Key punch machine
US5054350A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Sep 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8843
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Apparatus for making a duplicate key when an original key is unavailable wherein the notches in the blade of the key correspond to predetermined coded depth and spacing information. An index card having indexes thereon corresponding to predetermined coded depth and spacing information is inserted into a housing and a key having a blank blade is inserted into a key holder where it is held in a series of predetermined positions relative to a key nipping tool and corresponding to the coded depth and spacing information on the index card. Key blank positioning is indicated by a pair of pointers having arcuate movement corresponding to the coded indicia on the index card. The key blank is positioned, in accordance with the coded indicia on the index card, by linear movement of a key carrying carriage in both lateral and longitudinal directions relative to the key nipping tool, with such lateral and longitudinal movement corresponding to the depth and spacing therebetween of notches placed on the key blade and also corresponding to the arcuate movement of the pointers. Notches are placed in the key blade by depressing a handle which rotates a rocker assembly which in turn actuates a slid…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.