View limiting enclosure assembly for dial combination locks
US5927114A · kind A · utility
Inventor
Key dates
| Filing date | May 19, 1997 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | May 19, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/8378
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A view limiting enclosure and assembly for dial combination locks with a dome cover(9): which completely covers a dial combination lock(1): dial turning knob(3): and dial except for a dial viewing hole(10): to view the dial graduations as they go by a partly transparent L shaped cover(6): which covers the dial inside the dome cover so that only 3 or 4 dial graduations are seen at one time and all but one dial graduation mark looks the same. A rope pulling hole(11): in the side of the dome cover contains a rope(2): that goes around the dial turning knob and is used to turn the dial by pulling on one end or the other end of the rope slowly and counting one dial graduation at a time until the correct combination is reach to open lock. It takes one minute to open sober, very hard if not impossible, to open if you are drunk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.