Servicing a software-controlled elevator
US4561093A · kind A · utility
13Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1983 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Feb 22, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/24056
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A computer-controlled system, such as an elevator, is tested by augmenting computer operation with a diagnostic device containing a computer and coded diagnostic programs that a service technician identifies through a keyboard using diagnostic test codes that appear on an overlay which contains special codes and identifiers associated with numerical displays and lights on the diagnostic device for correlating test results to the test performed according to the program.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.