Laser arbor
US5862727A · kind A · utility
Inventor
Key dates
| Filing date | Mar 10, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Mar 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/21
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A laser arbor is provided that will display a cutting line on a work piece to be cut by a rotary saw. The laser is operated by a centrifugal switch mounted within the laser arbor along with a laser diode or the like and a battery. Because of the rotation of the laser with the blade and the persistence of the human eye, the moving light spot from the laser appears as a single line, hence it is not necessary as in the prior art to produce light divergence in the plane parallel to the blade plane. For that purpose, it is preferable to employ a light source having a wavelength that lies in a region to which the eye is sensitive, which in practice will typically mean a wavelength in the upper region of the red. Placement of the laser inwardly from the cutting surface of the blade eliminates the danger of any damage occurring to the laser as a result of debris from the cutting process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.