Motor-driven chop saw having improved lower blade guard arrangement
US5146825A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 1991 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Jul 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/7772
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A chop saw arrangement having an improved lower blade guard pivoting mechanism. An upper safety guard is pivotally supported to a hinging member, and a circular saw blade is rotatably supported to the upper safety guard. A collar is attached to the upper safety guard, and a swingable arm pivotally connected to a supporting arm has a cam portion engageable with the collar. Angular position of the swingable arm is defined by the abutment between the cam and the collar. The swingable arm has an end portion pivotally connected to one end of a link member whose other end is pivotally connected to a lower blade guard. The lower blade guard is pivotally supported to the upper safety guard coaxially with the circular saw blade. Angular position of the lower blade guard is defined by the pivotal movement of the swingable arm through the link member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.