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Title: Vibrator for seismic geophysical prospecting

Abstract

An improved vibrator system is described for seismic geophysical prospecting, comprising: a vibrator comprising a first part, or dynamic vibrator part (VD) attached to a base plate in contact with the earth and a second part or vibrator stationary part (VS). Sound attenuating ear protection apparatus is described comprising: a pair of air evacuated, sealed chamber members disposably covering the ears of a user to lie between the user eardrums and an ear external source of undesirable sound energy; the air evacuated sealed chamber members each including first and second smooth surface portions with each surface portion having a spherical segment terminated by an annular flange lip shape and being disposable over one external ear of the user with one spherical segment, adjacent the ear being of different, higher mechanical resonance frequency with respect to the other spherical segment distal of the ear; the surface segment distal of the ear; the annular flange lips of the first and second surface portions being joined together in a junction disposed intermediate of the first and second spherical surface portions and perpendicular of the flange lips; resilient suspension means engaged with the head of the user and with the sealed chamber members formore » supporting the sealed chamber members in selected position over the user external ears.« less

Inventors:
Publication Date:
OSTI Identifier:
6825945
Patent Number(s):
US 4658930
Assignee:
Industrial Vehicles International, Inc., Tulsa, OK
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 28 Sep 1982
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 03 NATURAL GAS; 58 GEOSCIENCES; NATURAL GAS DEPOSITS; EXPLORATION; SEISMIC SURVEYS; PETROLEUM DEPOSITS; SEISMIC SOURCES; DESIGN; OPERATION; FLUID FLOW; MECHANICAL VIBRATIONS; PRESSURIZING; PUMPS; SEALS; SPACE DEPENDENCE; TIME DEPENDENCE; VALVES; WORKING FLUIDS; CONTROL EQUIPMENT; EQUIPMENT; FLOW REGULATORS; FLUIDS; GEOLOGIC DEPOSITS; GEOPHYSICAL SURVEYS; MINERAL RESOURCES; RESOURCES; SURVEYS; 020200* - Petroleum- Reserves, Geology, & Exploration; 030200 - Natural Gas- Reserves, Geology, & Exploration; 580203 - Geophysics- Geophysical Survey Methods- (1980-1989)

Citation Formats

Bird, J M. Vibrator for seismic geophysical prospecting. United States: N. p., 1987. Web.
Bird, J M. Vibrator for seismic geophysical prospecting. United States.
Bird, J M. 1987. "Vibrator for seismic geophysical prospecting". United States.
@article{osti_6825945,
title = {Vibrator for seismic geophysical prospecting},
author = {Bird, J M},
abstractNote = {An improved vibrator system is described for seismic geophysical prospecting, comprising: a vibrator comprising a first part, or dynamic vibrator part (VD) attached to a base plate in contact with the earth and a second part or vibrator stationary part (VS). Sound attenuating ear protection apparatus is described comprising: a pair of air evacuated, sealed chamber members disposably covering the ears of a user to lie between the user eardrums and an ear external source of undesirable sound energy; the air evacuated sealed chamber members each including first and second smooth surface portions with each surface portion having a spherical segment terminated by an annular flange lip shape and being disposable over one external ear of the user with one spherical segment, adjacent the ear being of different, higher mechanical resonance frequency with respect to the other spherical segment distal of the ear; the surface segment distal of the ear; the annular flange lips of the first and second surface portions being joined together in a junction disposed intermediate of the first and second spherical surface portions and perpendicular of the flange lips; resilient suspension means engaged with the head of the user and with the sealed chamber members for supporting the sealed chamber members in selected position over the user external ears.},
doi = {},
url = {https://www.osti.gov/biblio/6825945}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 21 00:00:00 EDT 1987},
month = {Tue Apr 21 00:00:00 EDT 1987}
}