公开(公告)号：US3666377A

公开(公告)日：1972-05-30

申请号：US3666377D

申请日：1969-06-02

Applicant: VARIAN ASSOCIATES

Inventor： ROBERTSON DAVID D ,  WHEELER WILLIAM R

IPC: H01J7/18 ,  H01J41/16 ,  F04B37/02

CPC classification number: H01J7/18 ,  H01J41/16

Abstract: A HIGH VACUUM GETTERING PUMP IS DESCRIBED WHICH IS CAPABLE OF PROVIDING A HIGH VAPORIZATION RATE OF A GETTER MATERIAL. THE PUMP INCLUDES A HIGH THERMIONIC EMISSION CATHODE FILAMENT DISPOSED OVER A SURFACE OF A BULK SUPPLY OF A GETTER MATERAL SUCH AS TITANIUM. THE GETTER MATERIAL IS CONTAINED WITHIN A CUP-SHAPED HEAT SHIELD AND HAS A PERIPHERAL CONFIGURATION MINIMIZING THE AMOUNT OF MATERIAL AT THE SIDES OF THE BODY OF GETTER MATERIAL WHICH WILL NOT BE MELTED BY THERMIONIC EMISSION FROM THE FILAMENT WHEN A HIGH OPERATING POTENTIAL IS APPLIED BETWEEN THE FILAMENT AND THE GETTER MATERIAL BODY. A SHIELD IS ALSO

PROVIDED BLOCKING LINE-OF-SIGHT TRAVEL OF VAPORIZED GETTER MATERIAL TO A PORTION OF THE FILAMENT WHICH DOES NOT REACH A HIGH ENOUGH TEMPERATURE TO PREVENT CONDENSATION OF THE GETTER MATERIAL. THE SHEILD IS TAPERED INWARDLY AND CURVED AWAY FROM THE FILAMENT ADJACENT AN UNSHIELDED PORTION THEREOF TO MINIMIZE THE EFFECT CAUSED ON THE OPERATION OF THE FILAMENT BY THE BUILD-UP OF GETTER MATERIAL ON THE SHIELD.

公开(公告)号：US3486213A

公开(公告)日：1969-12-30

申请号：US3486213D

申请日：1968-08-27

Applicant: NORTON CO

Inventor： MALIAKAL JOSEPH C

IPC: H01J41/16 ,  B22D19/10

CPC classification number: H01J41/16 ,  Y10T29/49236 ,  Y10T29/49238 ,  Y10T29/49718

公开(公告)号：US3391303A

公开(公告)日：1968-07-02

申请号：US42783365

申请日：1965-01-25

Applicant: LEWIS D. HALL

Inventor： HALL LEWIS D

IPC: H01J7/18 ,  H01J41/16 ,  H01J41/20

CPC classification number: H01J41/20 ,  H01J7/186 ,  H01J41/16

公开(公告)号：US3382388A

公开(公告)日：1968-05-07

申请号：US3382388D

Applicant: RCA CORP

Inventor： HENDERSON WILLIAM G ,  MARK JOHN T

IPC: H01J7/18 ,  H01J41/16

CPC classification number: H01J7/186 ,  H01J41/16

公开(公告)号：US3356287A

公开(公告)日：1967-12-05

申请号：US47534465

申请日：1965-07-28

Applicant: GRANVILLE PHILLIPS COMPANY

Inventor： WINTERS HAROLD F

IPC: H01J41/16

CPC classification number: H01J41/16

公开(公告)号：USRE26138E

公开(公告)日：1967-01-10

申请号：US26138D

IPC: H01J41/16

CPC classification number: H01J41/16

公开(公告)号：US3251536A

公开(公告)日：1966-05-17

申请号：US31479563

申请日：1963-10-08

Applicant: CONS VACUUM CORP

Inventor： CONNOR THOMAS A

IPC: H01J41/16

CPC classification number: H01J41/16

公开(公告)号：US3081413A

公开(公告)日：1963-03-12

申请号：US5200760

申请日：1960-08-22

Applicant: GEN ELECTRIC

Inventor： CUMMINGS HAROLD R

IPC: H01J35/20 ,  H01J35/26 ,  H01J41/16

CPC classification number: H01J41/16 ,  H01J35/20 ,  H01J35/26

公开(公告)号：US2980317A

公开(公告)日：1961-04-18

申请号：US72817558

申请日：1958-04-14

Applicant: LEYBOLDS NACHFOLGER E

Inventor： GUNTER REICH

IPC: H01J41/16

CPC classification number: H01J41/16

公开(公告)号：US2972690A

公开(公告)日：1961-02-21

申请号：US83013359

申请日：1959-07-28

Applicant: NAT COMPANY INC

Inventor： MCCOUBREY ARTHUR O

IPC: H01J41/04 ,  H01J41/16

CPC classification number: H01J41/16 ,  H01J41/04