Gas combustion type driving tool
US7703648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Mar 13, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/08
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
When a movable sleeve 11 on a cylinder moves upward, a combustion chamber 5 in a sealed state is formed. Mixed gas is explosively burnt within the combustion chamber 5 so as to drive a fastener out. A lock cylinder 22 is disposed beneath the movable sleeve 11. A lock piston 23 is housed within the lock cylinder 22 so as to be movable in an up/down direction. The upper end of the lock piston 23 is capable of being engaged with a holding member 12 which is interlocked with the movable sleeve 11. The lower portion of the lock cylinder is coupled to the combustion chamber via a gas tube 24. The gas tube 24 is provided with a check valve 25. The lock cylinder 22 is provided with an electromagnetic valve 27. The electromagnetic valve 27 opens upon the lapse of a predetermined time period after the combustion within the combustion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.