Apparatus for monitoring and controlling access to a restricted area
US6283514A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 1999 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | May 24, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1018
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a monitoring means for an area, which can be closed off by at least one door, of a mechanical installation, comprising a safety switch which is adjacent to the respective door and can be actuated by means of an elongate, key-like actuator. It is possible for the actuator to be brought into and out of engagement with the safety switch via two actuating handles which are respectively located on the outside and inside of the door and are coupled to one another by a pin. A control means is coupled to the mechanical installation and to the at least one safety switch for releasing and blocking the at least one safety switch. In this arrangement, the actuator, which can be displaced longitudinally in a guide of a covering by actuation of one of the actuating handles, has a rack section which is in engagement with a toothed-ring segment which is coupled to the pin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.