Patent US3848207A successfully refreshed from Google Patents.
US3848207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting assembly for a convergence coil
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1974-02-01
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Granted: 1974-11-12
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Expires: 1994-02-01
Abstract
Abstract A convergence coil assembly primarily for use with multigun cathode ray tubes and for mounting on a printed circuit board in which resilient mounting posts permit radial movement of the convergence coil assembly but limits skew and axial movement. A compact, economical supporting structure is shown, as well as a unique means for containing a shorting bar and for retaining the permanent magnet which is used for static convergence adjustment.
Inventors
- 👤 R Bussey
- 👤 J Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:51
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J29/702; H01F; H01F29/00; H01F29/14; H01F29/143; H01F7/00; H01F7/06; H01F7/20; H01J2229/00; H01J2229/56; H01J2229/568; H01J2229/5681; H01J2229/5687
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
208 words
A convergence assembly for use with a cathode ray tube and for mounting on a printed circuit board comprising; a supporting structure having a lower portion for mounting proximate to a cathode ray tube neck and an upper portion for mounting radially distant from a cathode ray tube neck, magnetic flux producing means contained by the supporting structure, mounting means including a lower mounting lug pair extending from the lower portion of the supporting means which is resilient in the radial and skew directions and substantially rigid in the axial direction of a cathode ray tube neck and having a mounting portion for inserting into a printed circuit board, and an upper mounting lug pair extending from the upper portion of the supporting means which iS resilient in the radial direction of a cathode ray tube neck and having a mounting portion for inserting into a printed circuit board, whereby upon assembly to a cathode ray tube neck the convergence assembly being mounted on a printed circuit board will be slightly movable with respect to the printed circuit board in the radial direction and slightly movable in the skew direction only at its portion near to the cathode ray tube and will be immovable in the axial direction.
Claim 2
Dependent Claim
208 words
A convergence assembly for use with a cathode ray tube and for mounting on a printed circuit board comprising; a supporting structure having a lower portion for mounting proximate to a cathode ray tube neck and an upper portion for mounting radially distant from a cathode ray tube neck, magnetic flux producing means contained by the supporting structure, mounting means including a lower mounting lug pair extending from the lower portion of the supporting means which is resilient in the radial and skew directions and substantially rigid in the axial direction of a cathode ray tube neck and having a mounting portion for inserting into a printed circuit board, and an upper mounting lug pair extending from the upper portion of the supporting means which iS resilient in the radial direction of a cathode ray tube neck and having a mounting portion for inserting into a printed circuit board, whereby upon assembly to a cathode ray tube neck the convergence assembly being mounted on a printed circuit board will be slightly movable with respect to the printed circuit board in the radial direction and slightly movable in the skew direction only at its portion near to the cathode ray tube and will be immovable in the axial direction.
Claim 3
Dependent Claim
154 words
The convergence assembly of claim 1 wherein the upper mounting lugs further comprise; a pair of resilient metal members each having a flexing portion extending in a radial plane outwardly from the supporting structure on opposite sides of and normal to the radial axis and adapted to be secured to a printed circuit board thereby permitting resilient movement of the assembly in the radial direction relative to the cathode ray tube, by flexing of the flexing portions, and the lower mounting lugs further comprise; a pair of resilient metal members having a flexing portion extending generally parallel to the axis of a cathode ray tube from the supporting structure on opposite sides of and normal to the radial axis and adapted to be secured to a printed circuit board thereby permitting resilient movement of the assembly in the radial and skew directions relative to the cathode ray tube by flexing of the flexing portions.
Claim 4
Dependent Claim
51 words
The convergence assembly of claim 2 wherein the lugs are resilient conductive wire and are electrically connected to the magnetic flux producing means and the terminal end of each wire is bent back upon itself to provide a larger post to fit in a mounting hole in a printed circuit board.
Claim 5
Dependent Claim
40 words
The convergence assembly of claim 1 wherein the support structure has a generally rectangular shape at its upper and lower portions and the lower mounting lugs extend from opposite shorter sides and the upper lugs extend from opposite corners thereof.
Claim 6
Dependent Claim
39 words
The convergence assembly of claim 1 wherein the mounting lugs are of a resilient conductive metal and are electrically connected to the magnetic flux producing means and have means for connecting them to conductors on a printed circuit board.
Claim 7
Dependent Claim
96 words
The convergence assembly of claim 1 wherein the magnetic flux producing means comprises; L shaped core members assembled in a U formation having generally parallel first legs extending for contact with the neck of a cathode ray tube abutting second legs forming the bight of the U formation, windings associated with the core members for supplying an electromagnetic flux field to the cathode ray tube; and bobbin means surrounding at least the parallel first legs of the L shaped core members for supporting the core members and having the windings thereupon to induce the magnetic flux.
Claim 8
Dependent Claim
154 words
The convergence assembly of claim 6 wherein the upper mounting lugs further comprise a pair of resilient metal members each having a flexing portion extending outwardly in a radial plane from the bobbin means on opposite sides of and normal to the radial axis and adapted to be secured to a printed circuit board thereby permitting resilient movement of the assembly in the radial direction relative to the cathode ray tube, by flexing of the flexing portions, and the lower mounting lugs further comprise a pair of resilient metal members having a flexing portion extending generally parallel to the axis of a cathode ray tube from the bobbin means on opposite sides of and normal to the radial axis and adapted to be secured to a printed circuit board thereby permitting resilient movement of the assembly in the radial and skew directions relative to the cathode ray tube by flexing of the flexing portions.
Claim 9
Dependent Claim
50 words
The convergence assembly of claim 7 wherein the lugs are resilient conductive wire and are electrically connected to the magnetic flux producing means and the terminal end of each wire is bent backupon itself to provide a larger post to fit in a mounting hole in a printed circUit board.
Claim 10
Dependent Claim
25 words
The convergence assembly of claim 1 further comprising a printed circuit board to which the convergence assembly is mounted by means of the mounting lugs.
Claim 11
Dependent Claim
25 words
The convergence assembly of claim 8 further comprising a printed circuit board to which the convergence assembly is mounted by means of the mounting lugs.
Claim 12
Dependent Claim
40 words
The convergence assembly of claim 7 wherein the support structure has a generally rectangular shape at its upper and lower portions and the lower mounting lugs extend from opposite shorter sides and the upper lugs extend from opposite corners thereof.
Claim 13
Dependent Claim
57 words
The convergence assembly of claim 8 wherein the bobbin means comprises a lower generally rectangular flange having a slot on each outboard side thereof for receiving and seating the lower mounting lugs respectively therein and generally rectangular upper flange having a slot on each outboard side thereof for receiving and sealing the lower mounting lugs respectively therein.
Claim 14
Dependent Claim
62 words
The convergence assembly of claim 6 wherein the bobbin means comprises separate bobbin means on each parallel leg abutting centrally thereof and having a cavity in each upper flange portion which cavities meet to form an enclosed cavity and the parallel legs pass through the cavity and also having a shorting bar situated inside the cavity and surrounding the L core legs.
Claim 15
Dependent Claim
45 words
The convergence assembly of claim 13 wherein the bobbin means comprises a first bobbin means containing vertical windings and having the flanges thereon and second bobbin means containing horizontal windings being assembled on the L core legs inside a portion of the first bobbin means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |