US2488791A - Electron discharge tube with trimming condenser - Google Patents

Electron discharge tube with trimming condenser Download PDF

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Publication number
US2488791A
US2488791A US762151A US76215147A US2488791A US 2488791 A US2488791 A US 2488791A US 762151 A US762151 A US 762151A US 76215147 A US76215147 A US 76215147A US 2488791 A US2488791 A US 2488791A
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US
United States
Prior art keywords
condenser
plate
tube
trimming
discharge tube
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 - Lifetime
Application number
US762151A
Other languages
English (en)
Inventor
Zaat Josephus Arnold Bernardus
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.)
Hartford National Bank and Trust Co
Original Assignee
Hartford National Bank and Trust Co
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
Application filed by Hartford National Bank and Trust Co filed Critical Hartford National Bank and Trust Co
Application granted granted Critical
Publication of US2488791A publication Critical patent/US2488791A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/12—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
    • H01J7/44—One or more circuit elements structurally associated with the tube or lamp

Definitions

  • each tube is adapted to be replaced by a tube of the same type without the necessity of altering the apparatus in which the tubes are used.
  • the shielding plate is, according to the invention, provided with one or more incisions in a manner such that that portion of this plate, which functions as an electrode for the trimming condenser, engages the dielectric resiliently.
  • FIG. 1 shows an embodiment of a tube with trimming condenser according to the invention, in perspective
  • Figs. 2 and 3 are views of the condenser in plan and section, respectively.
  • the reference numeral l denotes the wall of the tube, 2 the shielding plate and 3 the contact pin which may be connected to an electrode which requires to be given a definite exact capacity.
  • Contact pin 3 is secured to a semi-circular metallisation 4 at the lower side of the bottom of the tube, this metallisation constituting an electrode of the trimming condenser.
  • the metal shielding plate 2 constitutes the other electrode of this condenser.
  • These two electrodes are separated by a dielectric in the form of an insulating plate 5 which is rotatable about pin 3 and exhibits an aperture 6 of such a shape that upon rotation of plate 5 the quantity of insulating material between the electrodes of the trimming condenser changes, with the result that the capacity of this condenser is changed. Rotation of plate 5 may be effected through the aperture 1.
  • the shielding plate is embossed at several points, thus forming elevations 10 with which the shielding plate rests on the bottom of the tube.
  • incisions 8 and 9 are provided in the shielding plate 2, as a result of Which the portion functioning as an electrode of the trimming condenser, is resilient and engages the insulating plate 5 with a definite pressure. In this manner this plate cannot shift during transport and thermal strains in the shielding plate 2 cannot give rise to displacement of the plate.
  • An electric discharge tube having an envelope with a trimming condenser on the outside thereof for changing the capacity of the electrodes in said tube, said tube comprising a shielding plate, said plate having a portion forming one electrode of said condenser, a metal plate interposed between the said shielding plate and the said envelope forming the second electrode of said condenser, and a dielectric arranged between said condenser electrodes, said electrodeforming portion of the shielding plate having at least one incision for rendering said plate portion 4 having at least one incision for rendering said plate resilient, whereby said portion is yieldingly engaged with said insulating plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
US762151A 1946-08-06 1947-07-19 Electron discharge tube with trimming condenser Expired - Lifetime US2488791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL259237X 1946-08-06

Publications (1)

Publication Number Publication Date
US2488791A true US2488791A (en) 1949-11-22

Family

ID=19781434

Family Applications (1)

Application Number Title Priority Date Filing Date
US762151A Expired - Lifetime US2488791A (en) 1946-08-06 1947-07-19 Electron discharge tube with trimming condenser

Country Status (7)

Country Link
US (1) US2488791A (fr)
BE (1) BE475088A (fr)
CH (1) CH259237A (fr)
DE (1) DE809326C (fr)
FR (1) FR950959A (fr)
GB (1) GB639794A (fr)
NL (1) NL69237C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620378A (en) * 1949-11-29 1952-12-02 Standard Coil Prod Co Inc Fine tuner for turret type tuners
US2748328A (en) * 1953-12-14 1956-05-29 Premier Res Lab Inc Combination pronged base for electrical devices
US2768300A (en) * 1952-04-09 1956-10-23 Standard Coil Prod Co Inc Fine tuner for turret type tuners

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923552A (en) * 1928-10-24 1933-08-22 Murphy Edmund Guyer Vacuum tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923552A (en) * 1928-10-24 1933-08-22 Murphy Edmund Guyer Vacuum tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620378A (en) * 1949-11-29 1952-12-02 Standard Coil Prod Co Inc Fine tuner for turret type tuners
US2768300A (en) * 1952-04-09 1956-10-23 Standard Coil Prod Co Inc Fine tuner for turret type tuners
US2748328A (en) * 1953-12-14 1956-05-29 Premier Res Lab Inc Combination pronged base for electrical devices

Also Published As

Publication number Publication date
NL69237C (fr)
FR950959A (fr) 1949-10-12
DE809326C (de) 1951-07-26
CH259237A (de) 1949-01-15
GB639794A (en) 1950-07-05
BE475088A (fr)

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