Locking apparatus
US5520035A · kind A · utility
25Cited by
11References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Nov 14, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7881
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A key blank including a generally elongate shaft portion defining a key combination surface adapted to have formed thereon key cuts which define a key combination, the key blank including a movable pin element retained within the elongate shaft portion, the movable pin element being displaceable in a single direction, outwardly from the key combination surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.