored during a learn mode when the elevator was known to correctly perform the sequence to be monitored.
REFERENCES:
patent: 3973648 (1976-08-01), Hummert et al.
patent: 4228513 (1980-10-01), Doljack
patent: 4458788 (1984-07-01), Le Pore
patent: 4512442 (1985-04-01), Moore et al.
patent: 4568909 (1986-02-01), Whynacht
patent: 4622538 (1986-11-01), Whynacht et al.
Eichler Kenneth M.
Mandel Alan F.
Moore William H.
Trosky William J.
Krass Errol A.
Lackey D. R.
Laibowitz Danielle B.
Westinghouse Electric Corp.
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