Cutting-off saw with safety protection device
US9393659B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2011 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Mar 3, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/7693
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A cutting-off saw with a safety protection device, including a base; a support arm arranged on the base; a cutting blade coupled to the support arm by a driving head; a fan-shaped fixed guard and a movable guard configured to enclose the cutting blade and can be combined into a single disc; an extension arm coupled to a top portion of the support arm; the movable guard coupled to one end of a guard connecting rod; the other end of the guard connecting rod formed into an arc-shaped elbow and coupled to a stop button and the extension arm. An arc-shaped bayonet having a radian matching with that of the arc-shaped elbow of the guard connecting rod is arranged on a lower portion of the stop button. It ensures that the movable guard will never be turned upwards during the operation of loading or unloading a workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.