Fastener feeder delay for fastener driving tool
US8302832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2010 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Mar 23, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C5/16
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fastener driving tool includes a power source including a cylinder, a piston with a driver blade reciprocating in the cylinder, a tool nose associated with the power source for receiving the driver blade for driving fasteners fed into the nose, and a magazine housing a supply of the fasteners. A magazine feeder mechanism is associated with the magazine for sequentially feeding fasteners into the nose, and the feeder mechanism includes a reciprocating feed piston. A conduit is connected between a port in the cylinder and the feed mechanism for diverting combusted gas for activating the feed piston. The port is disposed in the cylinder a specified distance below a piston prefiring position, and the distance is reflective of a delay of feeding the gas to the feed piston at least until engagement between an end of the driver blade and a head of a fastener in the tool nose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.