Elevator servicing methods and apparatus
US4418795A · kind A · utility
30Cited by
3References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Jul 20, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/0006
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Elevator servicing methods and apparatus which detect and store information relative to user-defined intermittent conditions, or other abnormal operating conditions. The stored information is reproduced for evaluation and analysis in a manner selected by the user, such as on a video monitor and/or a printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.