Power tool having a transmission vent
US7946353B2 · kind B2 · utility
0Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2009 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Aug 1, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D2250/365
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A power tool, such as a hammer drill and/or a chiseling hammer, includes a lubricated transmission arranged in a sealed transmission box. The transmission box is in fluid connection with the atmosphere via a venting channel. A sealing element is arranged in the venting channel. The sealing element cooperates with the venting channel to create a meandering pathway for air to pass through the venting channel so that leakage of lubricant between the sealing element and the venting channel is at least substantially prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.