Apparatus for limiting control of electrical equipment
US5563586A · kind A · utility
14Cited by
12References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1994 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Jul 29, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/0069
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An apparatus or system for limiting access to control of electrically operated equipment. In order to access control of the equipment, i.e., to activate or deactivate the equipment, an operator must enter an access code for example by working a predetermined number of switches or code. An additional feature of the system includes a dwell time function to allow access to control the equipment for a limited time after deactivation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.