Projectile powered piston
US4691803A · kind A · utility
Inventor
Key dates
| Filing date | Nov 18, 1985 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Nov 18, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S181/401
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A transportable seismic energy source having a baseplate for contacting the earth, an upper master cylinder affixed at its lower end to the base plate and extending uprightly from it, a receiving cylinder of outside diameter less than the internal diameter of the master cylinder and supported coaxially within the upper portion of the master cylinder, the master cylinder and receiving cylinder being filled with liquid, a slug firing gun mounted to the master cylinder and arranged so that the gun muzzle extends coaxially and above the receiving cylinder. The internal diameter of the receiving cylinder being greater than the maximum diameter of a slug as distorted on impact with the liquid in the cylinders so that when a slug is fired from the muzzle it contacts the liquid in the cylinders and passes it downwardly through the receiving cylinder, the energy of impact of the slug gun muzzle being transmitted to the liquid within the cylinders and from the cylinder baseplate to the earth for propagation in the earth. In a preferred embodiment the internal bore of the master cylinder is provided with serrations which impede the downward flow of fluid to more effectively couple the energy …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.