Cylinder lock configured to be operated by a flat-bladed key
US9416561B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2015 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Jan 26, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7881
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A cylinder lock with a rotating tumbler pin, a sidebar, and a slider has a keyway with a ward projection into the center of the bitting area of a key blade received by the keyway. The tip of each rotating tumbler pin seats on the bitting surfaces remaining to the sides of this center ward of the key, and the tumbler pins that are engaged by the bitting on the side of the key blade do not seat on more than half of the width of the blade. Half the pin width is removed from each tumbler pin near the tip thereof. The key has a bitted section at which one or more bittings are formed and a non-bitted section bitting that is devoid of bitting. The bittings extend at a constant depth to an edge of the key blade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.