公开(公告)号：US3553521A

公开(公告)日：1971-01-05

申请号：US3553521D

申请日：1968-01-29

Applicant: PHILIPS CORP

Inventor： BAKKER MARINUS ANTONIUS MARIA ,  DURAN JOHANNES CHRISTIAAN

IPC: H01J1/24 ,  H01J1/26 ,  H01J1/20 ,  H01J19/14

CPC classification number: H01J1/24 ,  H01J1/26

Abstract: An indirectly heated cathode for electron discharge tube having a refractory metal support, e.g. molybdenum or tungsten, the inner surface of which is coated with a thin layer of a metal of the platinum group to minimize oxidation of the refractory metal. The cathode is insulated from a heating element by a layer of alumina which surrounds the heating element.

公开(公告)号：US3056061A

公开(公告)日：1962-09-25

申请号：US318360

申请日：1960-01-18

Applicant: PHILIPS CORP

Inventor： HANS MELSERT

IPC: H01J1/26 ,  H01J9/04

CPC classification number: H01J1/26 ,  H01J9/04

公开(公告)号：US2843781A

公开(公告)日：1958-07-15

申请号：US46578554

申请日：1954-11-01

Applicant: SYLVANIA ELECTRIC PROD

Inventor： KERSTETTER DONALD R ,  BUESCHER WILLIAM E ,  GARRETT JAMES J

IPC: H01J1/26

CPC classification number: H01J1/26

公开(公告)号：US2612619A

公开(公告)日：1952-09-30

申请号：US6273448

申请日：1948-11-30

Applicant: RCA CORP

Inventor： FRIEDLI JR ROBERT

IPC: H01J1/26

CPC classification number: H01J1/26

公开(公告)号：US2478841A

公开(公告)日：1949-08-09

申请号：US76153947

申请日：1947-07-17

Applicant: HARTFORD NAT BANK & TRUST CO

Inventor： GERRIT SCHMIDT

IPC: H01J1/26

CPC classification number: H01J1/26

公开(公告)号：US2455287A

公开(公告)日：1948-11-30

申请号：US55272144

申请日：1944-09-05

Applicant: NAT UNION RADIO CORP

Inventor： ALLEN JR HOWARD B

IPC: H01J1/26

CPC classification number: H01J1/26

公开(公告)号：US2324177A

公开(公告)日：1943-07-13

申请号：US42528942

申请日：1942-01-01

Applicant: RCA CORP

Inventor： SMITH NEWELL R

IPC: H01J1/26

CPC classification number: H01J1/26 ,  Y10T29/49787 ,  Y10T29/4979 ,  Y10T29/5185

公开(公告)号：US2154298A

公开(公告)日：1939-04-11

申请号：US10584436

申请日：1936-10-16

Applicant: GEN ELECTRIC

Inventor： AYER RAYMOND B

IPC: H01J1/26 ,  H01J17/06

CPC classification number: H01J1/26 ,  H01J17/063

公开(公告)号：US2072576A

公开(公告)日：1937-03-02

申请号：US8722036

申请日：1936-06-25

Applicant: BELL TELEPHONE LABOR INC

Inventor： ACKER JOHN T ,  WILSON JAMES R

IPC: C22C19/00 ,  H01J1/146 ,  H01J1/26

CPC classification number: C22C19/00 ,  H01J1/146 ,  H01J1/26

公开(公告)号：US20250157775A1

公开(公告)日：2025-05-15

申请号：US18944039

申请日：2024-11-12

Applicant: Axcelis Technologies, Inc.

Inventor： Steve T. Drummond

IPC: H01J1/26 ,  H01J37/30 ,  H01J37/317

Abstract: A cathode filament device for an indirectly heated cathode has a first and second filament rods having respective first and second engagement portions. The first engagement portion has a first engagement body with first and second positioning features extending from the first engagement body. The second engagement portion has at least a second engagement body. Third and fourth positioning features may extend from the second engagement body. First and second clamping members have respective clamping surfaces configured to selectively engage the respective first and second engagement bodies. At least the first positioning feature limits a translation of the first filament rod with respect to the first clamping member along a first axis. The second, third, and fourth positioning features may further limit the translation and secure a position of a filament coupled to the first and second filament rods.