公开(公告)号：US2468037A

公开(公告)日：1949-04-26

申请号：US73471247

申请日：1947-03-14

Applicant: CLARK DUDLEY B

Inventor： CLARK DUDLEY B

IPC: H01J1/00 ,  H01J13/50

CPC classification number: H01J1/00 ,  H01J13/50 ,  H01J2893/005 ,  H01J2893/0088

公开(公告)号：US2192047A

公开(公告)日：1940-02-27

申请号：US25415539

申请日：1939-02-02

Applicant: GEN ELECTRIC

Inventor： MILES LAWRENCE D

IPC: H01J13/48 ,  H01J13/50

CPC classification number: H01J13/48 ,  H01J13/50 ,  H01J2893/0088

公开(公告)号：US2170482A

公开(公告)日：1939-08-22

申请号：US6715536

申请日：1936-03-04

Applicant: PHILIPS NV

Inventor： WILHELM MULDER JOHANNES GIJSBE

IPC: H01J13/32 ,  H01J13/50

CPC classification number: H01J13/32 ,  H01J13/50 ,  H01J2893/0088

公开(公告)号：US2130888A

公开(公告)日：1938-09-20

申请号：US6488036

申请日：1936-02-20

Applicant: WESTINGHOUSE ELECTRIC & MFG CO

Inventor： MARSHALL DONALD E

IPC: H01J13/26 ,  H01J13/50

CPC classification number: H01J13/26 ,  H01J13/50 ,  H01J2893/0088

公开(公告)号：US1873722A

公开(公告)日：1932-08-23

申请号：US75921424

申请日：1924-12-31

Applicant: GEN ELECTRIC

Inventor： PRINCE DAVID C

IPC: H01J13/48 ,  H01J13/50

CPC classification number: H01J13/48 ,  H01J13/50 ,  H01J2893/0088

公开(公告)号：US1811521A

公开(公告)日：1931-06-23

申请号：US47780730

申请日：1930-08-26

Applicant: OSKAR SEITZ

Inventor： OSKAR SEITZ

IPC: H01J13/50 ,  H01J13/56

CPC classification number: H01J13/50 ,  H01J13/56 ,  H01J2893/0088

公开(公告)号：US1630055A

公开(公告)日：1927-05-24

申请号：US1630055D

申请日：1922-04-12

IPC: A61N5/00 ,  A61N5/06 ,  H01J13/50

CPC classification number: A61N5/06 ,  A61N2005/005 ,  A61N2005/0644 ,  H01J13/50 ,  H01J2893/0088

公开(公告)号：US1562959A

公开(公告)日：1925-11-24

申请号：US45438721

申请日：1921-03-22

Applicant: WESTINGHOUSE LAMP CO

Inventor： LESLIE HARRINGTON ERTLE

IPC: H01J13/50 ,  H01J61/54

CPC classification number: H01J13/50 ,  H01J61/54 ,  H01J2893/0088

公开(公告)号：US09653248B2

公开(公告)日：2017-05-16

申请号：US14582782

申请日：2014-12-24

Applicant: Kabushiki Kaisha Toshiba ,  Toshiba Electron Tubes & Devices Co., Ltd.

Inventor： Tomonari Ishihara ,  Naoki Akahori ,  Hidero Anno

IPC: H01J35/14 ,  H01J35/06 ,  H01J3/06 ,  H01J29/50 ,  H01J37/065 ,  H01J19/42 ,  H01J19/10 ,  H01J1/88 ,  A61B6/00 ,  H01J1/16 ,  H01J1/18 ,  H01J23/083 ,  H01J3/18 ,  H01J23/04 ,  H01J29/04 ,  H01J29/62

CPC classification number: H01J35/06 ,  A61B6/44 ,  H01J1/16 ,  H01J1/18 ,  H01J1/88 ,  H01J3/06 ,  H01J3/18 ,  H01J19/10 ,  H01J19/42 ,  H01J23/04 ,  H01J23/083 ,  H01J29/04 ,  H01J29/50 ,  H01J29/62 ,  H01J35/14 ,  H01J37/065 ,  H01J2229/481 ,  H01J2229/4827 ,  H01J2229/4831 ,  H01J2229/50 ,  H01J2229/582 ,  H01J2229/5835 ,  H01J2235/06 ,  H01J2237/032 ,  H01J2237/049 ,  H01J2237/06375 ,  H01J2893/0005 ,  H01J2893/005 ,  H01J2893/0088 ,  H01J2893/0089 ,  H01J2893/0094

Abstract: According to one embodiment, an X-ray tube includes an anode target, a cathode including a filament and a convergence electrode which includes a groove portion, and an envelope. The groove portion includes a pair of first bottom surfaces which are located in the same plane as the filament and between which the filament is interposed in a width direction of the groove portion, and a pair of second bottom surfaces between which the filament and the pair of first bottom surfaces are interposed in a length direction of the groove portion and which are located closer to an opening of the groove portion than the pair of first bottom surfaces.

公开(公告)号：US2712086A

公开(公告)日：1955-06-28

申请号：US2712086D

IPC: H01J13/32 ,  H01J13/50

CPC classification number: H01J13/32 ,  H01J13/50 ,  H01J2893/0088