US3816788A - Getter device - Google Patents

Getter device Download PDF

Info

Publication number
US3816788A
US3816788A US00239617A US23961772A US3816788A US 3816788 A US3816788 A US 3816788A US 00239617 A US00239617 A US 00239617A US 23961772 A US23961772 A US 23961772A US 3816788 A US3816788 A US 3816788A
Authority
US
United States
Prior art keywords
getter
picture tube
annular channel
getter material
barium
Prior art date
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
Application number
US00239617A
Inventor
C Reash
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.)
SAES Getters SpA
Original Assignee
Union Carbide Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Union Carbide Corp filed Critical Union Carbide Corp
Priority to US00239617A priority Critical patent/US3816788A/en
Priority to CA161,957A priority patent/CA954180A/en
Priority to DE19732303749 priority patent/DE2303749C3/en
Priority to NL7301891.A priority patent/NL161296C/en
Priority to JP1579073A priority patent/JPS4916370A/ja
Priority to GB640773A priority patent/GB1417247A/en
Application granted granted Critical
Publication of US3816788A publication Critical patent/US3816788A/en
Assigned to MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. reassignment MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. MORTGAGE (SEE DOCUMENT FOR DETAILS). Assignors: STP CORPORATION, A CORP. OF DE.,, UNION CARBIDE AGRICULTURAL PRODUCTS CO., INC., A CORP. OF PA.,, UNION CARBIDE CORPORATION, A CORP.,, UNION CARBIDE EUROPE S.A., A SWISS CORP.
Assigned to UNION CARBIDE CORPORATION, reassignment UNION CARBIDE CORPORATION, RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: MORGAN BANK (DELAWARE) AS COLLATERAL AGENT
Assigned to GETTERS CORPORATION OF AMERICA, A CORP. OF DE. reassignment GETTERS CORPORATION OF AMERICA, A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: UNION CARBIDE CORPORATION
Assigned to SAES GETTERS SPA reassignment SAES GETTERS SPA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GETTERS CORPORATION OF AMERICA
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering

Definitions

  • a getter assembly for use in a television picture tube A l N 239 617 comprising a receptacle containing getter material ar- [211 pp 0 ranged on the inside surface of the funnel portion of the picture tube and having a cover member which is U.S. Clp ovided deflecting members so as to prevent uni5 1 Int. Cl.
  • the necessary vacuum is obtained through the use of getters, ordinarily barium getters, whereby barium is flashed or vaporized within the picture tube.
  • the vaporized getter material e.g., barium, soaks and reacts with the residual gases in the picture tube and removes them as low vapor pressure solid condensates.
  • the barium which is deposited on the interior surfaces of the picture tube continues to sorb gases which may be liberated during use of the picture tube.
  • getter devices commonly in the form of ring shaped containers, were mounted in the neck portion of the picture tube.
  • getter container on the inside surface of the funnel portion of the picture tube.
  • This arrangement has various advantages, however, a significant disadvantage is the deposition of getter material, e.g., barium, on the screen of the picture tube and at other locations where such deposition is disadvantageous.
  • getter material e.g., barium
  • the barium deposition on the picture screen is excessive, the light out put is reduced with obvious disadvantages.
  • excessive barium deposition on the electron gun, at the junction of the picture tube funnel and screens, and on the tube funnel adjacent the getter are disadvantageous as well known.
  • FIG. 1 shows somewhat schematically a conventional picture tube and electron gun arrangement together with a known getter support which incorporates the novel shielded getter arrangement of the present invention
  • FIG. 1A is a cross-sectional view of the device of FIG. 1
  • FIG. 2 shows a plan view of the bottom portion of a solid center getter container
  • FIG. 3 shows and elevation view of the device of FIG.
  • FIG. 4- shows a plan view of a getter cover for use in conjunction with the device of FIG. 2
  • FIG. 5 is an elevation view of the getter cover of FIG. 4
  • FIG. 6 is a plan view of the assembled device of FIG. 7
  • FIG. 7 and 7A show an assembly of the devices of FIGS. 2 and 3
  • FIG. 8 is an enlarged fragmented sectional view of the device of the present invention.
  • a getter arrangement in accordance with the present invention comprises, in combination, a picture tube havinga conical funnel portion and a screen surface, a getter device having an annular channel containing getter material arranged adjacent to the funnel portion of the picture tube, the annular channel being sealed at its bottom adjacent the funnel portion of the picture tube, the upper portion of the annular channel being directed toward the interior of the picture tube a covering member attached to the getter device providing essentially total closure of central segments of the upper portion of the annular channel, with openings to the annular channel being provided only at opposed locations oriented away from the screen surface of the picture tube and upwardly slanting deflecting members attached to the getter device and arranged above said openings whereby getter material expelled from the annular channel is directed away from the getter device.
  • FIG. 1 shows a conventional television picture tube 1 having a funnel portion 3', a neck portion 5, and a screen 7, e.g., a tri-color screen formed by techniques well known in the art.
  • An electron gun shown schematically at 9, is located within the tube neck 5.
  • Getter assembly 13 includes a cover member 15, in accordance with the present invention, which is hereinafter more fully described.
  • conventional R-F heating coil l7 flashes the getter material in getter assembly 13 in a known manner whereby the vaporized getter, e.g., barium is expelled into the picture tube I as hereinafter described.
  • a cylindrical getter container suitably formed of stainless steel, is shown at 19 having an up-raised bottom portion 21 which forms an annular channel 23 in which is pressed a getter material 24 in the usual manner.
  • the getter material may be, for example, 1,000 mg of a 25 per cent barium 25 per cent aluminum, 50 puent nickel exothermic alloy yielding about 225 mg of barium upon flashing.
  • the flashing of the getter requires heating to a high temperature, about l,300 C, to vaporize the barium or whatever getter material is used.
  • the vaporized getter material is directed into the picture tube in a particular manner utilizing the cover member illustrated in FIGS. 4 and 5.
  • the cover member 15 suitably of stainless steel, is shown to be circular in shape having flat portions 25, a depressed center portion 27 and upturned, opposed segments 29.
  • cover member 15 is placed over getter container 19 and is affixed thereto, e.g., by a spot weld indicated at 31 in FIGS. 7 and 7A.
  • Cover member 15 fits closely within container 19 and is configured such that the flat portions 25 cover and effectively seal the central segments of the upper surface of the channel 23 which otherwise would have line of sight access to the parts of the tube envelope where a minimization of the barium deposit is desired, preferably a major portion.
  • the upturned segments 29 establish openings 32 to the channel 23 whereby vaporized getter material expelled from the channel 23 is permitted to enter the picture tube 1.
  • getter assembly 13 is arranged in the picture tube 1 so that the chordal upturned segments 29 are at locations 33 which are oriented away from the picture tube screen 7, i.e., the openings 32 are in line with the circumference of the conical funnel portion as indicated at 35.
  • Another way of describing the position of openings 31 is that they are arranged in line transverse to the slope 37 of the funnel portion which passes through the getter device.
  • vaporized getter material is expelled from annular channel 23 through predetermined openings 31 and the vaporized getter exiting container 19 is deflected by segments 29 in a direction away from the picture screen 7 and also away from electron gun 9 as can be seen in FIG. 1A.
  • the arrangement of segments 29, and the shielding provided by flat portions 25, directs the deposit of getter material away from the tube screen 7 and electron gun 9. Also, as can be readily seen from FIG. 8, with cover member recessed in getter container 19 as shown, the vertical extended portion 40 of getter container 19 prevents the formation of a heavy deposit of getter material on the funnel next to the getter assembly 13, which could lead to ionization or cracking of the glass.
  • the slant angle of segments 29 can suitably range from about 15" to 30 and by variation of this angle, and with adjustment of the height of the extended portion 40 of getter container 19, getter deposition on screen 7 can be readily controlled and thereby minimized.
  • a getter assembly was made with a container of 305 stainless steel having an outer diameter of 0.765 inch.
  • the height of the con tainer sides was 0.165 inch, the width of the getter channel was 0.222 inch and the height of the up raised center portion was 0.085 inch.
  • the cover for the getter container was formed from 305 stainless steel and had a diameter of 0.745 inch.
  • the flat portion of the cover was recessed 0.029 inch below the top of the container side and the deflecting members were slanted upward at an angle of about 20 at a distance of 0.145 inch from the center and the tips were 0.035 inch above the top of the getter container.
  • the getter material contained 250 milligrams of barium and the getter was arranged and flashed in a 19 inch, deflection picture tube as shown in FIG. 1. While the amount of barium vaporized into the tube was the same as when no cover member was used, the
  • barium deposition on'the screen of the tube was sub-- other metals and alloys used in conventional getter devices.
  • a picture tube having a conical funnel portion and a screen surface
  • a getter device having an annular channel containing getter material arranged adjacent to the funnel portion of the picture tube, the annular channel being sealed at its bottom adjacent the funnel portion of the picture tube, the upper portion of the annular channel being directed toward the interior of the picture tube
  • a covering member attached to the getter device providing essentially total closure of central segments of the upper portion of the annular channel, with openings to the annular channel being provided only at opposed locations oriented away from the screen surface of the picture tube and upwardly slanting deflecting members attached to the getter device and arranged above said openings whereby getter material is expelled from the annular channel is directed away from the getter device.
  • the covering member comprises an annular portion of substantially the same diameter as the annular channel having upturned outer edges which form the deflecting members and provide the openings to the annular channel.
  • a picture tube having a conical funnel portion and a screen surface
  • a getter device arranged adjacent to the funnel portion of the picture tube comprising a cylindrically shaped metal receptacle having an open top and having an up-raised bottom portion which defines an annular channel in said receptacle, getter material within said annular channel and a recessed circular metal cover member overlying the channel of said receptacle and attached thereto at its up-raised bottom portion, opposed segments of the cover member at locations oriented away from the screen surface being turned upward to permit exit of getter material from the receptacle.

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

A GETTER ASSEMBLY FOR USE IN A TELEVISION PICTURE TUBE COMPRISING A RECEPTACLE CONTAINING GETTER MATERIAL ARRANGED ON THE INSIDE SURFACE OF THE FUNNEL PORTION OF THE PICTURE TUBE AND HAVING A COVER MEMBER WHICH IS PROVIDED WITH DEFLECTING MEMBERS SO AS TO PREVENT UNDESIRED DEPOSITION OF GETTER MATERIAL WITHIN THE PICTURE TUBE.

Description

United States Patent Reash [45] J GETTER DEVICE Prima Examiner-R0 Lake 75 Inventor: Cl W.R h F P k. U y l 3:; eas alrvlew ar Assistant Examiner-Darwin R. l-lostetter Attorney-Paul A. Rose et al. [73 Assignee: Union Carbide Corporation,
New YOl'k, N.Y. [57] ABSTRACT Filed! 30, 1972 A getter assembly for use in a television picture tube A l N 239 617 comprising a receptacle containing getter material ar- [211 pp 0 ranged on the inside surface of the funnel portion of the picture tube and having a cover member which is U.S. Clp ovided deflecting members so as to prevent uni5 1 Int. Cl. 1101j 19/70 d i d d iti n of getter material within the picture [58] Field of Search 313/174; 417/48 [56] References Cited 3 Claims, 10 Drawing Figures UNITED STATES PATENTS 1/1971 Palsha 313/174 PATENTEUJUM 1 1 m4 amelvae 27 ggF/G: 5 I\ GETTER DEVICE This invention relates to an improved getter assembly for use in television picture tubes. More particularly, the present invention is directed to a getter assembly which minimizes deposition of the getter material at undesirable locations within the picture tube.
In the manufacture of television picture tubes the necessary vacuum is obtained through the use of getters, ordinarily barium getters, whereby barium is flashed or vaporized within the picture tube. The vaporized getter material, e.g., barium, soaks and reacts with the residual gases in the picture tube and removes them as low vapor pressure solid condensates. Also, the barium which is deposited on the interior surfaces of the picture tube continues to sorb gases which may be liberated during use of the picture tube.
In the past, getter devices, commonly in the form of ring shaped containers, were mounted in the neck portion of the picture tube. However, for various practical reasons, it is now the usual practice to position the getter container on the inside surface of the funnel portion of the picture tube. This arrangement has various advantages, however, a significant disadvantage is the deposition of getter material, e.g., barium, on the screen of the picture tube and at other locations where such deposition is disadvantageous. When the barium deposition on the picture screen is excessive, the light out put is reduced with obvious disadvantages. Also, excessive barium deposition on the electron gun, at the junction of the picture tube funnel and screens, and on the tube funnel adjacent the getter are disadvantageous as well known.
It is therefore an object of the present invention to provide a getter assembly whereby the deposition of getter material on the screen of a television picture tube and other sensitive locations is minimized.
Other objects will be apparent from the following description and claims taken in conjunction with the drawing in which FIG. 1 shows somewhat schematically a conventional picture tube and electron gun arrangement together with a known getter support which incorporates the novel shielded getter arrangement of the present invention FIG. 1A is a cross-sectional view of the device of FIG. 1
FIG. 2 shows a plan view of the bottom portion of a solid center getter container FIG. 3 shows and elevation view of the device of FIG.
FIG. 4- shows a plan view of a getter cover for use in conjunction with the device of FIG. 2
FIG. 5 is an elevation view of the getter cover of FIG. 4
FIG. 6 is a plan view of the assembled device of FIG. 7
FIG. 7 and 7A show an assembly of the devices of FIGS. 2 and 3 FIG. 8 is an enlarged fragmented sectional view of the device of the present invention.
A getter arrangement in accordance with the present invention comprises, in combination, a picture tube havinga conical funnel portion and a screen surface, a getter device having an annular channel containing getter material arranged adjacent to the funnel portion of the picture tube, the annular channel being sealed at its bottom adjacent the funnel portion of the picture tube, the upper portion of the annular channel being directed toward the interior of the picture tube a covering member attached to the getter device providing essentially total closure of central segments of the upper portion of the annular channel, with openings to the annular channel being provided only at opposed locations oriented away from the screen surface of the picture tube and upwardly slanting deflecting members attached to the getter device and arranged above said openings whereby getter material expelled from the annular channel is directed away from the getter device.
With reference to the drawing, FIG. 1 shows a conventional television picture tube 1 having a funnel portion 3', a neck portion 5, and a screen 7, e.g., a tri-color screen formed by techniques well known in the art.
An electron gun, shown schematically at 9, is located within the tube neck 5. An elongated spring member 11, attached to electron gun 9 and getter assembly 13, together with attached wire support members 14, maintains getter assembly 13 in a position adjacent to the funnel portion 3 in a well known manner. Getter assembly 13 includes a cover member 15, in accordance with the present invention, which is hereinafter more fully described.
In operation, conventional R-F heating coil l7 flashes the getter material in getter assembly 13 in a known manner whereby the vaporized getter, e.g., barium is expelled into the picture tube I as hereinafter described.
With reference to FIGS. 2 and 3, a cylindrical getter container suitably formed of stainless steel, is shown at 19 having an up-raised bottom portion 21 which forms an annular channel 23 in which is pressed a getter material 24 in the usual manner. For television picture tubes the getter material may be, for example, 1,000 mg of a 25 per cent barium 25 per cent aluminum, 50 puent nickel exothermic alloy yielding about 225 mg of barium upon flashing. As is well known, the flashing of the getter requires heating to a high temperature, about l,300 C, to vaporize the barium or whatever getter material is used. In the present invention, the vaporized getter material is directed into the picture tube in a particular manner utilizing the cover member illustrated in FIGS. 4 and 5. The cover member 15, suitably of stainless steel, is shown to be circular in shape having flat portions 25, a depressed center portion 27 and upturned, opposed segments 29. In the assembly of the present invention as illustrated in FIGS. 7 and 7A, cover member 15 is placed over getter container 19 and is affixed thereto, e.g., by a spot weld indicated at 31 in FIGS. 7 and 7A. Cover member 15 fits closely within container 19 and is configured such that the flat portions 25 cover and effectively seal the central segments of the upper surface of the channel 23 which otherwise would have line of sight access to the parts of the tube envelope where a minimization of the barium deposit is desired, preferably a major portion. The upturned segments 29 establish openings 32 to the channel 23 whereby vaporized getter material expelled from the channel 23 is permitted to enter the picture tube 1.
As can be seen with reference to FIGS. 1 and 1A getter assembly 13 is arranged in the picture tube 1 so that the chordal upturned segments 29 are at locations 33 which are oriented away from the picture tube screen 7, i.e., the openings 32 are in line with the circumference of the conical funnel portion as indicated at 35. Another way of describing the position of openings 31 is that they are arranged in line transverse to the slope 37 of the funnel portion which passes through the getter device.
With the getter assembly 13 arranged as indicated, upon flashing, vaporized getter material is expelled from annular channel 23 through predetermined openings 31 and the vaporized getter exiting container 19 is deflected by segments 29 in a direction away from the picture screen 7 and also away from electron gun 9 as can be seen in FIG. 1A.
The arrangement of segments 29, and the shielding provided by flat portions 25, directs the deposit of getter material away from the tube screen 7 and electron gun 9. Also, as can be readily seen from FIG. 8, with cover member recessed in getter container 19 as shown, the vertical extended portion 40 of getter container 19 prevents the formation of a heavy deposit of getter material on the funnel next to the getter assembly 13, which could lead to ionization or cracking of the glass.
In the present invention, the slant angle of segments 29 can suitably range from about 15" to 30 and by variation of this angle, and with adjustment of the height of the extended portion 40 of getter container 19, getter deposition on screen 7 can be readily controlled and thereby minimized.
In some instances, to avoid over-heating by RF dur-.
ing flashing, verysmall slots or holes, 0.020 inch thick and less, may be provided in the getter cover as indicated at 40 and 42 in FIG. 4.
By way of specific example, a getter assembly was made with a container of 305 stainless steel having an outer diameter of 0.765 inch. The height of the con tainer sides was 0.165 inch, the width of the getter channel was 0.222 inch and the height of the up raised center portion was 0.085 inch. The cover for the getter container was formed from 305 stainless steel and had a diameter of 0.745 inch. The flat portion of the cover was recessed 0.029 inch below the top of the container side and the deflecting members were slanted upward at an angle of about 20 at a distance of 0.145 inch from the center and the tips were 0.035 inch above the top of the getter container.
The getter material contained 250 milligrams of barium and the getter was arranged and flashed in a 19 inch, deflection picture tube as shown in FIG. 1. While the amount of barium vaporized into the tube was the same as when no cover member was used, the
barium deposition on'the screen of the tube was sub-- other metals and alloys used in conventional getter devices.
What is claimed is:
1. In combination, a picture tube having a conical funnel portion and a screen surface, a getter device having an annular channel containing getter material arranged adjacent to the funnel portion of the picture tube, the annular channel being sealed at its bottom adjacent the funnel portion of the picture tube, the upper portion of the annular channel being directed toward the interior of the picture tube, a covering member attached to the getter device providing essentially total closure of central segments of the upper portion of the annular channel, with openings to the annular channel being provided only at opposed locations oriented away from the screen surface of the picture tube and upwardly slanting deflecting members attached to the getter device and arranged above said openings whereby getter material is expelled from the annular channel is directed away from the getter device.
2. A combination in accordance with claim 1 wherein the covering member comprises an annular portion of substantially the same diameter as the annular channel having upturned outer edges which form the deflecting members and provide the openings to the annular channel.
3. In combination, a picture tube having a conical funnel portion and a screen surface, a getter device arranged adjacent to the funnel portion of the picture tube comprising a cylindrically shaped metal receptacle having an open top and having an up-raised bottom portion which defines an annular channel in said receptacle, getter material within said annular channel and a recessed circular metal cover member overlying the channel of said receptacle and attached thereto at its up-raised bottom portion, opposed segments of the cover member at locations oriented away from the screen surface being turned upward to permit exit of getter material from the receptacle.
US00239617A 1972-03-30 1972-03-30 Getter device Expired - Lifetime US3816788A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US00239617A US3816788A (en) 1972-03-30 1972-03-30 Getter device
CA161,957A CA954180A (en) 1972-03-30 1973-01-24 Getter device
DE19732303749 DE2303749C3 (en) 1972-03-30 1973-01-26 Guiding screen for a getter device
JP1579073A JPS4916370A (en) 1972-03-30 1973-02-09
NL7301891.A NL161296C (en) 1972-03-30 1973-02-09 PICTURE TUBE WITH A GETTER HOLDER.
GB640773A GB1417247A (en) 1972-03-30 1973-02-09 Getter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00239617A US3816788A (en) 1972-03-30 1972-03-30 Getter device

Publications (1)

Publication Number Publication Date
US3816788A true US3816788A (en) 1974-06-11

Family

ID=22902946

Family Applications (1)

Application Number Title Priority Date Filing Date
US00239617A Expired - Lifetime US3816788A (en) 1972-03-30 1972-03-30 Getter device

Country Status (5)

Country Link
US (1) US3816788A (en)
JP (1) JPS4916370A (en)
CA (1) CA954180A (en)
GB (1) GB1417247A (en)
NL (1) NL161296C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979633A (en) * 1974-09-25 1976-09-07 Gte Sylvania Incorporated Directional getter attached to multi-apertured member
FR2351490A1 (en) * 1976-05-12 1977-12-09 Getters Spa DEVICE FOR THE ABSORPTION OF RESIDUAL GASES IN VACUUM VESSELS
DE2727560A1 (en) * 1976-11-24 1978-06-01 Union Carbide Corp IMPROVED METHOD FOR MACHINING CATHODE BEAM TUBES
US4134041A (en) * 1976-03-12 1979-01-09 S.A.E.S. Getters S.P.A. Getter comprising U-shaped channel ring having two ring holders containing getter material
US4323818A (en) * 1978-12-07 1982-04-06 Union Carbide Corporation Getter construction for reducing the arc discharge current in color TV tubes
US4489251A (en) * 1980-07-11 1984-12-18 Thomson-Csf Microchannel image intensifier tube and image pick-up system comprising a tube of this type
US4713578A (en) * 1982-12-15 1987-12-15 North American Philips Consumer Electronics Corp. Getter assembly with diffusion directing structure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54175262U (en) * 1978-05-30 1979-12-11
IT1153657B (en) * 1982-11-23 1987-01-14 Getters Spa Getter for CRTs with support mechanism having integral portions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS432103Y1 (en) * 1964-10-19 1968-01-29

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3979633A (en) * 1974-09-25 1976-09-07 Gte Sylvania Incorporated Directional getter attached to multi-apertured member
US4134041A (en) * 1976-03-12 1979-01-09 S.A.E.S. Getters S.P.A. Getter comprising U-shaped channel ring having two ring holders containing getter material
FR2351490A1 (en) * 1976-05-12 1977-12-09 Getters Spa DEVICE FOR THE ABSORPTION OF RESIDUAL GASES IN VACUUM VESSELS
US4101247A (en) * 1976-05-12 1978-07-18 S.A.E.S. Getters S.P.A. Getter device with improved support member
US4214184A (en) * 1976-05-12 1980-07-22 S.A.E.S. Getters S.P.A. Getter comprising U-shaped, parallel, linear channels containing getter material
DE2727560A1 (en) * 1976-11-24 1978-06-01 Union Carbide Corp IMPROVED METHOD FOR MACHINING CATHODE BEAM TUBES
US4323818A (en) * 1978-12-07 1982-04-06 Union Carbide Corporation Getter construction for reducing the arc discharge current in color TV tubes
US4489251A (en) * 1980-07-11 1984-12-18 Thomson-Csf Microchannel image intensifier tube and image pick-up system comprising a tube of this type
US4713578A (en) * 1982-12-15 1987-12-15 North American Philips Consumer Electronics Corp. Getter assembly with diffusion directing structure

Also Published As

Publication number Publication date
GB1417247A (en) 1975-12-10
NL7301891A (en) 1973-10-02
DE2303749A1 (en) 1973-10-11
CA954180A (en) 1974-09-03
DE2303749B2 (en) 1977-03-10
NL161296C (en) 1980-01-15
NL161296B (en) 1979-08-15
JPS4916370A (en) 1974-02-13

Similar Documents

Publication Publication Date Title
US3816788A (en) Getter device
US2131204A (en) Indirectly heated thermionic cathode
US3385420A (en) Getter devices
US3018398A (en) X-ray generator
US3669567A (en) Gettering
US2008066A (en) Gas or vapor discharge tube
US5118988A (en) High yield wide channel annular ring shaped getter device
US3996488A (en) Getter device with deflector
US3560788A (en) R-f energizable, pan-shaped getter for television tube
US4145162A (en) Getter device and method of use
US2341483A (en) Getter for electron discharge tubes
US4029987A (en) Wide channel getter device
US2184939A (en) Weld splash shield
US3428168A (en) Getter construction
US3225911A (en) Ring-shaped getter with top deflector, for improving and/or keeping up vacuum in electronic tubes
US3005123A (en) Electron gun construction
US6071080A (en) Vacuum device having a getter device
US5397958A (en) Getter device and inner shield for color braun tube
US3973816A (en) Method of gettering a television display tube
US4713578A (en) Getter assembly with diffusion directing structure
US4407657A (en) Gettering device and method
US3555222A (en) Vacuum switch with cylindrical guide means and annular field deflector means
US3207295A (en) Getter container
US5541474A (en) Getter spring assembly for a color cathode-ray tube
US3436583A (en) Electron gun

Legal Events

Date Code Title Description
AS Assignment

Owner name: MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MOR

Free format text: MORTGAGE;ASSIGNORS:UNION CARBIDE CORPORATION, A CORP.,;STP CORPORATION, A CORP. OF DE.,;UNION CARBIDE AGRICULTURAL PRODUCTS CO., INC., A CORP. OF PA.,;AND OTHERS;REEL/FRAME:004547/0001

Effective date: 19860106

AS Assignment

Owner name: UNION CARBIDE CORPORATION,

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:MORGAN BANK (DELAWARE) AS COLLATERAL AGENT;REEL/FRAME:004665/0131

Effective date: 19860925

AS Assignment

Owner name: GETTERS CORPORATION OF AMERICA, A CORP. OF DE.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:UNION CARBIDE CORPORATION;REEL/FRAME:004817/0868

Effective date: 19870901

AS Assignment

Owner name: SAES GETTERS SPA, ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GETTERS CORPORATION OF AMERICA;REEL/FRAME:005456/0478

Effective date: 19900927