Pneumatically operated fastener driving tool
US7156012B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2005 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Apr 30, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/043
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A pneumatically operated fastener driving tool capable of reducing a time period from operation timing of a trigger to downward movement of a driver blade for fastener driving, and reducing a time period from the release timing of the trigger to a timing at which respective components are returned to their initial positions for a subsequent nail driving. As components a main valve and a trigger valve is provided. The main valve is movable within a main valve chamber connected to a main valve control channel. The trigger valve selectively provides fluid communication between the accumulator and a main valve chamber through the main valve control channel and between the main valve chamber and the atmosphere through the main valve control channel. A ratio of cross-sectional area of the main valve control channel to an internal volume of the main valve chamber is defined to a specified ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.