Drywall sheet trimmer
US5720104A · kind A · utility
Inventor
Key dates
| Filing date | Jan 27, 1997 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Jan 27, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB26B29/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A compact, reliable and convenient drywall-sheet trimmer has opposed cutter disks (7, 8) positioned rotationally in opposing walls (3, 4) of a trimmer channel (2) having a slide bar (19) that is adjustable in positioning intermediate the opposing cutter disks and a channel bottom (21). Pinion teeth (25) on an adjustment shaft (24) are rotated by helical worm gearing (28) with an adjustment knob (30) to actuate rack teeth (26) on slide rods (22) attached to the slide bar for adjusting distance of the slide bar from the cutter disks to control widths of trimming cuts. Surfaces of drywall sheets (6) are scored or cut to cause the drywall sheets to be breakable by applying bending moment along lines of scored or cut surface material and/or indentations caused by cutting entry of the opposed cutter disks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.