Inductively coupled lock
US3979647A · kind A · utility
25Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1975 |
| Grant date | Sep 7, 1976 |
| Priority date | — |
| Expiry date | Jun 11, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7062
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An inductively coupled electronic lock system wherein the key has a clock driven variable pulse width generator with alterable pulse sequence input to an inductor. The lock part of the system has an inductive pick-up which discriminates against all but a preselected sequence of pulses, converts the received signals to DC and powers a motor to open the lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.