Engine with liquid piston
US7615048B2 · kind B2 · utility
1Cited by
41References
3Claims
0Family size
Inventor
Key dates
| Filing date | Aug 23, 2005 |
| Grant date | Nov 10, 2009 |
| Priority date | — |
| Expiry date | Mar 26, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/0262
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An engine comprises a liquid piston disposed within a chamber of an engine body. The chamber is defined by at least one wall. The liquid piston has one or more free surfaces that are not in contact with the chamber wall. A laser directly heats the free surface of the liquid piston. A gas spring is disposed within the chamber adjacent the free surface of the liquid piston and within the propagation path of the laser energy. The engine also includes a spring mechanism. The spring mechanism is positioned within the housing to exert pressure on another surface of the liquid piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.