US2467811A - Rectifier terminal device - Google Patents

Rectifier terminal device Download PDF

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Publication number
US2467811A
US2467811A US583930A US58393045A US2467811A US 2467811 A US2467811 A US 2467811A US 583930 A US583930 A US 583930A US 58393045 A US58393045 A US 58393045A US 2467811 A US2467811 A US 2467811A
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United States
Prior art keywords
rectifier
selenium
terminal
assembly
relation
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Expired - Lifetime
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US583930A
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Ralph T Cheeseman
Edgar A Harty
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General Electric Co
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General Electric Co
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
    • H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
    • H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01012—Magnesium [Mg]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01013—Aluminum [Al]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01029—Copper [Cu]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01—Chemical elements
    • H01L2924/01033—Arsenic [As]

Definitions

  • the present invention provides a mounting, or terminal assembly, for electric blocking layer or so-called metallic rectifiers, such, for example, as selenium or copper oxide rectifiers.
  • the terminal assembly provided by the present invention is particularly Well adapted to mechanically secure and provide terminal connections for small rectifier cells.
  • Selenium rectifier cells as described, for example, in Hewlett U. S. Patent 2,334,554, patented November 16, 1943, comprise a metal base, constituting one electrode, on which is applied a .layer of selenium.
  • the surface of the selenium selenium type or other small metallic type, should be so mounted between terminals of electrical apparatus of which they form a part, that accidental displacement of the cells is substantially precluded.
  • Our present invention provides an assembly for securing one or more rectifying cells together with electric terminals therefor and provides 'means for so looking the cooperating parts in assembled relation as to practically preclude displacement during service, even when the rectifying cells are very small.
  • FIG. 1 is a vertical section of the assembly
  • Fig. 2 is a plan view partly in section
  • Fig. 3 is a magnified vertical section of a rectifier cell
  • Fig. 4 is an exploded view of the entire assembly member
  • Fig. 5 is a vertical section
  • Fig. 6 is a top view of a modification.
  • the selenium cell shown in Fig. 3 on an enlarged scale comprises a disc-shaped conductive base I, which'may consist of aluminum, iron or other suitable metal. successively superimposed on the base I are layers of selenium 2 and a nonconductive material 3.
  • the latter may consist of paper impregnated with a resin, such as polystyrene.
  • the insulation 3 is provided with a central aperture, as indicated, through which the selenium film beneath it is exposed.
  • the selenium film may be prepared as described in Hewlett Patents 2,334,554 and 2,354,521.
  • a blocking layer on the selenium (not shown) may be produced by treatment with hydrogen peroxide as described in Hewlett Patent 2,334,622.
  • a counter-electrode 4 which may consist of an alloy of tin and cadmium is superimposed on the cell by spraying the liquid alloy over the entire top surface of the cell, thereby making electrical contact with the selenium film through the orifice.
  • the cell is formed by passage of current, as well understood.
  • FIG. 4 A single completed cell 5 and cooperating parts are illustrated in Fig. 4 and, as shown in connection with Fig. 5, a plurality of cells may be so mounted.
  • Current connection may be made to the base I by a flat spiral 6 formed by coiling the conductor 1 near its end.
  • Contact with the counter-electrode 4 is made by a similar fiat spiral 8 constituting part of a conductor 9.
  • any plate-like contact members having a configuration conforming with the surfaces of the rectifier cell may be provided.
  • the bent-over ends of the conductors I and 9 project outwardly substantially normal to the planes of the spirals 6, 8
  • the projecting spur I0 formed by the projecting end of the conductor I engages with a perforation l0 in the flat end wall of a clamp II.
  • the projecting spur I2 of the conductor 9 engages with a perforation in an insulating washer l3, which may consist of fiber or of a suitable phenolic resin composition.
  • the parts When thus assembled, the parts ar confined in fixed relation by bending the projecting prongs l4 of the clamp II over the assembly to bind the assembled parts, as indicated in Figs. 1 and 2.
  • the rectifier cell and contact spirals thus are anchored and restrained by the interlocking of adjacent members against lateral motion and disengagement from properly assembled position.
  • the insulating disk I3 prevents electrical contact of the spiral 8 with the clamp II which is in electrical contact with the spiral 6.
  • the assembled parts finally are embedded in a mass l5 of a wax, or a resin, or other suitable easily fusible, non-conductive material which further ensures against loosening and disengagement of the assembled parts.
  • the coating also protects the rectifier and contact from adverse climatic conditions which might produce corrosion.
  • a conductor 16 the end of which is coiled into the form of a flat spiral l'l, passes through an insulating disk- [8; another conductor 19, the end of which is coiled into a spiral 20 passes through an insulating disk 2
  • two selenium cells 22, 23 Between the fiat spirals are located two selenium cells 22, 23. A single selenium cell, or greater number of cells, may be similarly mounted.
  • two clamps 24, 25 are provided, each clamp having prongs 26 (the top set being shown in Fig. 6) which are bent over and engage with the insulating disks l8 and 2
  • the interior surface of the clamps 24, 25 may be provided with an insulating varnish coating as indicated in Fig. 5.
  • the modification of our improved assembly shown in Figs. and 6 also may be encased in wax or resin.
  • a rectifier assembly comprising a discshaped current rectifier cell having planar electrodes on opposite surfaces thereof, a pair of electric conducting terminal members engaging said electrodes and each comprising an elongated conductor having a planar spirally coiled portion and a central axial spur portion projecting substantially perpendicular to the plane of said spiral portion, said spirally coiled portions engaging said surface electrodes respectively in fiatwise relation, 9, disc-shaped insulator overlying one said coiled terminal portion and having a central aperture coupled to the associated axial spur portion in interlockin relation, and a metallic clamping member having a perforated end wall overlying the other said coiled terminal portion and coupled to the associated axial spur portion in interlocking relation, said clamping member having a plurality of prongs extending from said end wall and engaging said insulator in clamping relation, thereby to hold said rectifier and said terminals in assembled relation.
  • a rectifier assembly comprising a discshaped selenium rectifier cell having electric conducting surfaces on opposite sides thereof constituting electrodes, a pair of terminal members engaging said electrodes and each comprising an elongated electric conductor having a planar spirally coiled portion and a central axial spur portion, said spirally coiled portion engaging a major portion of the area of said surface electrodes respectively in flatwise relation, a discshaped insulator overlying one said coiled terminal portion and having a central aperture coupled to the axial spur portion of said one terminal in interlocking relation, a metallic clamping member having a perforated end wall overlying the other said coiled terminal portion and coupled to the axial spur portion of said other terminal in interlocking relation, said clamping member having a plurality of prongs extending from said end wall and bent over said insulator in clamping relation thereby to hold said rectifier assembly and said terminals in assembled relation, and a mass of fusible insulating material encasing said entire assembly and filling the interstices of said

Description

April 1949- R. T. CHEESEMAN in" AL ,4
RECTIFIER TERMINAL DEVICE Filed March 21, 1945 I nve htow s: Ralph F Cheeseman, Edgar A.Har-ty, 0
Their Attorney. Q
Patented Apr. 19, 1949 2,467,811 RECTIFIER TERMINAL DEVICE Ralph T. Cheeseman, Lynn, and Edgar A. Barty,
Marblehead, Mass., assignors to General Electriccompany, a corporation of New York Application March 21, 1945, Serial No. 533,930
2 Claims. (01. 175-366) The present invention provides a mounting, or terminal assembly, for electric blocking layer or so-called metallic rectifiers, such, for example, as selenium or copper oxide rectifiers. The terminal assembly provided by the present invention is particularly Well adapted to mechanically secure and provide terminal connections for small rectifier cells.
Selenium rectifier cells, as described, for example, in Hewlett U. S. Patent 2,334,554, patented November 16, 1943, comprise a metal base, constituting one electrode, on which is applied a .layer of selenium. The surface of the selenium selenium type or other small metallic type, should be so mounted between terminals of electrical apparatus of which they form a part, that accidental displacement of the cells is substantially precluded.
Our present invention provides an assembly for securing one or more rectifying cells together with electric terminals therefor and provides 'means for so looking the cooperating parts in assembled relation as to practically preclude displacement during service, even when the rectifying cells are very small.
A terminal assembly embodying our invention is shown in the accompanying drawing in which Fig. 1 is a vertical section of the assembly; Fig. 2 is a plan view partly in section; Fig. 3 is a magnified vertical section of a rectifier cell; Fig. 4 is an exploded view of the entire assembly member; Fig. 5 is a vertical section and Fig. 6 is a top view of a modification.
The selenium cell shown in Fig. 3 on an enlarged scale comprises a disc-shaped conductive base I, which'may consist of aluminum, iron or other suitable metal. successively superimposed on the base I are layers of selenium 2 and a nonconductive material 3. The latter may consist of paper impregnated with a resin, such as polystyrene. The insulation 3 is provided with a central aperture, as indicated, through which the selenium film beneath it is exposed. The selenium film may be prepared as described in Hewlett Patents 2,334,554 and 2,354,521. A blocking layer on the selenium (not shown) may be produced by treatment with hydrogen peroxide as described in Hewlett Patent 2,334,622. A counter-electrode 4, which may consist of an alloy of tin and cadmium is superimposed on the cell by spraying the liquid alloy over the entire top surface of the cell, thereby making electrical contact with the selenium film through the orifice. The cell is formed by passage of current, as well understood.
A single completed cell 5 and cooperating parts are illustrated in Fig. 4 and, as shown in connection with Fig. 5, a plurality of cells may be so mounted. Current connection may be made to the base I by a flat spiral 6 formed by coiling the conductor 1 near its end. Contact with the counter-electrode 4 is made by a similar fiat spiral 8 constituting part of a conductor 9. In place of the spirals 6 and 8 any plate-like contact members having a configuration conforming with the surfaces of the rectifier cell may be provided. As best shown in Fig. 1, the bent-over ends of the conductors I and 9 project outwardly substantially normal to the planes of the spirals 6, 8 As best shown in Fig. 1, the projecting spur I0 formed by the projecting end of the conductor I engages with a perforation l0 in the flat end wall of a clamp II. The projecting spur I2 of the conductor 9 engages with a perforation in an insulating washer l3, which may consist of fiber or of a suitable phenolic resin composition.
When thus assembled, the parts ar confined in fixed relation by bending the projecting prongs l4 of the clamp II over the assembly to bind the assembled parts, as indicated in Figs. 1 and 2. The rectifier cell and contact spirals thus are anchored and restrained by the interlocking of adjacent members against lateral motion and disengagement from properly assembled position. The insulating disk I3 prevents electrical contact of the spiral 8 with the clamp II which is in electrical contact with the spiral 6.
As shown at Fig. 1, the assembled parts finally are embedded in a mass l5 of a wax, or a resin, or other suitable easily fusible, non-conductive material which further ensures against loosening and disengagement of the assembled parts. The coating also protects the rectifier and contact from adverse climatic conditions which might produce corrosion.
, In the modified structure shown in Fig. 5, a conductor 16, the end of which is coiled into the form of a flat spiral l'l, passes through an insulating disk- [8; another conductor 19, the end of which is coiled into a spiral 20 passes through an insulating disk 2|. Between the fiat spirals are located two selenium cells 22, 23. A single selenium cell, or greater number of cells, may be similarly mounted. in this modification two clamps 24, 25 are provided, each clamp having prongs 26 (the top set being shown in Fig. 6) which are bent over and engage with the insulating disks l8 and 2|. The interior surface of the clamps 24, 25 may be provided with an insulating varnish coating as indicated in Fig. 5. Although not so indicated in the drawing, the modification of our improved assembly shown in Figs. and 6 also may be encased in wax or resin.
What we claim as new and desire to secure by Letters Patent of the United States, is:
1. A rectifier assembly comprising a discshaped current rectifier cell having planar electrodes on opposite surfaces thereof, a pair of electric conducting terminal members engaging said electrodes and each comprising an elongated conductor having a planar spirally coiled portion and a central axial spur portion projecting substantially perpendicular to the plane of said spiral portion, said spirally coiled portions engaging said surface electrodes respectively in fiatwise relation, 9, disc-shaped insulator overlying one said coiled terminal portion and having a central aperture coupled to the associated axial spur portion in interlockin relation, and a metallic clamping member having a perforated end wall overlying the other said coiled terminal portion and coupled to the associated axial spur portion in interlocking relation, said clamping member having a plurality of prongs extending from said end wall and engaging said insulator in clamping relation, thereby to hold said rectifier and said terminals in assembled relation.
2. A rectifier assembly comprising a discshaped selenium rectifier cell having electric conducting surfaces on opposite sides thereof constituting electrodes, a pair of terminal members engaging said electrodes and each comprising an elongated electric conductor having a planar spirally coiled portion and a central axial spur portion, said spirally coiled portion engaging a major portion of the area of said surface electrodes respectively in flatwise relation, a discshaped insulator overlying one said coiled terminal portion and having a central aperture coupled to the axial spur portion of said one terminal in interlocking relation, a metallic clamping member having a perforated end wall overlying the other said coiled terminal portion and coupled to the axial spur portion of said other terminal in interlocking relation, said clamping member having a plurality of prongs extending from said end wall and bent over said insulator in clamping relation thereby to hold said rectifier assembly and said terminals in assembled relation, and a mass of fusible insulating material encasing said entire assembly and filling the interstices of said enumerated cell, terminal members, clamping member and insulator, thereby to mold said rectifier assembly into an integral completely insulated unit.
RALPH T. CHEESEMAN. EDGAR A. HARTY.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,649,081 Rudolph Nov. 15, 1927 1,809,925 Edwards June 16, 1931 1,831,092 Bowles Nov. 10, 1931 1,839,431 Webster Jan. 5, 1932 1,905,525 Strabel Apr. 25, 1933 1,961,825 Harty June 5, 1934 1,973,039 Benedek Sept. 11, 1934 2,106,344 Flegal et al Jan. 25, 1938 2,117,020 Conrad May 10, 1938 2,178,969 Ruben Nov. 7, 1939 2,223,172 George Nov. 26, 1940 2,235,640 Kresge Mar. 18, 1941 2,261,618 Esseling et al Nov. 4, 1941 2,309,081 Priessman Jan. 26, 1943 FOREIGN PATENTS Number Country Date 234,281 England May 28, 1925 652,755 France Mar. 13, 1929
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912245C (en) * 1949-10-29 1954-05-28 Licentia Gmbh Dry rectifier with dry rectifier plate placed in a cup-shaped housing protected by an insulating ring
US2688110A (en) * 1950-11-30 1954-08-31 Bell Telephone Labor Inc Semiconductor translating device
US2744218A (en) * 1954-12-21 1956-05-01 Gen Electric Sealed rectifier unit and method of making the same
DE974229C (en) * 1952-07-18 1960-10-27 Licentia Gmbh Dry rectifier encapsulated with cast resin, especially selenium rectifier
DE1127485B (en) * 1959-10-22 1962-04-12 Siemens Ag Small type dry rectifier
US3112432A (en) * 1957-08-13 1963-11-26 Siemens Ag Dry rectifier device
US4853763A (en) * 1984-06-27 1989-08-01 The Bergquist Company Mounting base pad means for semiconductor devices and method of preparing same

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB234281A (en) * 1924-05-23 1925-05-28 Igranic Electric Co Ltd Improvements in or relating to electric condensers of fixed capacity
US1649081A (en) * 1925-10-21 1927-11-15 Corrie F Rudolph Piezo-electric-crystal mounting
FR652755A (en) * 1927-09-22 1929-03-13 Device for rectifying alternating currents
US1809925A (en) * 1929-05-14 1931-06-16 American Telephone & Telegraph Variable resistance device
US1831092A (en) * 1925-03-16 1931-11-10 Edward L Bowles Condenser
US1839431A (en) * 1926-06-29 1932-01-05 Gen Electric Electrostatic condenser
US1905525A (en) * 1931-09-10 1933-04-25 Union Switch & Signal Co Electrical rectifier
US1961825A (en) * 1932-05-10 1934-06-05 Gen Electric Tellurium alloy rectifier
US1973039A (en) * 1931-07-30 1934-09-11 Micamold Radio Corp Electrical condenser
US2106344A (en) * 1936-05-19 1938-01-25 Bell Telephone Labor Inc Electrical device
US2117020A (en) * 1937-09-30 1938-05-10 Westinghouse Electric & Mfg Co Copper-oxide rectifier
US2178969A (en) * 1937-05-24 1939-11-07 Ruben Samuel Potential producing cell
US2223172A (en) * 1937-11-16 1940-11-26 Rca Corp Tube mounting and by-pass condenser
US2235640A (en) * 1940-06-04 1941-03-18 Harry L Kresge Electrode connection for electric signs
US2261618A (en) * 1939-01-23 1941-11-04 Rca Corp Blocking-layer electrode system
US2309081A (en) * 1941-10-01 1943-01-26 Bell Telephone Labor Inc Electrically conductive device

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB234281A (en) * 1924-05-23 1925-05-28 Igranic Electric Co Ltd Improvements in or relating to electric condensers of fixed capacity
US1831092A (en) * 1925-03-16 1931-11-10 Edward L Bowles Condenser
US1649081A (en) * 1925-10-21 1927-11-15 Corrie F Rudolph Piezo-electric-crystal mounting
US1839431A (en) * 1926-06-29 1932-01-05 Gen Electric Electrostatic condenser
FR652755A (en) * 1927-09-22 1929-03-13 Device for rectifying alternating currents
US1809925A (en) * 1929-05-14 1931-06-16 American Telephone & Telegraph Variable resistance device
US1973039A (en) * 1931-07-30 1934-09-11 Micamold Radio Corp Electrical condenser
US1905525A (en) * 1931-09-10 1933-04-25 Union Switch & Signal Co Electrical rectifier
US1961825A (en) * 1932-05-10 1934-06-05 Gen Electric Tellurium alloy rectifier
US2106344A (en) * 1936-05-19 1938-01-25 Bell Telephone Labor Inc Electrical device
US2178969A (en) * 1937-05-24 1939-11-07 Ruben Samuel Potential producing cell
US2117020A (en) * 1937-09-30 1938-05-10 Westinghouse Electric & Mfg Co Copper-oxide rectifier
US2223172A (en) * 1937-11-16 1940-11-26 Rca Corp Tube mounting and by-pass condenser
US2261618A (en) * 1939-01-23 1941-11-04 Rca Corp Blocking-layer electrode system
US2235640A (en) * 1940-06-04 1941-03-18 Harry L Kresge Electrode connection for electric signs
US2309081A (en) * 1941-10-01 1943-01-26 Bell Telephone Labor Inc Electrically conductive device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE912245C (en) * 1949-10-29 1954-05-28 Licentia Gmbh Dry rectifier with dry rectifier plate placed in a cup-shaped housing protected by an insulating ring
US2688110A (en) * 1950-11-30 1954-08-31 Bell Telephone Labor Inc Semiconductor translating device
DE974229C (en) * 1952-07-18 1960-10-27 Licentia Gmbh Dry rectifier encapsulated with cast resin, especially selenium rectifier
US2744218A (en) * 1954-12-21 1956-05-01 Gen Electric Sealed rectifier unit and method of making the same
US3112432A (en) * 1957-08-13 1963-11-26 Siemens Ag Dry rectifier device
DE1127485B (en) * 1959-10-22 1962-04-12 Siemens Ag Small type dry rectifier
US4853763A (en) * 1984-06-27 1989-08-01 The Bergquist Company Mounting base pad means for semiconductor devices and method of preparing same

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