Combustion-powered tool assembly
US5197646A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 9, 1992 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Mar 9, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/188
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
In a combustion-powered, fastener-driving tool, a cylinder body mounted fixedly within a housing structure has a combustion chamber defining an axis. A valve sleeve functions to open and close the combustion chamber. A piston operative within the combustion chamber and a driving blade moveable with the piston function to drive a fastener into a workpiece. An improved linkage for moving the valve sleeve includes a workpiece-contacting element and a pair of arms attached to such element and disposed alongside the cylinder body and the nosepiece. An improved, one-piece, interlocking member prevents a trigger from being actuated unless the combustion chamber is closed. Thus, a simple, compact, lightweight tool is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.