System for detecting the incomplete closure of the doors of a chamber having at least two superposed doors
US4771269A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Apr 14, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2700/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a system for detecting the incomplete closure of the doors of a chamber with at least two doors (14, 16), one an inner door and the other an outer door, arranged one behind the other in front of an orifice of the said chamber and mounted pivotally between an open position and a closed position about two parallel pivot axes (18, 24) respectively. The detection system comprises an active element (34) capable of causing an action in a particular direction and a sensor element (36) sensitive to the said action, the said elements being fastened one to the inner door (14) and the other to the outer door (16) at a point located opposite the other element, in such a way that the sensor element is in the line of action of the active element only when the two doors are closed correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.