Gas combustion type driving tool
US7762443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2006 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Mar 30, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C5/1627
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
When gas is explosively burnt within a combustion chamber, a striking piston is impulsively driven to drive out a fastener from a nose portion. A gas tube is provided between the combustion chamber and a feed cylinder which accommodates a feed piston that reciprocally moves a feed claw engaged with and disengaged from connected fasteners to a nail feed direction for feeding to the nose portion side and an evacuation direction in opposite thereto. A check valve having a restriction hole is disposed on the way of the gas tube so as to be opened and closed. The check valve is normally urged by a spring to a closed direction and opens against the force of the spring by the gas pressure from the combustion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.