Cylinder lock
US6968717B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2001 |
| Grant date | Nov 29, 2005 |
| Priority date | — |
| Expiry date | Mar 7, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7734
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cylinder lock utilizing an unlocking code to set at any desired time after the cylinder lock has been assembled and which, before the setting of the unlocking code, allows the rotor to be rotated for the purpose of inproving the efficiency of the automotive assembly work. The cylinder lock includes a rotor in which tumblers are installed, is rotatably inserted in a cylinder case, the tumblers following a code forming portion of an inserted key plate to form a lock-side unlocking code that matches a key-side unlocking code defined by the code forming portion. The tumblers are put in a state where the lock-side unlocking code is formed, in response to an identification portion formed in the key plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.