US1647474A - Variable pathway - Google Patents
Variable pathway Download PDFInfo
- Publication number
- US1647474A US1647474A US670712A US67071223A US1647474A US 1647474 A US1647474 A US 1647474A US 670712 A US670712 A US 670712A US 67071223 A US67071223 A US 67071223A US 1647474 A US1647474 A US 1647474A
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- pathway
- pliable
- galvanic
- variable
- deposit
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H5/00—One-port networks comprising only passive electrical elements as network components
- H03H5/02—One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
Definitions
- This invention relates to means for transmission, reception, and control of electrical impulses or activities or other forms of wave motions and has particular reference to means constituting what I purposely designate as pathways, along or across which the impulses may be conveyed, transmitted, or regulated, and distinguished from the more restricted term circuits as applied to metallic or other analogous conductors.
- Another object of the invention is to provide a system of pathways made variable for the control of electrical impulses or the like, the same embodying one or more relatively fiat pliable bodies having formed, preferably by a galvanic deposit, thereon any suitable design, size, or construction of metallic elements adapted for various purposes according to the specific design or arrangement of the mechanism, so that one part of the structure which in normal position may lie in the same plane as another part, may, when the structure is distorted or manipulated, be brought into superimposed position in relation to the other part, or occupy either a plane parallel thereto .or a plane at a different angle thereto, or may assume any form or desired position relative to said other part.
- this invention offers new and useful ideas of means made effective by the application of galvanic action to deposit metal upon a pliable insulating material, movement of which ma-- terial moves the metal parts and varies the units.
- Another object of the invention is to provide pathways made up of variable resistance, capacity, inductance and impedance by means of depositing thin layers of metal, such as copper or silver by galvanic action upon a thin sheet of pliable material such as gutta percha, thus having the metal take the form of the pliable material.
- metal such as copper or silver
- pliable material such as gutta percha
- the metal thereupon will be bent or moved with the sheet.
- the metal when deposited in thin lines concentrically forms a coil, so also if deposited in masses or in parallel lines comparatively broad, parts of a condenser will be formed. Now by bending a coil the field about it is distorted and made variable; likewise with the condenser when the masses are brought nearer to each other the capacity is changed and so with all parts in combination.
- Fig. 2 is an edge view of the same in partial or superimposed position, the bro-ken lines indicating a variation in shape of one half of the carrier or body.
- Fig. 3 is a plan view of a further variation of the device.
- Fig. 4 is an end view of the mechanism of Fig. 3 as rolled into a loose spiral or spiral cylinder.
- 10 indicates a sheet of pliable material such as gutta percha, waxed paper, or other analogous material commonly regarded as insulation.
- This body is shown as being composed of two substantially equal rectangular parts connected by a relatively narrow neck portion 11, whereby one part may be folded or bent so as to be superimposed upon or above the other as in Fig. 2 or either part may be given a movement in its own plane in a direction approximately parallel to the other part for the variation of the effect of the electrical impulse being manipulated.
- either part may be distorted into curved, spiral, or cylindrical form suggested in broken lines in Fig. 2, for the purpose of variations-of prac tical effect. It is obvious that various mechanical means may be provided for mounting, supporting, and manipulating these flexible bodies, but for the purpose of this specification it is deemed unnecessary to show such mechanism.
- Each of the parts of the body 10 is provided with a slender metallic member 12 indicated as a spiral line of copper deposited thereon by galvanic action.
- a slender metallic member 12 indicated as a spiral line of copper deposited thereon by galvanic action.
- 1 form a pattern on the flexible sheet or support by any well known means such as the placing thereon of lead, graphite, solution of copper, or any other material of a conductive property which constitutes the base or cathode during the galvanic action while in the galvanic bath. It is impossible by any other means to deposit by the galvano process a conductive metal of either high or low or any other resistivity upon an insulating or I1011-CO11 ductive material.
- the two coils 12 are indicated as of right and left turn and so designed that one may be superimposed directly upon the other or in close proximity to each other when one body is folded or bent over the other.
- the outer ends of the coils may be connected in any suitable manner to other parts of a circuit system in a well known manner, and the inner ends of the coils may be connected by a line of similar deposit 13, or otherwise, ex tending along the opposite side of the body.
- These deposits in Fig. 2 are exaggerated in thickness but will be understood in practice as being of almost negligible thickness.
- Fig. 3 coils 12 are shown, and as a variation from the illustration in the first figure they are shown as of the same character and connected on the same side through a connector 13. It will be appreciated that the capacity and inductance of a circuit connected through the pathways illustrated herein may be varied in many ways, to efiect the increase or decrease thereof according to the nearness or relative positions of the parts of the pathway elements.
- a deposit element which may be thought of as a condenser having spaced and substantially parallel correspond ing arms 15 and 16, the capacity or inductance of the various parts of which may be varied by the flexing of the body upon which these features are placed or deposited or by the superimposition of the condenser over or upon one or the other or both of the coil features of the same embodiment.
- One part of the condenser is shown connected through a line 17 to one of the coils, such line being on the opposite side of the body.
- the deposit elements may be in the nature of disks or films of sheet metal or they may partake of many other specific designs according to the nature of the mechanism or use to which they may be put.
- the formation of the pathway by galvanic deposit renders it feasible and practicable for the cross section or carrying capacity of the metal part to be varied readily during the construction, a feature that could not be performed by the use of ordinary conducting wires or the like.
- This formation at 12 may be regarded, for claiming purposes, as a field piece.
- galvanic deposition renders the metals of a high degree of purity and makes it feasible for the same to be more readily formed or deposited in lines or layers of different sectional areas or shapes, and composed of metals such as nickel, copper, silver, or gold, either singly or combined in layers or sections.
- a body of pliable insulating material having formed thereon. by galvanic deposit a pathway comprising three distinct but correlated. masses of metal, one of which is a spiral constituting an inductance, another is arranged in strips spaced relatively to one another and forming condenser, while the third is a field piece composed of masses or formations of metal of different design or shape from those first mentioned, the whole constituting an electric pathway whose function is variable due to the flexibility of the body of insulation and the character of the deposit thereon.
- a method of constructing electrical apparatus which consists in marking out circuitous paths upon a supporting surface, placing a conductive material over the paths and electroplating the conductive material with a metal having low resistance to radio frequency currents.
- variable electrical apparatus which consists in suitably preparing a pliable insulating body of sheet material, subjecting said. body to a galvanic bath, and depositing on said body a slender electrical pathway whose electrical units are rendered variable because of the pliability of the insulating body.
- variable electrical apparatus which consists in suitably preparing a pliable body of sheet insulating material, subjecting said body to a galvanic bath, depositing on said body a slender variable electrical pathway as a result of the preparation aforesaid and the action of the galvanic bath, and removing the body of sheet material thus formed from said bath.
- variable electrical apparatus which comprises the subjecting of a pliable body having parts relatively movable to one another into a galvanic bath, forming on said body of an electrical pathway as a result of galvanic action while in said bath, said pathway having portions of variable cross sectional dimensions, and removing the pliable body from the bath.
- a spiral variable electrical conductor comprising, in combination, a pliable body of insulating material, and an electrical pathway formed spirally on said body by galvanic action, the electrical units of the spiral pathway being variable as a result of the pliability of said body.
- the herein described electrical device comprising a support of non-conductive material and a galvanic deposit on the surface of said support of a body of conductive material, difl'ereut portions of which deposited body are of different cross sectional areas whereby variations in inductance and capacity of the body are obtainable at different points of the body.
- the herein described method of manu facturing an electrical apparatus which consists in suitably preparing a supporting body of insulating material, subjecting said body to a galvanic bath, depositing on said body an electrical pathway of conductive mate-- rial, and so controlling the depositing action that said pathway will be of difi'erent cross sectional areas at certain points than it is at others.
- the herein described method of manu facturing an electrical apparatus which consists in suitably preparing a supporting body of insulating material, subjecting said body to a galvanic bath, depositing on said body an electrical pathway of conductive mate rial, and controlling the depositing action so that the pathway will be wider at some points than at others.
Description
Nov. 1, 1927. 1,647,474
F. W. SEYMOUR VAR-IABLE PATHWAY Filed Oct. 25. 1925 Timrl.
L%%/ INVENTOR Lav-a ya Patented Nov. 1, 1927.
PATENT OFFICE.
FREDERICK W. SEYMOUR, OF FLUSHING, NEW YORK.
VARIABLE PATHWAY.
Application filed October 25, 1923.
This invention relates to means for transmission, reception, and control of electrical impulses or activities or other forms of wave motions and has particular reference to means constituting what I purposely designate as pathways, along or across which the impulses may be conveyed, transmitted, or regulated, and distinguished from the more restricted term circuits as applied to metallic or other analogous conductors.
Among the objects of the invention is to provide a pathway system for electrical impulses which involves the use of a flexible,
relatively thin, pliable body in the nature of insulation and capable of being made to assume various forms or with the different parts thereof in differently related positions, and for the deposition on the surface of said body, or otherwise extended along the same, of a line or strip of metallic or other suitable material, also of thin and pliable physical nature so that it may partake of the same variation in form or position as the body upon which it is placed or formed.
Another object of the invention is to provide a system of pathways made variable for the control of electrical impulses or the like, the same embodying one or more relatively fiat pliable bodies having formed, preferably by a galvanic deposit, thereon any suitable design, size, or construction of metallic elements adapted for various purposes according to the specific design or arrangement of the mechanism, so that one part of the structure which in normal position may lie in the same plane as another part, may, when the structure is distorted or manipulated, be brought into superimposed position in relation to the other part, or occupy either a plane parallel thereto .or a plane at a different angle thereto, or may assume any form or desired position relative to said other part.
In the radio reception and transmission of recent times it is the practice of operators to use coils and masses of metal alone or in combination to control the messages and music broadcasted and received, and many of these instruments thus formed are cumbersome and bulky and otherwise poorly designed, all of which conditions depend largely upon control of the inductance or capacity and combinations of the inductance and capacities. In order to afford an improved method of obtaining and varying Serial No. 670,712.
these units and their combinations this invention offers new and useful ideas of means made effective by the application of galvanic action to deposit metal upon a pliable insulating material, movement of which ma-- terial moves the metal parts and varies the units.
Another object of the invention is to provide pathways made up of variable resistance, capacity, inductance and impedance by means of depositing thin layers of metal, such as copper or silver by galvanic action upon a thin sheet of pliable material such as gutta percha, thus having the metal take the form of the pliable material. As the gutta percha sheets are pliable and easily bendable the metal thereupon will be bent or moved with the sheet. As the metal when deposited in thin lines concentrically forms a coil, so also if deposited in masses or in parallel lines comparatively broad, parts of a condenser will be formed. Now by bending a coil the field about it is distorted and made variable; likewise with the condenser when the masses are brought nearer to each other the capacity is changed and so with all parts in combination.
With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed and while the invention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practical embodiment thereofreference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which- Figure 1 is a plan view of one embodiment of the invention.
Fig. 2 is an edge view of the same in partial or superimposed position, the bro-ken lines indicating a variation in shape of one half of the carrier or body.
Fig. 3 is a plan view of a further variation of the device.
Fig. 4 is an end view of the mechanism of Fig. 3 as rolled into a loose spiral or spiral cylinder.
Referring now more specifically to the drawings, 10 indicates a sheet of pliable material such as gutta percha, waxed paper, or other analogous material commonly regarded as insulation. This body is shown as being composed of two substantially equal rectangular parts connected by a relatively narrow neck portion 11, whereby one part may be folded or bent so as to be superimposed upon or above the other as in Fig. 2 or either part may be given a movement in its own plane in a direction approximately parallel to the other part for the variation of the effect of the electrical impulse being manipulated. Also since the body is pliable either part may be distorted into curved, spiral, or cylindrical form suggested in broken lines in Fig. 2, for the purpose of variations-of prac tical effect. It is obvious that various mechanical means may be provided for mounting, supporting, and manipulating these flexible bodies, but for the purpose of this specification it is deemed unnecessary to show such mechanism.
Each of the parts of the body 10 is provided with a slender metallic member 12 indicated as a spiral line of copper deposited thereon by galvanic action. In accordance with the usual practice in the galvano deposit of metals on pliable bodies or bodies of a non-conductive property, 1 form a pattern on the flexible sheet or support by any well known means such as the placing thereon of lead, graphite, solution of copper, or any other material of a conductive property which constitutes the base or cathode during the galvanic action while in the galvanic bath. It is impossible by any other means to deposit by the galvano process a conductive metal of either high or low or any other resistivity upon an insulating or I1011-CO11 ductive material. In this figure the two coils 12 are indicated as of right and left turn and so designed that one may be superimposed directly upon the other or in close proximity to each other when one body is folded or bent over the other. The outer ends of the coils may be connected in any suitable manner to other parts of a circuit system in a well known manner, and the inner ends of the coils may be connected by a line of similar deposit 13, or otherwise, ex tending along the opposite side of the body. These deposits in Fig. 2 are exaggerated in thickness but will be understood in practice as being of almost negligible thickness. In Fig. 3 coils 12 are shown, and as a variation from the illustration in the first figure they are shown as of the same character and connected on the same side through a connector 13. It will be appreciated that the capacity and inductance of a circuit connected through the pathways illustrated herein may be varied in many ways, to efiect the increase or decrease thereof according to the nearness or relative positions of the parts of the pathway elements.
At 14 I indicate a deposit element which may be thought of as a condenser having spaced and substantially parallel correspond ing arms 15 and 16, the capacity or inductance of the various parts of which may be varied by the flexing of the body upon which these features are placed or deposited or by the superimposition of the condenser over or upon one or the other or both of the coil features of the same embodiment. One part of the condenser is shown connected through a line 17 to one of the coils, such line being on the opposite side of the body.
It will be understood that the illustrations are but a few of the many variations or forms of the generic idea hereinafter claimed as new. For instance, the deposit elements may be in the nature of disks or films of sheet metal or they may partake of many other specific designs according to the nature of the mechanism or use to which they may be put. As indicated for example at 12 in Fig. 3 the formation of the pathway by galvanic deposit renders it feasible and practicable for the cross section or carrying capacity of the metal part to be varied readily during the construction, a feature that could not be performed by the use of ordinary conducting wires or the like. This formation at 12 may be regarded, for claiming purposes, as a field piece. The nature of galvanic deposition renders the metals of a high degree of purity and makes it feasible for the same to be more readily formed or deposited in lines or layers of different sectional areas or shapes, and composed of metals such as nickel, copper, silver, or gold, either singly or combined in layers or sections.
I claim:
1. In combination, a sheet of pliable insulating material, a deposit by galvanic ac tion of metal in concentric convolutions on said sheet forming an inductance, a similar deposit of metal in strips forming condenser, and also on said sheet, and a similar deposit of metal on said sheet forming a field piece, all three deposits constituting a correlated flexible and therefore variable electrical pathway.
2. A construction as set forth in claim 1 in which the field piece deposit is interposed between the inductance and the condenser and at the same side of the flexible sheet of insulation.
8. In combination, a body of pliable insulating material having formed thereon. by galvanic deposit a pathway comprising three distinct but correlated. masses of metal, one of which is a spiral constituting an inductance, another is arranged in strips spaced relatively to one another and forming condenser, while the third is a field piece composed of masses or formations of metal of different design or shape from those first mentioned, the whole constituting an electric pathway whose function is variable due to the flexibility of the body of insulation and the character of the deposit thereon.
a. A method of constructing electrical apparatus which consists in marking out circuitous paths upon a supporting surface, placing a conductive material over the paths and electroplating the conductive material with a metal having low resistance to radio frequency currents.
The method of manufacturing variable electrical apparatus which consists in suitably preparing a pliable insulating body of sheet material, subjecting said. body to a galvanic bath, and depositing on said body a slender electrical pathway whose electrical units are rendered variable because of the pliability of the insulating body.
6. The method of manufacturing variable electrical apparatus which consists in suitably preparing a pliable body of sheet insulating material, subjecting said body to a galvanic bath, depositing on said body a slender variable electrical pathway as a result of the preparation aforesaid and the action of the galvanic bath, and removing the body of sheet material thus formed from said bath.
7. The method of manufacturing variable electrical apparatus which comprises the subjecting of a pliable body having parts relatively movable to one another into a galvanic bath, forming on said body of an electrical pathway as a result of galvanic action while in said bath, said pathway having portions of variable cross sectional dimensions, and removing the pliable body from the bath.
8. A spiral variable electrical conductor comprising, in combination, a pliable body of insulating material, and an electrical pathway formed spirally on said body by galvanic action, the electrical units of the spiral pathway being variable as a result of the pliability of said body.
9. A construction as set forth in claim 12 in which different portions of the spiral pathway are of different cross sectional diinension for the purpose of increasing the variability of the device as an electrical apparatus.
10. The herein described electrical device comprising a support of non-conductive material and a galvanic deposit on the surface of said support of a body of conductive material, difl'ereut portions of which deposited body are of different cross sectional areas whereby variations in inductance and capacity of the body are obtainable at different points of the body.
11. The herein described method of manu facturing an electrical apparatus which consists in suitably preparing a supporting body of insulating material, subjecting said body to a galvanic bath, depositing on said body an electrical pathway of conductive mate-- rial, and so controlling the depositing action that said pathway will be of difi'erent cross sectional areas at certain points than it is at others.
12. The herein described method of manu facturing an electrical apparatus which consists in suitably preparing a supporting body of insulating material, subjecting said body to a galvanic bath, depositing on said body an electrical pathway of conductive mate rial, and controlling the depositing action so that the pathway will be wider at some points than at others.
In testimony whereof I affix my signature.
FREDERICK W. SEYMOUR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US670712A US1647474A (en) | 1923-10-25 | 1923-10-25 | Variable pathway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US670712A US1647474A (en) | 1923-10-25 | 1923-10-25 | Variable pathway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1647474A true US1647474A (en) | 1927-11-01 |
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|---|---|---|---|
| US670712A Expired - Lifetime US1647474A (en) | 1923-10-25 | 1923-10-25 | Variable pathway |
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| US20080309431A1 (en) * | 2007-06-15 | 2008-12-18 | City University Of Hong Kong | Planar emi filter |
| US20090146755A1 (en) * | 2007-06-15 | 2009-06-11 | City University Of Hong Kong | Planar emi filter |
| US20140285305A1 (en) * | 2013-03-25 | 2014-09-25 | Samsung Electro-Mechanics Co., Ltd. | Inductor and method for manufacturing the same |
-
1923
- 1923-10-25 US US670712A patent/US1647474A/en not_active Expired - Lifetime
Cited By (73)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2773239A (en) * | 1956-12-04 | Electrical indicating instruments | ||
| US2874360A (en) * | 1959-02-17 | Eisler | ||
| US2433384A (en) * | 1942-11-05 | 1947-12-30 | Int Standard Electric Corp | Method of manufacturing unitary multiple connections |
| US2441960A (en) * | 1943-02-02 | 1948-05-25 | Eisler Paul | Manufacture of electric circuit components |
| US2587568A (en) * | 1943-02-02 | 1952-02-26 | Hermoplast Ltd | Manufacture of electric circuit components |
| US2703854A (en) * | 1943-02-02 | 1955-03-08 | Hermoplast Ltd | Electrical coil |
| US2474988A (en) * | 1943-08-30 | 1949-07-05 | Sargrove John Adolph | Method of manufacturing electrical network circuits |
| US2497027A (en) * | 1944-08-26 | 1950-02-07 | Glaser Marcus | Method for testing radio receivers to determine the number of turns of the loop antenna |
| US2481951A (en) * | 1945-01-29 | 1949-09-13 | Sabee | Method of making tubular plastic articles |
| US2542726A (en) * | 1945-06-30 | 1951-02-20 | Herbert W Sullivan | Method of forming inductor coils |
| US2611040A (en) * | 1947-06-23 | 1952-09-16 | Brunetti Cledo | Nonplanar printed circuits and structural unit |
| US2547022A (en) * | 1947-06-25 | 1951-04-03 | Int Standard Electric Corp | Electrical connections and circuits and their manufacture |
| US2601338A (en) * | 1947-10-31 | 1952-06-24 | Steatite Res Corp | Varialbe parallel resonant circuit |
| US2637766A (en) * | 1948-07-15 | 1953-05-05 | Hunt Capacitors Ltd A | Metallized paper capacitor |
| US2649513A (en) * | 1949-03-08 | 1953-08-18 | Ibm | Distributor and method for making the same |
| US2623966A (en) * | 1949-04-01 | 1952-12-30 | John Nathanson | Selective audio relay |
| US2828454A (en) * | 1950-02-11 | 1958-03-25 | Globe Union Inc | Ceramic capacitor |
| US2674729A (en) * | 1950-04-13 | 1954-04-06 | Edward G Martin | Measuring apparatus |
| US2745170A (en) * | 1950-06-30 | 1956-05-15 | Chrysler Corp | Process for manufacturing electrical coils |
| US2684522A (en) * | 1950-07-24 | 1954-07-27 | Globe Union Inc | Thin high dielectric constant sheets |
| US2677769A (en) * | 1951-03-09 | 1954-05-04 | Ind Dev Engineering Associates | High-frequency circuit chassis |
| US2740097A (en) * | 1951-04-19 | 1956-03-27 | Hughes Aircraft Co | Electrical hinge connector for circuit boards |
| DE972393C (en) * | 1951-09-28 | 1959-07-16 | Technograph Printed Circuits L | Electric device |
| US2676392A (en) * | 1951-12-22 | 1954-04-27 | Bell Telephone Labor Inc | Method of making filamentary electromagnetic transducers |
| US2886880A (en) * | 1952-05-26 | 1959-05-19 | Hermoplast Ltd | Method of producing electric circuit components |
| US2701875A (en) * | 1952-06-16 | 1955-02-08 | Otto J Baltzer | Resistance type of phase shifter |
| US2884571A (en) * | 1952-07-12 | 1959-04-28 | Sylvania Electric Prod | Printed circuit |
| US2783193A (en) * | 1952-09-17 | 1957-02-26 | Motorola Inc | Electroplating method |
| US2688119A (en) * | 1953-04-20 | 1954-08-31 | Gabriel Co | Printed circuit network system |
| US2798897A (en) * | 1953-05-11 | 1957-07-09 | Du Mont Allen B Lab Inc | Shield for printed wiring |
| US2709211A (en) * | 1953-05-27 | 1955-05-24 | Blue Ridge Glass Corp | Electrical connectors for resistance elements on glass plates |
| US2831135A (en) * | 1953-07-10 | 1958-04-15 | Visseaux S A J | Electromagnetic deflection means |
| US2831136A (en) * | 1953-09-24 | 1958-04-15 | Visseaux S A J | Electromagnetic deflecting means |
| US2820871A (en) * | 1953-09-30 | 1958-01-21 | Paul H Smith | Electronic computer contact and process of making same |
| US2876392A (en) * | 1953-12-09 | 1959-03-03 | Sanders Associates Inc | Electrical components |
| US2834723A (en) * | 1953-12-31 | 1958-05-13 | Northern Engraving & Mfg Co | Method of electroplating printed circuits |
| US3011247A (en) * | 1954-01-15 | 1961-12-05 | Visseaux S A J | Method of manufacturing printed electrical windings |
| US2936516A (en) * | 1954-05-17 | 1960-05-17 | John A Adair | Method of making a dielectric core and resistor |
| US2866141A (en) * | 1954-06-23 | 1958-12-23 | Franklin Institute | Pressure sensing devices |
| US2795700A (en) * | 1954-07-06 | 1957-06-11 | Gen Instrument Corp | High frequency adjusting system |
| US2851765A (en) * | 1954-07-29 | 1958-09-16 | Hanlet Jacques Marie Noel | Electrical windings |
| US2873374A (en) * | 1955-05-27 | 1959-02-10 | Standard Coil Prod Co Inc | Electrical fine tuning device |
| US2847589A (en) * | 1955-06-09 | 1958-08-12 | Cons Electronics Ind | Electric rotating machinery |
| US2995827A (en) * | 1955-09-13 | 1961-08-15 | Hartley Robertson Ltd | Automatic steering apparatus for vessels, vehicles and other guided bodies |
| DE1199845B (en) * | 1956-06-26 | 1965-09-02 | Dr Phil Habil Oskar Vierling | Electrical device housing |
| US2911605A (en) * | 1956-10-02 | 1959-11-03 | Monroe Calculating Machine | Printed circuitry |
| US2913645A (en) * | 1956-12-24 | 1959-11-17 | Rca Corp | Variable capacitor |
| US2967238A (en) * | 1957-04-10 | 1961-01-03 | Standard Coil Prod Co Inc | Tuner for television receivers |
| US3069636A (en) * | 1960-05-04 | 1962-12-18 | Sylvania Electric Prod | Modular tuned circuits |
| US3234631A (en) * | 1960-06-15 | 1966-02-15 | Hazeltine Research Inc | Methods of manufacturing magnetic deflection coils and yokes |
| US3027435A (en) * | 1960-10-14 | 1962-03-27 | Jr Bernard E Shlesinger | Multiple contact switch |
| DE1241913B (en) * | 1961-01-13 | 1967-06-08 | Thomson Houston Comp Francaise | Arrangement for fine tuning of the inductivity of an induction coil with printed turns |
| US3383693A (en) * | 1965-08-20 | 1968-05-14 | Ronald S. Kahn | Foldable planar base antenna structures |
| DE1262381B (en) * | 1965-11-11 | 1968-03-07 | R & E Hopt K G | Receiving device for high frequencies |
| US3466586A (en) * | 1966-02-26 | 1969-09-09 | Emi Ltd | Scanning coils |
| US3513391A (en) * | 1966-08-18 | 1970-05-19 | Siemens Ag | Vibrating member for light ray oscillographs |
| US3484731A (en) * | 1967-10-05 | 1969-12-16 | Edward L Rich | Printed circuit inductor |
| US3465274A (en) * | 1967-10-23 | 1969-09-02 | American Mach & Foundry | Search coil arrangement |
| US3699452A (en) * | 1969-04-18 | 1972-10-17 | Hans Kolbe & Co Kg | Active antenna arrangement for a plurality of frequency ranges |
| US3718874A (en) * | 1970-12-29 | 1973-02-27 | Sossen E | Etched inductance bandpass filter |
| US4075591A (en) * | 1976-05-14 | 1978-02-21 | Blaupunkt-Werke Gmbh | Printed circuit coils |
| US4114428A (en) * | 1976-09-24 | 1978-09-19 | Popenoe Charles H | Radio-frequency tuned-circuit microdisplacement transducer |
| USRE30183E (en) * | 1976-09-24 | 1980-01-08 | Radio-frequency tuned-circuit microdisplacement transducer | |
| US4517540A (en) * | 1977-05-13 | 1985-05-14 | Mcdougal John A | Spiral windings |
| US5550361A (en) * | 1993-08-03 | 1996-08-27 | Amphenol-Tuchel Electronics Gmbh | Card reader contacts and non-contact coils on a printed circuit board |
| USRE35992E (en) * | 1993-08-03 | 1998-12-15 | Amphenol-Tuchel Electronics Gmbh | Card reader contacts and non-contact coils on a printed circuit board |
| US5844451A (en) * | 1994-02-25 | 1998-12-01 | Murphy; Michael T. | Circuit element having at least two physically separated coil-layers |
| US6549176B2 (en) | 2001-08-15 | 2003-04-15 | Moore North America, Inc. | RFID tag having integral electrical bridge and method of assembling the same |
| US20080309431A1 (en) * | 2007-06-15 | 2008-12-18 | City University Of Hong Kong | Planar emi filter |
| US20090146755A1 (en) * | 2007-06-15 | 2009-06-11 | City University Of Hong Kong | Planar emi filter |
| US8120445B2 (en) | 2007-06-15 | 2012-02-21 | City University Of Hong Kong | Planar EMI filter comprising coreless spiral planar windings |
| US20140285305A1 (en) * | 2013-03-25 | 2014-09-25 | Samsung Electro-Mechanics Co., Ltd. | Inductor and method for manufacturing the same |
| US9520223B2 (en) * | 2013-03-25 | 2016-12-13 | Samsung Electro-Mechanics Co., Ltd. | Inductor and method for manufacturing the same |
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