Biscuit jointer
US5273091A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Oct 20, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T409/306216
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The present invention provides an improved biscuit jointer which allows a ruler guide to be kept completely level during fine adjustment of the vertical position and angular orientation of the ruler guide with respect to a ruler and accurately abuts against a workpiece. The biscuit jointer of the invention includes: a circular cutter blade; a base accommodating the cutter blade; a housing containing a motor for driving the cutter blade and being slidable relative to the base; a ruler disposed on one end of the base to abut against an end face of a workpiece; and a ruler guide vertically slidable along the ruler. The ruler has a vertically extending slide edge plane on a predetermined end thereof, and the ruler guide has a linear guide on the predetermined end thereof, which slides against the slide edge plane. The ruler grade further includes a spur gear engaging with a toothed rack formed on the ruler, which allows vertical movement of the ruler guide along the ruler. A leaf spring applies pressure against the contact of the linear guide with the slide edge plane to secure the attachment of the ruler guide to the ruler. The biscuit jointer is further provided with a clamp to restr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.