Acoustics – Geophysical or subsurface exploration – Well logging
Patent
1990-04-20
1991-07-30
Moskowitz, Nelson
Acoustics
Geophysical or subsurface exploration
Well logging
181102, 181121, 367912, G01V 140
Patent
active
050352970
ABSTRACT:
An anti-bounce device for a mass striking a target element, with the device including a counter mass and a linking arrangement for holding the counter mass spaced from the mass and a braking arrangement for delaying the counter mass so as to put the counter mass in phase opposition with the mass as the mass bounces after impact thereby dissipating any bouncing force. The linking arrangement may take the form of a volume of fluid in a chamber provided between the mass and counter mass, and the linking arrangement and braking arrangement may also include a layer of a damping material or deformable or flexible elements acting by friction.
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Institut Francais du Pe'trole
Moskowitz Nelson
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