Boots – shoes – and leggings
Patent
1985-07-22
1988-06-21
Lall, Parshotam S.
Boots, shoes, and leggings
371 25, G01R 1900
Patent
active
047528869
ABSTRACT:
A method is disclosed for determining the operability of a switching device controlling an electrical load and the status of the load as open, shorted, or normally connected, without disruption of the operative state of the load. The method includes the steps of: (1) commanding the switching device to switch the load to the opposite state for a momentary period less than required for an actual change of state; (2) measuring electrical responses as an indication of the operability of the switching device and the status of the load; and (3) repeating the momentary switch of the load for increasingly longer periods of time until the status of the load is determined or until the momentary time period reaches limiting time duration.
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patent: 4634842 (1987-01-01), Payne
Elmore et al., "Automatic Fault Isolation for Digital Assemblies", IBM Technical Disclosure Bulletin, May 1972, vol. 14, No. 12, pp. 3767-3770.
Austin Ormand R.
General Electric Company
Lall Parshotam S.
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