US3711802A - Toroid yoke with multi-part core - Google Patents

Toroid yoke with multi-part core Download PDF

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US3711802A
US3711802A US00178752A US3711802DA US3711802A US 3711802 A US3711802 A US 3711802A US 00178752 A US00178752 A US 00178752A US 3711802D A US3711802D A US 3711802DA US 3711802 A US3711802 A US 3711802A
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quasi
flared
deflection yoke
cylindrical portion
ray tube
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US00178752A
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C Torsch
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GTE Sylvania Inc
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GTE Sylvania Inc
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Assigned to NORTH AMERICAN PHILIPS CONSUMER ELECTRONICS CORP. reassignment NORTH AMERICAN PHILIPS CONSUMER ELECTRONICS CORP. ASSIGNS ITS ENTIRE RIGHT TITLE AND INTEREST, UNDER SAID PATENTS AND APPLICATIONS, SUBJECT TO CONDITIONS AND LICENSES EXISTING AS OF JANUARY 21, 1981. (SEE DOCUMENT FOR DETAILS). Assignors: GTE PRODUCTS CORPORATION A DE CORP.
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    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H01J29/764—Deflecting by magnetic fields only using toroidal windings

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  • ABSTRACT A cathode ray tube deflection yoke includes horizontal and vertical deflection windings toroidally wrapped about a multi-part core having a circular flared portion and a quasi-cylindrical portion affixed thereto and formed to telescope over the neck portion of a cathode ray tube.
  • toroid-wound deflection yokes include a core of magnetic material whereon the windings are disposed.
  • This core is usually substantially circular in shape and includes a central opening formed to telescope over the neck portion of a cathode ray tube.
  • the core normally includes a flared portion formed to substantially conform to the flared portion of the cathode ray tube.
  • deflection yoke configurations have been and still are suitable for many applications, it has been found that there are other applications wherein such configurations leave something to be desired.
  • the advent of the so-called 1 cathode ray tube resulted in a flared portion with A OBJECTS AND SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide an enhanced deflection yoke suitable for use with a cathode ray tube.
  • Another object of the invention is to provide an improved deflection yoke having enhanced electrical capabilities.
  • Still another object of the invention is to improve the core configuration of a toroid-wound deflection yoke.
  • a further object of the invention is to provide an improved deflection yok having a two-part core configuration.
  • a toroidwound deflection yoke having a longitudinal axis and a two-part core member with a flared portion and a quasi-cylindrical portion formed for attachment therebetween and telescopic relationship with the neck portionof a cathode ray tube.
  • FIG. 1 illustrates toroidwound deflection yoke having a two-part core member 5 with a flared portion 7 and a quasi-cylindrical portion 9.
  • the flared portion 7 has a first notched plastic member 11 affixed thereto and the quasi-cylindrical portion 9 has a second notched plastic member 13 attached thereto.
  • a plurality of wire turns 15 inthe form of horizontal and vertical deflection windings are toroidally wrapped about the core member 5 and first and second plastic members, 11 and 13 respectively, to provide a toroid-wound deflection yoke.
  • FIG. 2 illustrates the two-part core member 5 having a substantially circular flared portion 7 and quasi-cylindrical portion 9.
  • the flared portion 7 has a frontward edge portion 17 which includes a plurality of spaced notches 19 disposed on the horizontal and vertical axes.
  • the flared portion 7 is relatively thick as compared to the quasi-cylindrical portion 9 and contoured for contacting relationship on the interior surface 21 with the wire turns 15 and the flared portion of a cathode ray tube.
  • a first plastic member 11 includes a plurality of wire receiving slots 23 and pairs of forward, outward, and rearward extending ear members 25 disposed on the horizontal and vertical axes.
  • the ear members 25 are spaced and formed for reception by the spaced notches 19 of the flared portion 7 while the slots 23 are formed to receive the wire turns 15.
  • the quasi-cylindrical portion 9 includes a frontward edge portion 27 having a plurality of indentations 29 circumferentially spaced and disposed on the horizontal and vertical axes. Also, a plurality of inwardly ex-- tending protuberances 31 are disposed on the horizontal and vertical axes and in longitudinal alignment with the indentations 29. Moreover, a second plastic member 13 includes a plurality of grooves 33 formed to receive the wire turns 15 and circumferentially spaced tabs 35 disposed on the horizontal and vertical axes. This plastic member 13 is also formed for attachment to the quasi-cylindrical portion 9.
  • the spaced notches 19 of the flared portion 7 are longitudinally aligned with the indentations 29 of the quasi-cylindrical portion 9.
  • the flared portion 7 and quasi-cylindrical portion 9 are affixed to one another, by some form of adhesive for example, to provide a unitary structure.
  • compensation for slight structural deviations and tendency toward longitudinal misalignment can be made when affixing the flared and quasi-cylindrical.portions 7 and 9 to one another.
  • the ear members 25 of the first plastic member 11 are longitudinally aligned with the notches 19 of the flared portion 7 and attachment of the plastic member 11 to the flared portion 7 is effected.
  • the spaced tabs 35 of the second plastic member 13 are longitudinally aligned with the indentations 29 of the quasi-cylindrical portion 9 and the protuberances 31 and attachment of the plastic member 13 and quasicylindrical portion 9 'is effected.
  • the wire turns 15 are toroidally wrapped about the integral flared portion 7, quasi-cylindrical portion 9, first plastic member 11 and second plastic member 13.
  • the yoke includes a core member having a flared portion and a quasi-cylindrical portion formed to telescope over the neck portion of a cathode ray tube.
  • the core member may be in the form of a plurality of circular portions extending along the longitudinal axis and formed for attachment therebetween.
  • the individual portions of the core member are individually manufactureable which reduces the amount of material discarded when a defect is found and permits selective matching of the flared and quasi-cylindrical portions.
  • separate manufacture of the flared and quasicylindrical portions permits attainment of a relatively thick flared portion as compared with the quasi-cylindrical portion whereby the inductance to resistance ratio is enhanced thereby reducing operating temperature for a given field strength, improving sweep linearity, and reducing the current flow necessary to achieve a desired field strength in the area of the flared portion.
  • the individual portions permit utilization of the best pressing and firing conditions for each of the portions whereby homogeneous densification and reduced warpage is effected.
  • relatively large'core members can be constructed with available apparatus whereby the need for apparatus of greatly increased magnitude and capabilities, normally required for cores of increased size is obviated.
  • a deflection yoke for a cathode ray tube comprisa multiple-part core member having at least one substantially circular flared portion and at least one substantially quasi-cylindrical portion, said quasicylindrical portion affixed to the flared portion and formed to telescope over the neck portion of a cathode ray tube; and Y I horizontal and vertical deflection windings toroidally-wound about said core member.
  • deflection yoke of claim 1 wherein said quasicylindrical portion of said core member includes at least one protuberance extending inwardly toward said neck portion of said cathode ray tube and said circular flared portion includes a notch whereby alignment of said quasi-cylindrical portions of said yoke is effected '7 by alignment of said protuberance and notch.
  • said flared portion of said core member includes a frontward edge portion having pairs of diametrically opposed notches lying on the horizontal axis and on the vertical axis and said quasi-cylindrical portion of said core member includes a frontward edge portion having pairs of diametrically opposed notches lying on the horizontal axis and on the vertical axis and pairs of protuberances lying on the horizontal and on the vertical axes in alignment with said notches and extending inwardly toward said neck portion of said cathode ray tube.
  • he deflection yoke of claim 1 wherein said flared portion is of a thickness substantially greater than the thickness of said quasi-cylindrical portion and formed for contact with said toroidally-wound horizontal and vertical deflection windings whereby an improved inductance to resistance ratio is obtained.
  • a cathode ray tube deflection yoke comprising: a pair of horizontal and pair of vertical deflection windings; v
  • a multiple-part core member toroidally wrapped with said deflection windings, said core member including at least one circular flared portion and a quasicylindrical portion affixed to the flared portion and adapted to telescope over the neck portion of a cathode ray tube.
  • said quasi-cylindrical portion includes a plurality of notches and a plurality of protuberances extending inwardly toward said neck portion of said cathode ray tube with said notches and protuberances longitudinally aligned and said flared portion includes a notch formed for alignment with said protuberances and notches of said quasi-cylindrical portion.

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  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A cathode ray tube deflection yoke includes horizontal and vertical deflection windings toroidally wrapped about a multipart core having a circular flared portion and a quasicylindrical portion affixed thereto and formed to telescope over the neck portion of a cathode ray tube.

Description

" [75] Inventor:
[221' Filed:
United States Patent [191 Torsch TOROID YOKE WITH MULTl-PART CORE Charles Edward Torsch, Geneva, NY.
.73 Assignee: GTE Sylvania Incorporated Sept. 8, 1971 [21 Appl.No.: 178,752
[52] U.S. Cl ..335/2l0, 335/2l3 [51] Int. Cl ..H0lf 7/00 [58] Field of Search ..335/2l0, 2l3, 297; 313/75 [56] References Cited UNIT-ED STATES PATENTS 3,634,79 1 1973 Nakano ..335/2|3 x Jan. 16, 1973 2,821,671 1/1958 Kratz et al ..335/213 l/l972 Tsutsumi ..335/2l3 FOREIGN PATENTS OR APPLICATIONS 2,025,146 1/1971 Germany ..335/2l0 Primary Examiner-George l-larris Attorney-Norman J. OMalley et al.
[57] ABSTRACT A cathode ray tube deflection yoke includes horizontal and vertical deflection windings toroidally wrapped about a multi-part core having a circular flared portion and a quasi-cylindrical portion affixed thereto and formed to telescope over the neck portion of a cathode ray tube.
l0.Claims, 2 Drawing Figures PATENTEUJM 16 1915 3.71 1, 802
NVENTOR.
I CHARLES E. TORSCH lQ- 1 BY M 5. W
ATTORNEY TOROID YOKE WITH MULTI-PART CORE BACKGROUND OF THE INVENTION Generally, toroid-wound deflection yokes include a core of magnetic material whereon the windings are disposed. This core is usually substantially circular in shape and includes a central opening formed to telescope over the neck portion of a cathode ray tube. Moreover, the core normally includes a flared portion formed to substantially conform to the flared portion of the cathode ray tube.
Although the above-described deflection yoke configurations have been and still are suitable for many applications, it has been found that there are other applications wherein such configurations leave something to be desired. For example, the advent of the so-called 1 cathode ray tube resulted in a flared portion with A OBJECTS AND SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide an enhanced deflection yoke suitable for use with a cathode ray tube. Another object of the invention is to provide an improved deflection yoke having enhanced electrical capabilities. Still another object of the invention is to improve the core configuration of a toroid-wound deflection yoke. A further object of the invention is to provide an improved deflection yok having a two-part core configuration.
These and other objects, advantages and capabilities are achieved in one aspect of the invention by a toroidwound deflection yoke having a longitudinal axis and a two-part core member with a flared portion and a quasi-cylindrical portion formed for attachment therebetween and telescopic relationship with the neck portionof a cathode ray tube.
BRIEF DESCRIPTION OF THE DRAWINGS with the above-described drawings.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, FIG. 1 illustrates toroidwound deflection yoke having a two-part core member 5 with a flared portion 7 and a quasi-cylindrical portion 9. The flared portion 7 has a first notched plastic member 11 affixed thereto and the quasi-cylindrical portion 9 has a second notched plastic member 13 attached thereto. A plurality of wire turns 15 inthe form of horizontal and vertical deflection windings are toroidally wrapped about the core member 5 and first and second plastic members, 11 and 13 respectively, to provide a toroid-wound deflection yoke.
More specifically, the exploded view of FIG. 2 illustrates the two-part core member 5 having a substantially circular flared portion 7 and quasi-cylindrical portion 9. The flared portion 7 has a frontward edge portion 17 which includes a plurality of spaced notches 19 disposed on the horizontal and vertical axes. Moreover, the flared portion 7 is relatively thick as compared to the quasi-cylindrical portion 9 and contoured for contacting relationship on the interior surface 21 with the wire turns 15 and the flared portion of a cathode ray tube.
A first plastic member 11 includes a plurality of wire receiving slots 23 and pairs of forward, outward, and rearward extending ear members 25 disposed on the horizontal and vertical axes. The ear members 25 are spaced and formed for reception by the spaced notches 19 of the flared portion 7 while the slots 23 are formed to receive the wire turns 15.
The quasi-cylindrical portion 9 includes a frontward edge portion 27 having a plurality of indentations 29 circumferentially spaced and disposed on the horizontal and vertical axes. Also, a plurality of inwardly ex-- tending protuberances 31 are disposed on the horizontal and vertical axes and in longitudinal alignment with the indentations 29. Moreover, a second plastic member 13 includes a plurality of grooves 33 formed to receive the wire turns 15 and circumferentially spaced tabs 35 disposed on the horizontal and vertical axes. This plastic member 13 is also formed for attachment to the quasi-cylindrical portion 9.
In assembly, the spaced notches 19 of the flared portion 7 are longitudinally aligned with the indentations 29 of the quasi-cylindrical portion 9. Thereupon, the flared portion 7 and quasi-cylindrical portion 9 are affixed to one another, by some form of adhesive for example, to provide a unitary structure. Moreover, compensation for slight structural deviations and tendency toward longitudinal misalignment can be made when affixing the flared and quasi-cylindrical.portions 7 and 9 to one another.
Thereafter, the ear members 25 of the first plastic member 11 are longitudinally aligned with the notches 19 of the flared portion 7 and attachment of the plastic member 11 to the flared portion 7 is effected. Also, the spaced tabs 35 of the second plastic member 13 are longitudinally aligned with the indentations 29 of the quasi-cylindrical portion 9 and the protuberances 31 and attachment of the plastic member 13 and quasicylindrical portion 9 'is effected. Thereafter, the wire turns 15 are toroidally wrapped about the integral flared portion 7, quasi-cylindrical portion 9, first plastic member 11 and second plastic member 13.
Thus, there has been provided an enhanced deflection yoke suitable for use with a cathode ray tube. The yoke includes a core member having a flared portion and a quasi-cylindrical portion formed to telescope over the neck portion of a cathode ray tube. Moreover, it is obvious that the core member may be in the form of a plurality of circular portions extending along the longitudinal axis and formed for attachment therebetween.
Also, it can be readily understood that the individual portions of the core member are individually manufactureable which reduces the amount of material discarded when a defect is found and permits selective matching of the flared and quasi-cylindrical portions. Also, separate manufacture of the flared and quasicylindrical portions permits attainment of a relatively thick flared portion as compared with the quasi-cylindrical portion whereby the inductance to resistance ratio is enhanced thereby reducing operating temperature for a given field strength, improving sweep linearity, and reducing the current flow necessary to achieve a desired field strength in the area of the flared portion.
. Further, the individual portions permit utilization of the best pressing and firing conditions for each of the portions whereby homogeneous densification and reduced warpage is effected. More-over, relatively large'core members can be constructed with available apparatus whereby the need for apparatus of greatly increased magnitude and capabilities, normally required for cores of increased size is obviated.
While there has been shown and described what is at present considered the preferred embodiment of the invention, it will be obvious to those skilled in the art that various v changes and modifications may be made therein without departing from the scope of the invention as defined by the appended claims.
I claim:
1. A deflection yoke for a cathode ray tube comprisa multiple-part core member having at least one substantially circular flared portion and at least one substantially quasi-cylindrical portion, said quasicylindrical portion affixed to the flared portion and formed to telescope over the neck portion of a cathode ray tube; and Y I horizontal and vertical deflection windings toroidally-wound about said core member.
2. The deflection yoke of claim 1 wherein said quasicylindrical portion of said core member includes at least one protuberance extending inwardly toward said neck portion of said cathode ray tube and said circular flared portion includes a notch whereby alignment of said quasi-cylindrical portions of said yoke is effected '7 by alignment of said protuberance and notch.
3. The deflection yoke of claim 1 wherein said flared portion and said quasi-cylindrical portion each include a plurality of notches whereby alignment therebetween is effected.
4. The deflection yoke of claim 1 wherein said flared portion and said quasi-cylindrical portion each include a frontward edge portion and a rearward edge portion with said rearward edge portion of said flared portion in contacting relationship with said frontward edge portion of said quasi-cylindrical portion.
5. The deflection yoke of claim 1 wherein said flared portion of said core member includes a frontward edge portion having pairs of diametrically opposed notches lying on the horizontal axis and on the vertical axis and said quasi-cylindrical portion of said core member includes a frontward edge portion having pairs of diametrically opposed notches lying on the horizontal axis and on the vertical axis and pairs of protuberances lying on the horizontal and on the vertical axes in alignment with said notches and extending inwardly toward said neck portion of said cathode ray tube.
6. he deflection yoke of claim 1 wherein said flared portion is of a thickness substantially greater than the thickness of said quasi-cylindrical portion and formed for contact with said toroidally-wound horizontal and vertical deflection windings whereby an improved inductance to resistance ratio is obtained.
7. A cathode ray tube deflection yoke comprising: a pair of horizontal and pair of vertical deflection windings; v
a multiple-part core member toroidally wrapped with said deflection windings, said core member including at least one circular flared portion and a quasicylindrical portion affixed to the flared portion and adapted to telescope over the neck portion of a cathode ray tube.
8. The deflection yoke of claim 7 wherein said flared portion is of a thickness greater than said quasi-cylindrical portion.
9. The deflection yoke of claim 7 wherein said flared portion and quasi-cylindrical portion each include at least one notch whereby longitudinal alignment therebetween is efi'ected.
10. The deflection yoke of claim 7 wherein said quasi-cylindrical portion includes a plurality of notches and a plurality of protuberances extending inwardly toward said neck portion of said cathode ray tube with said notches and protuberances longitudinally aligned and said flared portion includes a notch formed for alignment with said protuberances and notches of said quasi-cylindrical portion.

Claims (10)

1. A deflection yoke for a cathode ray tube comprising: a multiple-part core member having at least one substantially circular flared portion and at least one substantially quasicylindrical portion, said quasi-cylindrical portion affixed to the flared portion and formed to telescope over the neck portion of a cathode ray tube; and horizontal and vertical deflection windings toroidally-wound about said core member.
2. The deflection yoke of claim 1 wherein said quasi-cylindrical portion of said core member includes at least one protuberance extending inwardly toward said neck portion of said cathode ray tube and said circular flared portion includes a notch whereby alignment of said quasi-cylindrical portions of said yoke is effected by alignment of said protuberance and notch.
3. The deflection yoke of claim 1 wherein said flared portion and said quasi-cylindrical portion each include a plurality of notches whereby alignment therebetween is effected.
4. The deflection yoke of claim 1 wherein said flared portion and said quasi-cylindrical portion each include a frontward edge portion and a rearward edge portion with said rearward edge portion of said flared portion in contacting relationship with said frontward edge portion of said quasi-cylindrical portion.
5. The deflection yoke of claim 1 wherein said flared portion of said core member includes a frontward edge portion having pairs of diametrically opposed notches lying on the horizontal axis and on the vertical axis and said quasi-cylindrical portion of said core member includes a frontward edge portion having pairs of diametrically opposed notches lying on the horizontal axis and on the vertical axis and pairs of protuberances lying on the horizontal and on the vertical axes in alignment with said notches and extending inwardly toward said neck portion of said cathode ray tube.
6. The deflection yoke of claim 1 wherein said flared portion is of a thickness substantially greater than the thickness of said quasi-cylindrical portion and formed for contact with said toroidally-wound horizontal and vertical deflection windings whereby an improved inductance to resistance ratio is obtained.
7. A cathode ray tube deflection yoke comprising: a pair of horizontal and pair of vertical deflection windings; a multiple-part core member toroidally wrapped with said deflection windings, said core member including at least one circular flared portion and a quasi-cylindrical portion affixed to the flared portion and adapted to telescope over the neck portion of a cathode ray tube.
8. The deflection yoke of claim 7 wherein said flared portion is of a thickness greater than said quasi-cylindrical portion.
9. The deflection yoke of claim 7 wherein said flared portion and quasi-cylindrical portion each include at least one notch whereby longitudinal alignment therebetween is effected.
10. The deflection yoke of claim 7 wherein said quasi-cylindrical portion includes a plurality of notches and a plurality of protuberances extending inwardly toward said neck portion of said cathode ray tube with said notches and protuberances longitudinally aligned and said flared portion includes a notch formed for alignment with said protuberances and notches of said quasi-cylindrical portion.
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801941A (en) * 1972-01-13 1974-04-02 Plessey Handel Investment Ag Coil winding
US4023129A (en) * 1975-04-14 1977-05-10 Rca Corporation Deflection yoke with non-radial conductors
US4246560A (en) * 1977-09-21 1981-01-20 Hitachi, Ltd. Self-converging deflection yoke
FR2481842A1 (en) * 1980-04-30 1981-11-06 Videocolor Extended deflection ring for CRT - has saddle shaped windings in two=part ferrite ring for self-convergent in line gun tube
FR2481843A1 (en) * 1980-04-30 1981-11-06 Videocolor Extended parabolic profile deflection ring for CRT - has saddle shaped windings defined by two plastics formers for easy production self-convergent in line tube deflection
DE3140434A1 (en) * 1980-10-13 1982-07-01 Denki Onkyo Co., Ltd., Tokyo Deflection yoke
EP0581586A1 (en) * 1992-07-28 1994-02-02 Murata Manufacturing Co., Ltd. Deflection yoke
US5465026A (en) * 1992-04-07 1995-11-07 Videocolor Deflection yoke with a core extension

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821671A (en) * 1953-03-18 1958-01-28 Rca Corp Deflection yoke
DE2025146A1 (en) * 1969-06-19 1971-02-04 N V Philips Gloeilampenfabrieken, Eindhoven (Niederlande) Deflection coil set
US3634796A (en) * 1969-03-28 1972-01-11 Matsushita Electric Ind Co Ltd Deflecting yoke
US3638152A (en) * 1969-06-19 1972-01-25 Matsushita Electric Ind Co Ltd Deflecting coils

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821671A (en) * 1953-03-18 1958-01-28 Rca Corp Deflection yoke
US3634796A (en) * 1969-03-28 1972-01-11 Matsushita Electric Ind Co Ltd Deflecting yoke
DE2025146A1 (en) * 1969-06-19 1971-02-04 N V Philips Gloeilampenfabrieken, Eindhoven (Niederlande) Deflection coil set
US3638152A (en) * 1969-06-19 1972-01-25 Matsushita Electric Ind Co Ltd Deflecting coils

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801941A (en) * 1972-01-13 1974-04-02 Plessey Handel Investment Ag Coil winding
US4023129A (en) * 1975-04-14 1977-05-10 Rca Corporation Deflection yoke with non-radial conductors
US4246560A (en) * 1977-09-21 1981-01-20 Hitachi, Ltd. Self-converging deflection yoke
FR2481842A1 (en) * 1980-04-30 1981-11-06 Videocolor Extended deflection ring for CRT - has saddle shaped windings in two=part ferrite ring for self-convergent in line gun tube
FR2481843A1 (en) * 1980-04-30 1981-11-06 Videocolor Extended parabolic profile deflection ring for CRT - has saddle shaped windings defined by two plastics formers for easy production self-convergent in line tube deflection
DE3140434A1 (en) * 1980-10-13 1982-07-01 Denki Onkyo Co., Ltd., Tokyo Deflection yoke
US5465026A (en) * 1992-04-07 1995-11-07 Videocolor Deflection yoke with a core extension
DE4309944B4 (en) * 1992-04-07 2005-02-24 Thomson Tubes & Displays S.A. Deflection yoke with a core extension
EP0581586A1 (en) * 1992-07-28 1994-02-02 Murata Manufacturing Co., Ltd. Deflection yoke

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Free format text: ASSIGNS ITS ENTIRE RIGHT TITLE AND INTEREST, UNDER SAID PATENTS AND APPLICATIONS, SUBJECT TO CONDITIONS AND LICENSES EXISTING AS OF JANUARY 21, 1981.;ASSIGNOR:GTE PRODUCTS CORPORATION A DE CORP.;REEL/FRAME:003992/0284

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Effective date: 19810708