Electronic interlock for storage assemblies
US5225825A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1990 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Oct 17, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5097
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electronic interlock for locking a file cabinet (10, 100) and for limiting the number of drawers (14, 114) to be accessed at any given time. An input keyboard (20, 120) receives an input code to be compared with a prestored access code. If the codes do not match, an unlock signal is not produced. If the input code matches the access code, a processor (28, 148) renders the storage assembly (10, 110) accessible. The processor (28, 128) will receive a drawer selection number from the input keyboard (20, 120) user and will unlock a lock (16, 116) associated with the selected drawer (14, 114). Sensors (34, 134) sense the position of the drawers (14, 114) and disable the processor (28, 128) when one of the drawers (14, 114) is in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.