US2685075A - Contact ring for circular electrode supply conductors - Google Patents

Contact ring for circular electrode supply conductors Download PDF

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US2685075A
US2685075A US155395A US15539550A US2685075A US 2685075 A US2685075 A US 2685075A US 155395 A US155395 A US 155395A US 15539550 A US15539550 A US 15539550A US 2685075 A US2685075 A US 2685075A
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contact
tube
ring
apertures
contact ring
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US155395A
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Mol Gerardus Christian Jacobus
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Hartford National Bank and Trust Co
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Hartford National Bank and Trust Co
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices

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  • This invention relates to contact rings for circular, electrode supply conductors.
  • the grid is frequently mounted on a circular plate sealed into the wall of the tube, which plate may comprise a cylindrical edge for contact purposes.
  • the whole periphery thereof is used for this purpose.
  • the contact ring is constituted by a cylinder having rounded edges and the whole inner periphery of which is provided with a row of resilient contact strips. Some apertures for natural or forced ventilation are provided in the cylinder.
  • the disadvantage of the known construction is that the circulation of cooling air is least at -the areas of greatest development of heat, viz.
  • a contact ring for circular, electrode supply conductors is characterised in that the ring is manufactured from a hollow tube, the whole inner periphery being provided with two rows of contact strips, a plurality of apertures being provided in the hollow tube between the rows and a supply conduit for cooling air being provided.
  • contact ring is provided on a tube suitable therefor and connected to a conduit for compressed air, cooling air is forced through the apertures between the two rows of strips to the exterior, with the result that the cooling of the points of contact is very effective.
  • the apertures nearer to the supply conduit may be required to be smaller than those further from the supply conduit. It is evident that a plurality of supply conduits may be provided and furthermore that the apertures may be combined to form a narrow slit between the two rows of strips.
  • the ring may be interrupted (the resulting end apertures being closed) and the interruption may be bridged by means of a clamping device to enable the contact ring to be fitted more readily to different tubes.
  • Fig. 1 is a plan view of a contact ring according to the invention and Fig. 2 is a cross-sectional view thereof, taken along the vertical axis of Fig. 1.
  • Figs. 3 and 4 are cross-sectional views of modifications of a contact ring embodying the present invention.
  • a hollow tube I is bent in the form of a ring and comprises four attachment clamps 2.
  • Soldered to the ring is a supply conduit 3 and two rows of strips 4 are provided on the inner side of the ring. Apertures 5 provided between the strips allow cooling ,-air supplied through the conduit 3 to pass to the exterior.
  • the ring is interrupted and provided with two tags 6, which may be urged towards one another by means of a bolt.
  • Figure 3 shows the modification of the apertures wherein the apertures 5' decrease in size as they approach the supply conduit.
  • Figure 4 is another modification of the apertures showing the combining of the apertures to form a narrow slit 5" between the two rows of strips.
  • a contact ring for circular, electrode supply conductors comprising a ring-shaped hollow tube, a plurality of contact strips secured to the inner periphery of said tube and arranged in two spaced rows, said tube encircling said contact strips and having a plurality of apertures in the inner periphery thereof between said spaced rows of contact strips, and supply conduit means connected to said tube for supplying cooling air to said tube and apertures.
  • a contact ring for circular, electrode supply conductors comprising a hollow tube being of split ring construction, a plurality of contact strips secured to the inner periphery of said tube and arranged in two spaced rows, said tube encircling said contact strips and having a plurality of apertures in the inner periphery thereof between said rows of spaced contact strips, supply conduit means connected to said tube for supplying cooling air to said tube and apertures, and clamping means attached to the free ends of said hollow tube for urging said ends together.
  • a contact ring for circular, electrode supply conductors comprising a ring-shaped hollow tube
  • a contact ring for circular, electrode supply conductors comprising a ring-shaped hollow tube, a plurality of contact strips secured to the inner periphery of said tube and arranged in two spaced rows, said tube encircling said contact strips, a circular slit in the inner periphery of said tube between the rows of spaced contact strips, and supply conduit means connected to said tube for supplying cooling air to said tube and circular slit.

Description

G. C. J. MOL
July 27, 1954 CONTACT RING FOR CIRCULAR ELECTRODE SUPPLY CONDUCTORS Filed April 12 1950 BUS MOL AGENT Patented July 27, 1954 CONTACT RING FOR CIRCULAR ELECTRODE SUPPLY CONDUCTORS Gerardus Christianus Jacobus M01, Eindhoven, Netherlands, assignor to Hartford National Bank and Trust Company, Hartford, Conn., as
trustee Application April 12, 1950, Serial No. 155,395
Claims priority, application Netherlands May 18, 1949 4 Claims. (Cl. 339251) This invention relates to contact rings for circular, electrode supply conductors.
In discharge tubes of comparatively large size, more particularly in those intended for use in transmitters, the grid is frequently mounted on a circular plate sealed into the wall of the tube, which plate may comprise a cylindrical edge for contact purposes. In order to ensure optimum contact for high-frequency currents, the whole periphery thereof is used for this purpose.
In a known construction, the contact ring is constituted by a cylinder having rounded edges and the whole inner periphery of which is provided with a row of resilient contact strips. Some apertures for natural or forced ventilation are provided in the cylinder.
The disadvantage of the known construction is that the circulation of cooling air is least at -the areas of greatest development of heat, viz.
at the points at which the strips make contact with the circular, electrode supply conductor.
According to the invention, a contact ring for circular, electrode supply conductors is characterised in that the ring is manufactured from a hollow tube, the whole inner periphery being provided with two rows of contact strips, a plurality of apertures being provided in the hollow tube between the rows and a supply conduit for cooling air being provided.
If the contact ring is provided on a tube suitable therefor and connected to a conduit for compressed air, cooling air is forced through the apertures between the two rows of strips to the exterior, with the result that the cooling of the points of contact is very effective.
If the tube is comparatively narrow, the apertures nearer to the supply conduit may be required to be smaller than those further from the supply conduit. It is evident that a plurality of supply conduits may be provided and furthermore that the apertures may be combined to form a narrow slit between the two rows of strips.
Similarly as in the known contact ring, the ring may be interrupted (the resulting end apertures being closed) and the interruption may be bridged by means of a clamping device to enable the contact ring to be fitted more readily to different tubes.
The invention will now be explained more fully by reference to embodiment shown in the accompanying diagrammatic drawing, in which Fig. 1 is a plan view of a contact ring according to the invention and Fig. 2 is a cross-sectional view thereof, taken along the vertical axis of Fig. 1. Figs. 3 and 4 are cross-sectional views of modifications of a contact ring embodying the present invention.
Referring now to the drawing, a hollow tube I is bent in the form of a ring and comprises four attachment clamps 2. Soldered to the ring is a supply conduit 3 and two rows of strips 4 are provided on the inner side of the ring. Apertures 5 provided between the strips allow cooling ,-air supplied through the conduit 3 to pass to the exterior. On the side opposite the conduit 3, the ring is interrupted and provided with two tags 6, which may be urged towards one another by means of a bolt.
Figure 3 shows the modification of the apertures wherein the apertures 5' decrease in size as they approach the supply conduit.
Figure 4 is another modification of the apertures showing the combining of the apertures to form a narrow slit 5" between the two rows of strips.
What I claim is:
1. A contact ring for circular, electrode supply conductors comprising a ring-shaped hollow tube, a plurality of contact strips secured to the inner periphery of said tube and arranged in two spaced rows, said tube encircling said contact strips and having a plurality of apertures in the inner periphery thereof between said spaced rows of contact strips, and supply conduit means connected to said tube for supplying cooling air to said tube and apertures.
2. A contact ring for circular, electrode supply conductors comprising a hollow tube being of split ring construction, a plurality of contact strips secured to the inner periphery of said tube and arranged in two spaced rows, said tube encircling said contact strips and having a plurality of apertures in the inner periphery thereof between said rows of spaced contact strips, supply conduit means connected to said tube for supplying cooling air to said tube and apertures, and clamping means attached to the free ends of said hollow tube for urging said ends together.
3. A contact ring for circular, electrode supply conductors comprising a ring-shaped hollow tube,
a plurality of contact strips secured to the inner periphery of said tube and arranged in two spaced rows, said tube encircling said contact strips and vhaving a plurality of apertures in the inner periphery thereof between said rows of spaced contact strips, and supply conduit means connected to said tubes for supplying cooling air to said tube and apertures, said apertures progressively decreasing in size as the distance thereto from the supply conduit means increases.
4. A contact ring for circular, electrode supply conductors comprising a ring-shaped hollow tube, a plurality of contact strips secured to the inner periphery of said tube and arranged in two spaced rows, said tube encircling said contact strips, a circular slit in the inner periphery of said tube between the rows of spaced contact strips, and supply conduit means connected to said tube for supplying cooling air to said tube and circular slit.
References Cited in the file of this patent Number UNITED STATES PATENTS Name Date Riley v Dec. .28, 1926 Streib Apr. 21, 1942 Hofiman Dec. 24, 1946 Schmidt Sept. 26, 1950
US155395A 1949-05-18 1950-04-12 Contact ring for circular electrode supply conductors Expired - Lifetime US2685075A (en)

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NL2685075X 1949-05-18

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039665B (en) * 1954-12-03 1958-09-25 Standard Elektrik Lorenz Ag Contact washer for electrical contact connection in the decimeter wave range
US3214721A (en) * 1962-08-30 1965-10-26 Multi Contact Ag Electrical connector of the plug-and-jack type
US4164621A (en) * 1977-08-08 1979-08-14 Amerace Corporation Cable shield connecting device
US4691722A (en) * 1984-08-01 1987-09-08 Fsi Corporation Bowl for liquid spray processing machine
US4736085A (en) * 1982-12-07 1988-04-05 Inoue Japax Research Incorporated Current supplying apparatus for a wire-cut electric discharge machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612318A (en) * 1923-02-20 1926-12-28 Westinghouse Electric & Mfg Co Control apparatus
US2280728A (en) * 1939-11-24 1942-04-21 Rca Corp Telescoping high frequency electrical conductor
US2412987A (en) * 1942-04-04 1946-12-24 Standard Telephones Cables Ltd Vacuum tube connection
US2523725A (en) * 1945-11-03 1950-09-26 Western Electric Co Tuning plunger for variable resonant cavities

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612318A (en) * 1923-02-20 1926-12-28 Westinghouse Electric & Mfg Co Control apparatus
US2280728A (en) * 1939-11-24 1942-04-21 Rca Corp Telescoping high frequency electrical conductor
US2412987A (en) * 1942-04-04 1946-12-24 Standard Telephones Cables Ltd Vacuum tube connection
US2523725A (en) * 1945-11-03 1950-09-26 Western Electric Co Tuning plunger for variable resonant cavities

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1039665B (en) * 1954-12-03 1958-09-25 Standard Elektrik Lorenz Ag Contact washer for electrical contact connection in the decimeter wave range
US3214721A (en) * 1962-08-30 1965-10-26 Multi Contact Ag Electrical connector of the plug-and-jack type
US4164621A (en) * 1977-08-08 1979-08-14 Amerace Corporation Cable shield connecting device
US4736085A (en) * 1982-12-07 1988-04-05 Inoue Japax Research Incorporated Current supplying apparatus for a wire-cut electric discharge machine
US4691722A (en) * 1984-08-01 1987-09-08 Fsi Corporation Bowl for liquid spray processing machine

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