Lubricant pump for powered hammer
US7401661B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2007 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Jun 27, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2217/0092
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A vibration reduction and lubricating mechanism for a powered hammer includes a power driven piston in a cylinder that reciprocatingly drives a ram, which repetitively strikes a beat piece, which repetitively strikes a tool received in a tool holder. The vibration reduction and lubricating mechanism includes a first chamber defined in a housing of the powered hammer. A second chamber is defined within an end portion of the cylinder facing the beat piece, forward of the ram. A passageway is in communication with the first and second chambers. A counter mass is mounted for oscillating movement within the first chamber. When the hammer is operated, the counter mass is caused to oscillate to counteract vibration in the housing and to cause lubrication fluid to move between the first and second chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.