US1361099A - Thermionic device - Google Patents

Thermionic device Download PDF

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Publication number
US1361099A
US1361099A US383281A US38328120A US1361099A US 1361099 A US1361099 A US 1361099A US 383281 A US383281 A US 383281A US 38328120 A US38328120 A US 38328120A US 1361099 A US1361099 A US 1361099A
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US
United States
Prior art keywords
filament
grid
surrounding
anode
thermionic device
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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
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US383281A
Inventor
Round Henry Joseph
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.)
RCA Corp
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RCA Corp
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Publication date
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Priority to US383281A priority Critical patent/US1361099A/en
Application granted granted Critical
Publication of US1361099A publication Critical patent/US1361099A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path

Definitions

  • A is a hollow metal tube closed at its inner end and sealed at B into the glass of the bulb C and acting as the anode. It is surrounded by a grid D the lead from which passes out through the glass at E.
  • F is a filament which is arranged preferably *as a coil around the grid and is maintained in position by supports G, the leads fromit being sealed through the glass at H. I is a.
  • this sheath may be provided with a negative charge of electricity and the connection K may be used for this purpose.
  • the filament in place of forming the filament as a single coil I may construct it in many other ways as the invention is not limited to specific constructions.
  • WVhat I claim is-: g
  • a thermionic device the combination of an anode, a grid surrounding the anode, a filament surrounding the grid and a metal sheath surrounding the filament.
  • a thermionic device the combination of an anode, means for cooling it, a grid surrounding the anode, a filament surrounding the grid and a metal sheath surrounding the filament.
  • a thermionic device the combination of a hollow anode, means for. leading cooling fluid thereto, a grid surrounding the anode, a filament surrounding the grid and a metal sheath surrounding the filament.

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  • Solid Thermionic Cathode (AREA)

Description

H. J. ROUND.
THERMIONIC DEVICE.
APPLICATION FILED MAY 21. 1920.
1,361,099. Patented Dec. 7, 1920.
Henr f d 2, 1M MM 4 farny UNITED STATES PATENT OFFICE.
HENRY JOSEPH ROUND, 0]? LONDON, ENGLAND, ASSIGNOR T0 RADIO CORPORATION I OF AMERICA, A CORPORATION OF DELAWARE.
THERMIONIG DEVICE.
Specification of Letters Patent.
Patented Dec. 7, 1920.
Application filed May 21, 1920. Serial N0. 383,281.
To all whom it may] concern:
Be it known that I, HENRY JOSEPH ROUND, a subject ofmthe King of Great Britain, and resident of 9 VVoodberry Crescent, Muswell Hill, London, England, have invented'new and useful Improvements in Thermionic Devices, of which the following is. a specipanying drawing which is a section of a valve.
A is a hollow metal tube closed at its inner end and sealed at B into the glass of the bulb C and acting as the anode. It is surrounded by a grid D the lead from which passes out through the glass at E. F is a filament which is arranged preferably *as a coil around the grid and is maintained in position by supports G, the leads fromit being sealed through the glass at H. I is a.
- ing the glass. In some cases this sheath may be provided with a negative charge of electricity and the connection K may be used for this purpose.
In place of forming the filament as a single coil I may construct it in many other ways as the invention is not limited to specific constructions.
WVhat I claim is-: g
1. In a thermionic device, the combination of an anode, a grid surrounding the anode, a filament surrounding the grid and a metal sheath surrounding the filament.
2. In a thermionic device, the combination of an anode, means for cooling it, a grid surrounding the anode, a filament surrounding the grid and a metal sheath surrounding the filament.
3. Ina thermionic device, the combination of a hollow anode, means for. leading cooling fluid thereto, a grid surrounding the anode, a filament surrounding the grid and a metal sheath surrounding the filament.
In testimony that I claim the foregoing as my invention I have signedmy name this third day of May 1920.
HENRY JOSEPH ROUN D.
US383281A 1920-05-21 1920-05-21 Thermionic device Expired - Lifetime US1361099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US383281A US1361099A (en) 1920-05-21 1920-05-21 Thermionic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US383281A US1361099A (en) 1920-05-21 1920-05-21 Thermionic device

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US1361099A true US1361099A (en) 1920-12-07

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Family Applications (1)

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US383281A Expired - Lifetime US1361099A (en) 1920-05-21 1920-05-21 Thermionic device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805361A (en) * 1946-07-17 1957-09-03 Raytheon Mfg Co Electron-discharge devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2805361A (en) * 1946-07-17 1957-09-03 Raytheon Mfg Co Electron-discharge devices

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