Top-and-bottom latch lock
US7013688B2 · kind B2 · utility
10Cited by
8References
1Claims
0Family size
Inventor
Key dates
| Filing date | Apr 4, 2003 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Apr 4, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0837
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A top-and-bottom latch lock includes symmetrical L-shaped control rods provided with pressing portions for connecting to springs. The ends of the control rods are configured with braking pieces provided with bumps, and symmetrical gulfs are defined in a flat member to accommodate the bumps of the braking pieces. A turning axis having an opening is disposed above the flat member, and an oscillating shaft is disposed below the flat member. Accordingly, the control rods are extended outward or contracted inward through turning of a rotation body, a key or handles of the lock, thereby locking or opening a door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.