Cordless concrete nailer with improved power take-off mechanism
US10987790B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2017 |
| Grant date | Apr 27, 2021 |
| Priority date | — |
| Expiry date | Apr 8, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/008
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A power take-off (PTO) assembly of a cordless electric concrete driver includes a bracket supporting a solenoid and a compression spring and a linkage arm coupled between a plunger of the solenoid and the compression spring. The linkage arm is biased by the compression spring toward the nail driver. A carrier supports or carries a pinch roller and the carrier is pivotably mounted to the bracket via a pivot pin. An engaging surface is movable with the plunger between an engagement position in which the engaging surface engages a cooperating engaging surface of the carrier and orients the carrier into a corresponding engagement orientation, and a disengagement position in which the engaging surface is spaced away from the cooperating engaging surface of the carrier, allowing the carrier to pivot outside the corresponding engagement orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.