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1. WO1996002854 - GEOPHONE SHOCK ABSORBER

Publication Number WO/1996/002854
Publication Date 01.02.1996
International Application No. PCT/US1995/009280
International Filing Date 20.07.1995
Chapter 2 Demand Filed 19.02.1996
IPC
F16F 1/32 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
1Springs
02made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
32Cup springs; Dished disc springs
F16F 15/03 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
15Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
02Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system
03using electromagnetic means
F16F 15/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
15Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
02Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system
04using elastic means
F16F 15/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
15Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
02Suppression of vibrations of non-rotating, e.g. reciprocating, systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating system
04using elastic means
06with metal springs
G01V 1/18 2006.01
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
1Seismology; Seismic or acoustic prospecting or detecting
16Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
18Receiving elements, e.g. seismometer, geophone
CPC
B65C 2210/004
BPERFORMING OPERATIONS; TRANSPORTING
65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
CLABELLING OR TAGGING MACHINES, APPARATUS, OR PROCESSES
2210Details of manually controlled or manually operable label dispensers
0037Printing equipment
004using printing heads
F16F 1/324
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
1Springs
02made of steel or other material having low internal friction
32Belleville-type springs
324characterised by having tongues or arms directed in a generally radial direction, i.e. diaphragm-type springs
F16F 15/03
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
15Suppression of vibrations in systems
02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
03using ; magnetic or; electromagnetic means
F16F 15/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
15Suppression of vibrations in systems
02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
04using elastic means
F16F 15/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
15Suppression of vibrations in systems
02Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
04using elastic means
06with metal springs
G01V 1/181
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
1Seismology; Seismic or acoustic prospecting or detecting
16Receiving elements for seismic signals
18Receiving elements, e.g. seismometer, geophone ; or torque detectors, for localised single point measurements
181Geophones
Applicants
  • SHAW INDUSTRIES LTD. [CA/CA]; 25 Bethridge Road Rexdale, Ontario M9W 1M7, CA (AllExceptUS)
  • WOO, Daniel, Ming-Kwong [US/US]; US (UsOnly)
Inventors
  • WOO, Daniel, Ming-Kwong; US
Agents
  • THOMPSON, Jennings, B.; Vaden, Eickenroht, Thompson & Feather, L.L.P. Suite 1100 One Riverway Houston, TX 77056-1982, US
Priority Data
08/277,60320.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) GEOPHONE SHOCK ABSORBER
(FR) AMORTISSEUR DE CHOCS POUR GEOPHONE
Abstract
(EN)
A geophone is disclosed that has a cylindrical housing (102) closed at one end by a bottom (117) and the other end by a top (115). A magnet assembly with pole pieces (114, 120) at each end of the magnet (104) is centrally mounted in the housing (102) providing an annular space between the magnet assembly and the housing. A coil form (108) is located in the annular space. Springs (110, 112) support the coil form (108) for axial movement relative to the magnet assembly along the longitudinal axis of the housing (102). Washers (126, 127, 128, 129) are included on the upper and lower sides of each of the springs to enhance the life span of the springs by reducing the damage caused by torsional forces experienced by the springs (110, 112) during normal operation and rough handling. Also incorporated in the geophone are resilient members (140, 142) mounted between the coil form (108) and the housing (102) to prevent the coil form (108) from directly hitting the housing (102) and thereby reduce the amount of frequency shift experienced by the geophone over its life span.
(FR)
Cette invention se rapporte à un géophone, qui comporte un logement cylindrique (102) fermé à l'une de ses extrémités par un fond (117) et à l'autre extrémité par un dessus (115). Un ensemble à aimant, muni de pièces polaires (114, 120) à chaque extrémité de l'aimant (104), est monté au centre du logement (102), créant ainsi un espace annulaire entre l'ensemble à aimant et ledit logement. Une carcasse de bobine (108) est disposée dans cet espace annulaire. Des ressorts (110, 112) soutiennent la carcasse de bobine (108) pour permettre son mouvement axial par rapport à l'ensemble à aimant le long de l'axe longitudinal du logement (102). Des rondelles (126, 127, 128, 129) sont placées sur les côtés supérieur et inférieur de chacun des ressorts, pour augmenter la durée de vie de ces ressorts, en réduisant les dommages causés par les forces de torsion subies (110, 112) aussi bien dans des conditions de fonctionnement normales que dans des conditions de traitement rudes. Sont également incorporés dans le géophone des éléments flexibles (140, 142) montés entre la carcasse de bobine (108) et le logement (102), afin d'empêcher ladite carcasse de bobine (108) de heurter directement le logement (102) et afin de réduire ainsi l'ampleur du décalage de fréquence subi par le géophone pendant sa durée de vie.
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