Doorknob with a lock
US6993945B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Nov 3, 2004 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Nov 3, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5832
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The doorknob with a lock has a bolt assembly, a lock activating assembly, an outer doorknob assembly and an inner doorknob assembly. The bolt assembly is mounted in a door and has a bolt head and a rotatable plug. The lock activating assembly has a base, a head, an outer clutch plate and an inner clutch plate. The base and the head respectively have an annular longitudinal protrusion, and the base is covered by the annular longitudinal protrusion. Each annular longitudinal protrusion has two opposite gaps. The outer and inner clutch plates respectively have a long protruding end, a short end, a longitudinal slot and a transverse slot. The ends of the clutch plates are slidably mounted in the gaps in the annular longitudinal protrusion, and the long protruding ends selectively engage the gaps in the annular longitudinal protrusion to lock and unlock the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.