Device for generating acoustic waves by implosion

US3997022A · kind A · utility

Assignee

• Institut Francais du Petrole des Carburants et Lubricants et Enterprise de Recherches et d'Activities Petroliers Elf · FR

Inventor

• Jacques Cholet · L'Étang-la-Ville, FR

Key dates

• Filing date: May 16, 1975
• Grant date: Dec 14, 1976
• Expiry date: May 16, 1995

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S181/402
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Device for generating acoustic waves in a fluid medium by implosion, comprising a main cylinder, a main piston slidably mounted thereinto, said piston having a hollow cylindrical portion housing another cylinder solid with the main one and, through the bottom of which passes the hollow rod of another piston, actuated by hydraulic means and which drives in translation the main piston. By means of an annular valve, solid with the main piston, and further hydraulic means, the main piston may be locked in a position of spaced relationship with respect to the main cylinder and abruptly unlocked, thereby generating an implosion.