Self-priming portable device
US7814871B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2002 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Apr 24, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A portable powered device such as a tool, comprising a housing within which is defined a combustion chamber (8) for combustion of a mixture of fuel and a combustion-supporting gas, which mixture is compressed so as to be subjected to a pressure in excess of the ambient atmospheric pressure prior to combustion, combustion of the fuel/combination-supporting gas mixture providing the power by which the device performs its intended task, and wherein the combustion and/or a further combustive event provides the power to compress a successive fuel/combination-supporting gas mixture, such that a successive cycle of operation of the device may be performed without requiring manual compression of a fuel-combustion-supporting gas mixture by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.