Cutting valve
US6000311A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8863
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cutting valve, for example, for a transversing incore probe system, comprises a valve box, a cylinder formed to the valve box, a piston disposed in the cylinder to be slidable therein, a cutting blade mounted to one end of the piston, a powder plug which is provided to another end of the piston and in which a powder is filled up, the powder being exploded by the operation of the powder plug, and a through hole, through which a cable or wire to be cut by the cutting blade penetrates, formed to the cylinder so as to extend in a direction normal to the sliding direction of the piston and to communicate with an inside of the cylinder. The piston is slid together with the cutting blade in an accelerated manner at a time when the powder is exploded. A kind and an amount of the powder are predetermined so that the piston is accelerated in the sliding motion in the cylinder at a speed of more than 40 m/sec. by a pressure at the time of exploding the powder and the cutting blade is formed of a material such as austenite stainless steel having a hardness less than that of a material forming the cable such as piano wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.