Anti-bounce device for a mass striking a target element

Details Anti-bounce device for a mass striking a target element Anti-bounce device for a mass striking a target element

1991-04-11

1992-05-26

Moskowitz, Nelson

Acoustics

Geophysical or subsurface exploration

Well logging

181121, 175 1, 381 71, G01V 140

Patent

active

051158817

ABSTRACT:
An anti-bounce device for a mass striking a target element, with the device including a counter-mass and an arrangement for holding the counter-mass spaced from the mass at a predetermined distance and for braking the mass and the counter-mass to delay the counter-mass so as to put the counter-mass in a phase opposition with the mass as the mass bounces after impact thereby dissipating any bouncing forces. The linking and braking arrangement may include a volume of fluid in a chamber provided between the mass and the counter-mass or a layer of damping material interposed between the mass and counter-mass.

REFERENCES:
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patent: 4715471 (1987-12-01), Fulkerson et al.
patent: 4770268 (1985-09-01), Magneuille
patent: 4773501 (1988-09-01), Dedole et al.
patent: 4796723 (1989-01-01), Laurent et al.
patent: 4923030 (1990-05-01), Meymier
patent: 4984549 (1991-01-01), Mererich et al.
patent: 4987969 (1991-01-01), Boyle et al.
patent: 4991685 (1991-02-01), Airhart
patent: 5035297 (1991-07-01), Meynier

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