GB949836A - Apparatus for use in the coating of electrically conducting members by the process of electrophoresis - Google Patents

Apparatus for use in the coating of electrically conducting members by the process of electrophoresis

Info

Publication number
GB949836A
GB949836A GB35095/60A GB3509560A GB949836A GB 949836 A GB949836 A GB 949836A GB 35095/60 A GB35095/60 A GB 35095/60A GB 3509560 A GB3509560 A GB 3509560A GB 949836 A GB949836 A GB 949836A
Authority
GB
United Kingdom
Prior art keywords
conductors
coating
compartments
projections
trough
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
Application number
GB35095/60A
Inventor
Thomas Jackson
Alexander Mcpherson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Associated Electrical Industries Ltd
Original Assignee
Associated Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL270193D priority Critical patent/NL270193A/xx
Application filed by Associated Electrical Industries Ltd filed Critical Associated Electrical Industries Ltd
Priority to GB35095/60A priority patent/GB949836A/en
Priority to US143708A priority patent/US3094477A/en
Priority to FR875968A priority patent/FR1303793A/en
Publication of GB949836A publication Critical patent/GB949836A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/22—Servicing or operating apparatus or multistep processes

Abstract

<PICT:0949836/C3/1> Apparatus for coating a selected portion, or portions, of electrical conductors with electro phoretic deposits of uniform thickness, particularly the coating of tubular conductors with thermionically emissive material for the construction of indirectly heated cathodes. A rotary cylindrical drum 1 is fitted with a plurality of peripheral rows of raised projections 3-two in example shown-and formed from electrically insulating material. The electrical conductors 4 for coating are supported between successive projections of each row and the lateral spacing between the peripheral rows of projections defines the portion(s) of the conductors to be coated, and other portions are effectively masked. During rotation of the drum 1 about its axis a segment dips into liquids contained in trough 2. Each trough has a plurality of ribs 5-two in example shown-which co-act with said rows of projections 3 to partition the trough into compartments. Alternate compartments contain an electrophoretic suspension to be applied to said conductors and an electrode of positive charge 7 which drips into said suspension; the remaining compartments containing an electrically conductive liquid of high surface tension, usually mercury, through which electrical contact with the said conductors is obtained from negative electrodes 9. The drums 1 and troughs 2, of electrically insulating material, are suitably formed from nylon. The speed of rotation of the drum, and the current supplied to the electrodes, determine the thickness of the coating which is formed on the conductors. In a modification (not shown) the trough 2 is subdivided into five compartments by four rows of raised projections 3 and co-acting ribs 5, the outer and central compartments containing the electrophoretic suspension with mercury in the intermediate compartments. A further embodiment of the invention is that whereby the raised projections are formed on an endless flexible band which moves over the circumference of both said drum support and a further cylindrical drum spaced apart therefrom.
GB35095/60A 1960-10-13 1960-10-13 Apparatus for use in the coating of electrically conducting members by the process of electrophoresis Expired GB949836A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL270193D NL270193A (en) 1960-10-13
GB35095/60A GB949836A (en) 1960-10-13 1960-10-13 Apparatus for use in the coating of electrically conducting members by the process of electrophoresis
US143708A US3094477A (en) 1960-10-13 1961-10-09 Apparatus for use in the coating of electrically conducting members by the process ofelectrophoresis
FR875968A FR1303793A (en) 1960-10-13 1961-10-13 Coating device for conductive parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35095/60A GB949836A (en) 1960-10-13 1960-10-13 Apparatus for use in the coating of electrically conducting members by the process of electrophoresis

Publications (1)

Publication Number Publication Date
GB949836A true GB949836A (en) 1964-02-19

Family

ID=10373753

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35095/60A Expired GB949836A (en) 1960-10-13 1960-10-13 Apparatus for use in the coating of electrically conducting members by the process of electrophoresis

Country Status (3)

Country Link
US (1) US3094477A (en)
GB (1) GB949836A (en)
NL (1) NL270193A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010800A1 (en) * 1978-10-31 1980-05-14 Koninklijke Philips Electronics N.V. Apparatus for and method of electrophoretic coating of cathode shafts with an emissive layer

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3303078A (en) * 1962-05-18 1967-02-07 David Wolf Method of making electrical components
US3360450A (en) * 1962-11-19 1967-12-26 American Optical Corp Method of making cathode ray tube face plates utilizing electrophoretic deposition
US3280019A (en) * 1963-07-03 1966-10-18 Ibm Method of selectively coating semiconductor chips
US3355363A (en) * 1964-02-14 1967-11-28 Stanley J Gasior Method of producing a nonagglomerating char from a strongly caking coal
US3830716A (en) * 1971-07-22 1974-08-20 Armco Steel Corp Electrocoating method and apparatus
US7943028B2 (en) * 2004-08-13 2011-05-17 Ppg Industries Ohio, Inc. Method for coating objects
US7947160B2 (en) * 2004-08-13 2011-05-24 Ppg Industries Ohio, Inc. System for coating objects

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316444C (en) *
US2054273A (en) * 1933-12-26 1936-09-15 Union Oil Co Process and apparatus for dewaxing oil
US2154949A (en) * 1937-05-12 1939-04-18 Bird Machine Co Art of extruding moist plastic material
GB520481A (en) * 1938-10-15 1940-04-25 Bibby & Sons Ltd J Improvements in apparatus for separating suspended matter from liquids by means of electrostatic precipitation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010800A1 (en) * 1978-10-31 1980-05-14 Koninklijke Philips Electronics N.V. Apparatus for and method of electrophoretic coating of cathode shafts with an emissive layer

Also Published As

Publication number Publication date
NL270193A (en) 1900-01-01
US3094477A (en) 1963-06-18

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