Powered devices
US7281502B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2004 |
| Grant date | Oct 16, 2007 |
| Priority date | — |
| Expiry date | Apr 22, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Disclosed is a self-priming portable powered device such as a tool, comprising a housing within which are defined a priming combustion chamber and a main combustion chamber, within which chambers during operation of the device there is a combustion of a combustible fuel and a combustion-supporting gas; and wherein a combustion event in the priming combustion chamber causes the formation of a mixture of fuel and combustion-supporting gas in the main combustion chamber which is compressed at a pressure above ambient pressure, subsequent combustion of the compressed mixture in the main combustion chamber acting on a work piston which, directly or indirectly, performs the intended task.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.