Digital readout combination lock dial assembly
US4631940A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1985 |
| Grant date | Dec 30, 1986 |
| Priority date | — |
| Expiry date | Mar 29, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S70/59
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A selectively illuminated digit display combination lock dial assembly to be coupled to the spindle of a combination lock for dialing a lock opening combination of numbers, including a rotatable dial member to dial the numbers of the combination, a dial backup case to be mounted on a security container having a coupling member journaled therein connected with the spindle and with the dial member. The backup case having a sight passage and digit numeric generating and display device located outwardly of the dial member periphery to generate and visually display numbers signifying the dial member angular positions. An encoder disc is rotated in correlation with the coupling member having plural light passing slots for activating sensors to produce electrical count signals, and electronic circuitry counts the count signals and senses direction of dial rotation to activate the numeric display device to show numeric dial positions upon reaching a first number of revolutions and to activate the numeric display device to show numeric dial position when predetermined numbers of revolutions are reached in a predetermined sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.