Integrated check pawl, last nail-retaining, and dry fire lock-out mechanism for fastener-driving tool
US6966476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2003 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Jul 30, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C5/1627
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fastener-driving tool includes an integrated function member that performs at least two of the following three functions: a check pawl function, a last fastener-retaining function, and a dry fire lock-out function. In the disclosed embodiment, the integrated function member is provided as a lever-type structure that constitutes part of the access door assembly by means of which access is gained to the fastener drive track along which fasteners (e.g., roofing nails) are fed to the driving portion of the tool. Also disclosed is an improved method of retaining the last nail in the drive track by a lateral head gripping action and a tool for performing the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.