Patent US4638219A successfully refreshed from Google Patents.
US4638219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for adjusting the position of a deflector on a television tube, particularly a color tube
Assignee: Videocolor
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Filing: 1984-04-23
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Granted: 1987-01-20
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Expires: 2004-04-23
Abstract
Abstract An apparatus for adjusting the position of the deflector of a television tube, particularly a color tube, especially so that the tube deflector assembly may become autoconvergent. The apparatus comprises a platform movable in accordance with n degrees of freedom and n elements such as arms, each of which has its displacement controlled in accordance with only one degree of freedom, for example a simple translatory displacement in order to assure the mobility of the platform in accordance with the n degrees of freedom.
Inventors
- 👤 Claude Pons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:53
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/44
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A deflection yoke adjustment apparatus for a cathode ray tube comprising: a platform having a central opening therein for receiving a deflection yoke of a tube installed in a housing; pairs of connection points located on the platform and defining a symmetrical closed geometric pattern, each corner thereof having a pair of connection points; a plurality of arms connected at first ends thereof to corresponding connection points in oblique angular inclination to a rear surface of the platform to create a substantially symmetrical tapered space in back of the yoke; actuating means secured to the housing and connected to second ends of respective arms for selectively adjusting the positions of the arms and, hence, the connected platform; and an electrical connector connected to the tube and independent of mechanical contact with the platform; wherein the inclination of the arms and symmetrical closed pattern spatially distributes stress forces evenly in the arms as well as generating a large workable enlarging tapered space behind the tube for facilitating connection and removal of the connector from the tube.
Claim 2
Dependent Claim
175 words
A deflection yoke adjustment apparatus for a cathode ray tube comprising: a platform having a central opening therein for receiving a deflection yoke of a tube installed in a housing; pairs of connection points located on the platform and defining a symmetrical closed geometric pattern, each corner thereof having a pair of connection points; a plurality of arms connected at first ends thereof to corresponding connection points in oblique angular inclination to a rear surface of the platform to create a substantially symmetrical tapered space in back of the yoke; actuating means secured to the housing and connected to second ends of respective arms for selectively adjusting the positions of the arms and, hence, the connected platform; and an electrical connector connected to the tube and independent of mechanical contact with the platform; wherein the inclination of the arms and symmetrical closed pattern spatially distributes stress forces evenly in the arms as well as generating a large workable enlarging tapered space behind the tube for facilitating connection and removal of the connector from the tube.
Claim 3
Dependent Claim
30 words
The structure set forth in claim 1 wherein the geometric pattern is an equilateral triangle, and further wherein a pair of arms is connected at each corner of the triangle.
Claim 4
Dependent Claim
33 words
An apparatus according to claim 1, wherein each arm comprises a rigid rod having a first extremity articulated to the platform and a second extremity articulated to a device performing simple translatory displacements.
Claim 5
Dependent Claim
28 words
An apparatus according to claim 3, wherein each arm further comprises a strong and flexible rod for articulation, the articulated rod forming a swivel joint free from play.
Claim 6
Dependent Claim
53 words
An apparatus according to claim 1, wherein the actuating means comprises: a stepping motor for effecting each of the arms to move along a single degree of freedom, the stepping motor driving a screw which entrains a piston having an internal screw-thread, the piston being guided so that it is movable only translationally.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |