Percussion apparatus
US4608853A · kind A · utility
0Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 7, 1985 |
| Grant date | Sep 2, 1986 |
| Priority date | — |
| Expiry date | Feb 7, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/479
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Percussion apparatus having a compressed air inlet (3) and serving to impart percussive movement to a tool (10), the said tool (10) sliding inside an envelope (1) fixed to the apparatus and being terminated by a spherical portion (22), includes the improvement wherein the said tool (10) includes a hollow tube (13) with one end (21) holding a ball (22) captive, which ball is urged against the end (21) by a spring (24) lodged in the tube (13). When the ball (22) is worn, it is easily changed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.