Power sensor
US8831787B2 · kind B2 · utility
2Cited by
25References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2008 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Nov 13, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R21/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an apparatus, system, and method for sensing the current supplied to a motorized hoist for raising a maintenance platform and providing an estimate of the operating status of the motor, for example, as stopped, starting, stalled or operating as expected. In various embodiments, measures of voltage and current may be used to determine the operating condition of the hoist and to estimate the magnitude of the applied load. Unintended modes of operation can then be determined so that the conditions can be indicated to the operator and protective measures taken.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.