Impact hammer tool bit retainer incorporating shielding ring
US8746702B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 25, 2008 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Aug 25, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/3493
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A retainer for holding a tool bit on an impact hammer including a shielding ring at the retainer distal end. The retainer includes an axially slidable sleeve whereby tool bits may be selectively exchanged on the retainer and whereby tool bits are secured in the retainer for use thereof. The sleeve is axially slidable toward the retainer distal end for placing the retainer in the locked or in-use position, and is axially slidable away from the distal end against the force of a spring for placing the retainer in the tool bit release position. The shielding ring extends radially beyond the axially slidable sleeve for preventing inadvertent axial movement of the sleeve to the release position by debris and/or objects which come in contact with the retainer distal end, and thereby aiding in the prevention of inadvertent release of the tool bit during use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.