GB2234135A - Improved electrode and method of production thereof - Google Patents
Improved electrode and method of production thereof Download PDFInfo
- Publication number
- GB2234135A GB2234135A GB8916663A GB8916663A GB2234135A GB 2234135 A GB2234135 A GB 2234135A GB 8916663 A GB8916663 A GB 8916663A GB 8916663 A GB8916663 A GB 8916663A GB 2234135 A GB2234135 A GB 2234135A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- protuberances
- sheet
- projections
- sonar equipment
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000000463 material Substances 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- -1 for example Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000007779 soft material Substances 0.000 claims description 2
- 238000005530 etching Methods 0.000 description 3
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 229910000792 Monel Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
- B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
An electrode for use in sonar equipment comprising a sheet of material (5) having a plurality of apertures or perforations formed therein, characterised by the feature that a plurality of projections or protuberances (6) are provided in said material. Also according to the invention a method of producing an improved electrode for use in sonar equipment comprises making an electrode from a sheet of material by providing a plurality of holes therein in known manner, and forming a plurality of projections or protuberances over the surface of the electrode by stamping or pressing. <IMAGE>
Description
IMPROVED ELECTRODE AND METHOD OF PRODUCTION THEREOF
The present invention relates to an improved electrode and method of production thereof and is particularly applicable to mesh-like electrodes, such as used in sonar transmitting/receiving apparatus, where a plurality of said electrodes are held together in abutting juxtaposition.
Hitherto electrodes for use in sonar equipment sometimes referred to as shim connectors have comprised stacks of sheets of Monel metal gauze which are held together although, more recently, such have been replaced by thin flat and smooth sheets of a suitable metal material, such as a copper alloy, which have been etched to produce a one piece lattice or mesh-like structure. Such grid electrodes are very thin and have a generally smooth surface.
According to the present invention an improved electrode for use in sonar equipment comprises a sheet of material having a plurality of apertures or perforations formed therein, characterised by the feature that a plurality of projections or protuberances are provided in said material.
It has been found that an electrode with said protuberances formed over the surface thereof provides improved electrical contact and a particularly improved performance of sonar equipment for example, the extending from one surface although may be provided extending from both surfaces.
It is believed that the protuberances provide an improved contact between the sheets and this improved efficiency of the equipment in which it is used.
The projections or protuberances in the thin sheet or foil material may be of any suitable shape, size disposition and density
The sheet or foil material is thin and preferably of a copper alloy.
Once an electrode for use in sonar equipment comprising a sheet of apertured material, similar to a mesh or gauze, has been produced, such as preferably by an etching process, it is then pressed by a member having a plurality of projections thereon so as to produce the requisite projections or protuberances in the sheet of material from. which the electrode has been produced. The stamping or pressing member is preferably of tool steel etched to leave a plurality of projections preferably of rounded or mushroom like shape.
The sheet is preferably supported on a relatively soft material such as a plastics material backing sheet e.g. polypropylene , which enables the deformation to take place.
Thus, also according to the present invention a method of producing an improved electrode for use in sonar equipment comprises making an electrode from a sheet of material by providing a plurality of holes therein, as is known, and is characterised by forming a plurality of projections or protuberances over the surface of the electrode.
The projections or protuberances will preferably be formed by deforming the material of the electrode, preferably by a stamping or pressing operation using a suitable formed pressing or stamping member having a plurality of small projections extending therefrom.
The invention will be described further, by way of example, with reference to the accompanying drawings, in which:
Fig. 1 is a plan view of an electrode formed according to the invention;
Fig. 1A is an enlarged fragmentary schematic elevation illustrating the protuberances in the electrode;
Fig. 2 is an enlarged fragmentary schematic sectional view of a pressing member for forming a plurality of protuberances in a previously formed flat-sheet electrode.
An electrode for use in sonar equipment is shown in Fig. 1 and comprises a one-piece; thin foil of copper alloy material of generally rectangular outline with a connector portion 2 extending from a rectangular unperforated frame portion 3. The major portion of the electrode has a plurality of small apertures formed in offset rows to produce a lattice like appearance. The electrode is formed by a known etching process. A plurality of protuberances 4 are formed by pressing the material of the electrode with a suitable pressing tool 5 (Fig. 2) of tool steel having a plurality of round ended projections 6 formed over the surface thereof by etching. The protuberances cannot be clearly shown in Fig. 1.
Claims (11)
1. An electrode for use in sonar equipment comprising a sheet of material having a plurality of apertures or perforations formed therein, characterised by the feature that a plurality of projections or protuberances are provided in said material.
2. An electrode as claimed in claim 1, in which said protuberances formed over the surface thereof and such as to provide improved electrical contact.
3. An electrode as claimed in claim 1 or 2, in which the protuberances extend from one or both surfaces.
4. An electrode as claimed in any of claims 1 to 3, in which the sheet is a thin sheet or a thin foil material and the protuberances are of any suitable shape, size disposition and density.
5. An electrode as claimed in claim 1 or 4, in which the material is a copper alloy.
6. A method of producing an improved electrode for use in sonar equipment comprises making an electrode from a sheet of material by providing a plurality of holes therein in known manner, and from a plurality of projections or protuberances over the surface of the electrode.
7. A method as claimed in claim 6, in which projections or protuberances are formed by deforming the material of the electrode.
8. A method as claimed in claim 7, in which the deformation is by a stamping or pressing operation using a suitable formed pressing or stamping member having a plurality of small projections extending therefrom.
9. A method as claimed in claim 7 or 8, in which the sheet is supported on a relatively soft material, for example, polypropylene which enables the deformation to take place.
10. An electrode substantially as herein described with reference to the accompanying drawings.
11. A plurality of electrodes as claimed in any of claims 1 to 4 arranged in a stack in abutting juxtaposition and secured together for use in sonar equipment.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8916663A GB2234135A (en) | 1989-07-21 | 1989-07-21 | Improved electrode and method of production thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8916663A GB2234135A (en) | 1989-07-21 | 1989-07-21 | Improved electrode and method of production thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8916663D0 GB8916663D0 (en) | 1989-09-06 |
GB2234135A true GB2234135A (en) | 1991-01-23 |
Family
ID=10660376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8916663A Withdrawn GB2234135A (en) | 1989-07-21 | 1989-07-21 | Improved electrode and method of production thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2234135A (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4046974A (en) * | 1976-10-01 | 1977-09-06 | Bell Telephone Laboratories, Incorporated | Electroacoustic transducer with springs forming electrical interconnections as a result of assembly |
US4160881A (en) * | 1977-12-28 | 1979-07-10 | Microtel B.V. | Electret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate with screen junctions overlaying the apertures |
EP0136270A1 (en) * | 1983-08-19 | 1985-04-03 | Telefonaktiebolaget L M Ericsson | Electret microphone |
GB2157916A (en) * | 1984-04-10 | 1985-10-30 | Microtel Bv | An electric transducer and a method for manufacturing a transducer assembly |
GB2162639A (en) * | 1984-08-03 | 1986-02-05 | Raytheon Co | Polymer hydrophone array with multilayer printed circuit wiring |
-
1989
- 1989-07-21 GB GB8916663A patent/GB2234135A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4046974A (en) * | 1976-10-01 | 1977-09-06 | Bell Telephone Laboratories, Incorporated | Electroacoustic transducer with springs forming electrical interconnections as a result of assembly |
US4160881A (en) * | 1977-12-28 | 1979-07-10 | Microtel B.V. | Electret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate with screen junctions overlaying the apertures |
EP0136270A1 (en) * | 1983-08-19 | 1985-04-03 | Telefonaktiebolaget L M Ericsson | Electret microphone |
GB2157916A (en) * | 1984-04-10 | 1985-10-30 | Microtel Bv | An electric transducer and a method for manufacturing a transducer assembly |
GB2162639A (en) * | 1984-08-03 | 1986-02-05 | Raytheon Co | Polymer hydrophone array with multilayer printed circuit wiring |
Also Published As
Publication number | Publication date |
---|---|
GB8916663D0 (en) | 1989-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0602609B1 (en) | Electrical connector having a supported bulge configuration | |
JPH04306867A (en) | Lead frame and manufacture thereof | |
US6532654B2 (en) | Method of forming an electrical connector | |
WO1999044815A1 (en) | Paper embossing system with a flexible counter and method of embossing | |
GB2234135A (en) | Improved electrode and method of production thereof | |
JP3155219B2 (en) | Battery electrode and method of manufacturing the same | |
US4382328A (en) | Method of making stationary electrodes for electrostatic transducers | |
US6051119A (en) | Plating structure for a pin grid array package | |
JP4038273B2 (en) | Manufacturing method of grinding plate | |
JPH1058056A (en) | Manufacture of metallic plate with a large number of holes in punch press | |
JP2009140711A (en) | Push-switch and sheet with movable contact | |
KR100653246B1 (en) | Grid manufacturing mold for lead-acid battery | |
JP2000301250A (en) | Forming device of sheet material | |
JP2001121221A (en) | Manufacturing method of blanking die and blanking die | |
EP1536520A1 (en) | Connector, method for manufacturing the same, and wiring board structure employing it | |
JP3056358B2 (en) | How to join metal contacts | |
JPH0785814B2 (en) | Grinding plate manufacturing method | |
JPH0439880A (en) | Manufacturing of terminal | |
US3330032A (en) | Method of producing electrical components | |
JPH02204006A (en) | Slit press mold and manufacture thereof | |
JPS642735A (en) | Punching of clad material | |
KR0123039B1 (en) | Forming method of wide part | |
JP4154494B2 (en) | Tube contact, method for manufacturing the same, and electric wire connecting device | |
JPS6148297A (en) | Manufacture of paper-making wire gauze for speaker | |
JPH06181063A (en) | Hydrogen storage alloy electrode |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |