Dual lock assembly with a direction-changeable latch bolt
US6651466B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Oct 8, 1999 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Oct 8, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0971
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A dual lock system includes a housing for enclosing an actuating mechanism, a latch bolt, a dead bolt, a stop block, a lock core, and a safe therein. Upper and lower openings are provided in a faceplate to allow extension and retraction of the latch bolt and the dead bolt. Two upper actuating plates are pivotable by operation of the inside handle and the outside handle, respectively. When the dual lock assembly is in a locked status, rotation of the inside handle is allowed to simultaneously retract the deadbolt and the latch bolt, yet rotation of the outside handle is prohibited by a stop piece of the stop block. The latch bolt can be rotated through 180° when extended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.