Lock cylinder with a pivotable closure
US4594866A · kind A · utility
12Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1985 |
| Grant date | Jun 17, 1986 |
| Priority date | — |
| Expiry date | Jul 1, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/8649
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The lock cylinder (1) has in its widened head (2) a pivotable closing flap (4) which closes the insertion orifice of the key channel. One end (8) of a torsion spring (7) rests against the face of the closing flap (4) directed towards the key channel. Before assembly, the other end (12) of the torsion spring (7) projects above the outer surface of the cylinder (1) through a slit (13) in the head (2) of the cylinder (1), is bent round after assembly and interacts with a stop (14) connected to the cylinder (1). This design of the lock cylinder makes it easier to assemble it.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.