CA1123947A - Seismic land source - Google Patents
Seismic land sourceInfo
- Publication number
- CA1123947A CA1123947A CA302,126A CA302126A CA1123947A CA 1123947 A CA1123947 A CA 1123947A CA 302126 A CA302126 A CA 302126A CA 1123947 A CA1123947 A CA 1123947A
- Authority
- CA
- Canada
- Prior art keywords
- bell
- diaphragm
- pan
- earth
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 26
- 230000033001 locomotion Effects 0.000 claims abstract description 17
- 230000009975 flexible effect Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims 3
- 230000003247 decreasing effect Effects 0.000 claims 2
- 230000002452 interceptive effect Effects 0.000 claims 2
- 210000000188 diaphragm Anatomy 0.000 abstract description 30
- 238000010304 firing Methods 0.000 abstract description 7
- 239000011435 rock Substances 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- XUKUURHRXDUEBC-KAYWLYCHSA-N Atorvastatin Chemical compound C=1C=CC=CC=1C1=C(C=2C=CC(F)=CC=2)N(CC[C@@H](O)C[C@@H](O)CC(O)=O)C(C(C)C)=C1C(=O)NC1=CC=CC=C1 XUKUURHRXDUEBC-KAYWLYCHSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004705 High-molecular-weight polyethylene Substances 0.000 description 1
- 101150006573 PAN1 gene Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- -1 marshland Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/30—Input circuits therefor
- A61B5/304—Switching circuits
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3925—Monitoring; Protecting
- A61N1/3931—Protecting, e.g. back-up systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/30—Input circuits therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/30—Input circuits therefor
- A61B5/307—Input circuits therefor specially adapted for particular uses
- A61B5/308—Input circuits therefor specially adapted for particular uses for electrocardiography [ECG]
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- Biophysics (AREA)
- Cardiology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Electrotherapy Devices (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Vibration Prevention Devices (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US805,552 | 1977-06-10 | ||
| US05/805,552 US4164215A (en) | 1977-06-10 | 1977-06-10 | Electrode switching means for use in a defibrillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1123947A true CA1123947A (en) | 1982-05-18 |
Family
ID=25191893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA302,126A Expired CA1123947A (en) | 1977-06-10 | 1978-04-27 | Seismic land source |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4164215A (en]) |
| JP (1) | JPS6115843Y2 (en]) |
| CA (1) | CA1123947A (en]) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440172A (en) * | 1980-10-02 | 1984-04-03 | Mieczyslaw Mirowski | Apparatus for combining pacing and cardioverting functions in a single implanted device |
| JPS57162798U (en]) * | 1981-04-08 | 1982-10-13 | ||
| JPS6010598U (ja) * | 1983-07-04 | 1985-01-24 | 初鹿 衛 | ロ−ルペ−パ−用ホルダ− |
| JPS61131995U (en]) * | 1985-02-07 | 1986-08-18 | ||
| US4800894A (en) * | 1986-11-07 | 1989-01-31 | Medical Research Laboratories | Protection of EKG monitor against electrical surgical interference |
| US4870341A (en) * | 1986-11-26 | 1989-09-26 | First Medical Devices Corporation | Impedance measurement circuit |
| US4889134A (en) * | 1988-03-25 | 1989-12-26 | Survival Technology, Inc. | Device for measuring multiple channels of heartbeat activity and encoding into a form suitable for simultaneous transmission over |
| US4917099A (en) * | 1988-07-13 | 1990-04-17 | Physio-Control Corporation | Method and apparatus for differential lead impedance comparison |
| US4993423A (en) * | 1988-07-13 | 1991-02-19 | Physio-Control Corporation | Method and apparatus for differential lead impedance comparison |
| JPH0240292U (en]) * | 1988-09-13 | 1990-03-19 | ||
| US5105821A (en) * | 1989-07-18 | 1992-04-21 | Reyes Rey S | Interface cable for connecting bedside electrocardiograph monitor to portable defibrillator/electrocardiograph machine |
| US4974600A (en) * | 1989-07-18 | 1990-12-04 | Reyes Rey S | Interface cable for connecting bedside electrocardiograph monitor to portable defibrillator/electrocardiograph machine |
| US5224475A (en) * | 1991-11-20 | 1993-07-06 | Medtronic, Inc. | Method and apparatus for termination of ventricular tachycardia and ventricular fibrillation |
| DE69305156T2 (de) * | 1993-03-20 | 1997-02-13 | Hewlett Packard Gmbh | Empfänger für Differenzsignale |
| US6148233A (en) | 1997-03-07 | 2000-11-14 | Cardiac Science, Inc. | Defibrillation system having segmented electrodes |
| US6161040A (en) * | 1999-02-16 | 2000-12-12 | Pacesetter, Inc. | Current limiter for an implantable cardiac device |
| US6885562B2 (en) * | 2001-12-28 | 2005-04-26 | Medtronic Physio-Control Manufacturing Corporation | Circuit package and method for making the same |
| EP2497418A1 (en) * | 2011-03-10 | 2012-09-12 | Koninklijke Philips Electronics N.V. | Current protection for electrode-based monitoring systems |
| US10413251B2 (en) | 2012-10-07 | 2019-09-17 | Rhythm Diagnostic Systems, Inc. | Wearable cardiac monitor |
| US10610159B2 (en) | 2012-10-07 | 2020-04-07 | Rhythm Diagnostic Systems, Inc. | Health monitoring systems and methods |
| US10244949B2 (en) | 2012-10-07 | 2019-04-02 | Rhythm Diagnostic Systems, Inc. | Health monitoring systems and methods |
| US12109047B2 (en) | 2019-01-25 | 2024-10-08 | Rds | Health monitoring systems and methods |
| JP2022546991A (ja) | 2019-08-28 | 2022-11-10 | アールディーエス | バイタルサイン又は健康モニタリングシステム及び方法 |
| US12233276B2 (en) | 2020-12-03 | 2025-02-25 | Physio-Control, Inc. | Automatic lead switching |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1564084B2 (de) * | 1966-07-28 | 1977-05-12 | Hellige Gmbh, 7800 Freiburg | Gleichstrom-defibrillator |
| US3548807A (en) * | 1967-05-08 | 1970-12-22 | Cardiac Electronics Inc | Cardiac signal loss detector |
| US3587562A (en) * | 1968-02-01 | 1971-06-28 | Becton Dickinson Co | Physiological monitoring system |
| US3611174A (en) * | 1969-12-09 | 1971-10-05 | American Optical Corp | Electrocardiographic monitoring amplifier |
| US3653387A (en) * | 1970-05-08 | 1972-04-04 | Cardiac Electronics Inc | Protector circuit for cardiac apparatus |
| US3690313A (en) * | 1970-10-09 | 1972-09-12 | Mennen Greatbatch Electronics | Electrically isolated signal path means for a physiological monitor |
| US3757778A (en) * | 1971-01-13 | 1973-09-11 | Comprehensive Health Testing L | Electrocardiograph lead distribution and contact testing apparatus |
| JPS5339558B2 (en]) * | 1972-08-10 | 1978-10-21 | ||
| DE2429954B2 (de) * | 1974-06-21 | 1980-03-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schaltungsanordnung zur Verarbeitung physiologischer Meßsignale |
-
1977
- 1977-06-10 US US05/805,552 patent/US4164215A/en not_active Expired - Lifetime
-
1978
- 1978-04-27 CA CA302,126A patent/CA1123947A/en not_active Expired
- 1978-06-07 JP JP1978077858U patent/JPS6115843Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6115843Y2 (en]) | 1986-05-16 |
| US4164215A (en) | 1979-08-14 |
| JPS543892U (en]) | 1979-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |