Drill guide fixture for drilling, to open, disc padlocks, rectangular padlocks, door knobs and lever locks
US6305886A · kind A · utility
Inventor
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Jun 30, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/567
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drill guide fixture (12) and method are provided for drilling door locks and padlocks of various configurations and sizes. The drill guide fixture (12) has a guide jaw (16), a latch jaw (18) and a guide arm (20), which are secured together with a latch bolt (22) and a guide bolt (24). The guide arm (20) is of an elongated shape having a longitudinally extending slot in a central portion thereof for securing with the guide bolt (24) to one of the guide jaw (16) and the latch jaw (18). The guide jaw (16) and the latch jaw (18) each have a v-shaped notch (72, 74), in each of which scalloped-shaped recesses (76, 78, 80, 82) are formed to aid in clamping the guide and latch jaws (16, 18) to door knobs and round shaped locks. A drill guide hole (54) is formed through the guide arm (20), spaced apart from the longitudinally extending slot (66), for aligning with a cylinder (50) and guiding a drill (56) into the tumbler pins (192) of the cylinder (50). Some padlocks (132) have a screw (140) holding a cylinder (138) to the padlock body (136), such that the screw (140) may be drilled to release the cylinder (138) so that it may be removed from within the padlock body (136) for re-keying ra…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.