Combination hole puncher with cartridge of reinforcers
US7631679B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Nov 13, 2006 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1785
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A hole puncher and reinforcer for punching holes in sheets of material and for concurrently applying reinforcement to the sheets of material about the holes punched employs a removable cartridge containing a punch rod upon which a supply of reinforcement rings is mounted. The cartridge fits into a tubular socket located on the stanchion of the puncher and reinforcer frame. The reinforcing rings are mounted on the lower end of a cylindrical punch rod and a pressure plate attached to the punch rod forcefully presses each reinforcing ring in turn against a sheet of material as the cutting edge of the punch rod concurrently punches a hole in the sheet of material. When the supply of reinforcing rings is depleted, the entire cartridge is removed by rotating the punch lever arm away from alignment with the punch rod. A hook on the underside of the punch lever arm engages a lug on the cartridge, and lifts the cartridge out of the socket stanchion to facilitate removal and replacement of the cartridge. A fresh cartridge, preloaded with a new punch and a supply of reinforcing rings can then be dropped into the socket on the punching mechanism stanchion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.