US4333034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grid structure for color cathode ray tube
Assignee: Sony Corp
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Filing: 1980-04-14
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Granted: 1982-06-01
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Expires: 2000-04-14
Abstract
Abstract A grid structure for a color cathode ray tube comprises a substantially rectangular, one-piece frame consisting of a pair of first opposed frame portions and a pair of second opposed frame portions orthogonally related to the first frame portions and being integral with the latter at ends thereof, and grid elements secured to the first frame portions and extending therebetween generally parallel to the second frame portions in a longitudinally stressed condition, the second frame portions having at least recesses therein for enhancing the resilient bending thereof under loads applied to the first frame portions in directions urging the latter toward each other.
Inventors
- 👤 Akio Ohgoshi
- 👤 Akira Nakayama
- 👤 Yoshihiro Tsukamura
- 👤 Takehisa Natori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:56
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; D; D05; D05B; D05B3/00; D05B3/02; D05B47/00; H01J2229/00; H01J2229/07; H01J2229/0722; H01J2229/0727; H01J2229/075; H01J2229/0755; H01J2229/0761; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49867; Y10T29/49869
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
100 words
A grid structure for a color cathode ray tube comprising a substantially rectangular frame consisting of a pair of first opposed frame portions and a pair of second opposed frame portions orthogonally related to said first frame portions and being integral with the latter at ends thereof, and grid elements secured to said first frame portions and extending therebetween generally parallel to said second frame portions in a longitudinally stressed condition, said second frame portions having recesses therein for enhancing the resilient bending thereof under loads applied to said first frame portions in directions urging the latter toward each other.
Claim 2
Dependent Claim
100 words
A grid structure for a color cathode ray tube comprising a substantially rectangular frame consisting of a pair of first opposed frame portions and a pair of second opposed frame portions orthogonally related to said first frame portions and being integral with the latter at ends thereof, and grid elements secured to said first frame portions and extending therebetween generally parallel to said second frame portions in a longitudinally stressed condition, said second frame portions having recesses therein for enhancing the resilient bending thereof under loads applied to said first frame portions in directions urging the latter toward each other.
Claim 3
Dependent Claim
47 words
A grid structure according to claim 1; in which there is one of said recesses in each of said second frame portions, and each of said recesses is symmetrical in respect to a line passing through the center of said frame perpendicular to said second frame portions.
Claim 4
Dependent Claim
54 words
A grid structure according to claim 1; in which there are a plurality of said recesses in each of said second frame portions, and said recesses in each of said second frame portions are symmetrically disposed in respect to a line passing through the center of the frame perpendicular to said second frame portions.
Claim 5
Dependent Claim
67 words
A grid structure according to claim 1; in which each of said frame portions is of generally L-shaped cross-section so that said frame includes a web having an edge surface at which said grid elements are secured to said first frame portions and a flange directed inwardly toward the center of the frame from said web at a margin of the latter remote from said edge surface.
Claim 6
Dependent Claim
29 words
A grid structure according to claim 4; in which said recesses for enhancing the resilient bending of said second frame portions open at said edge surface of the web.
Claim 7
Dependent Claim
47 words
A grid structure according to claim 5; in which there is one of said recesses in each of said second frame portions, and each of said recesses is symmetrical in respect to a line passing through said center of the frame perpendicular to said second frame portions.
Claim 8
Dependent Claim
54 words
A grid structure according to claim 5; in which there are a plurality of said recesses in each of said second frame portions, and said recesses in each of said second frame portions are symmetrically disposed in respect to a line passing through said center of the frame perpendicular to said second frame portions.
Claim 9
Dependent Claim
33 words
A grid structure according to claim 5; in which each of said second frame portions further has a slit therein substantially at said margin of the web from which said flange is directed.
Claim 10
Dependent Claim
34 words
A grid structure according to claim 8; further including a stiffening rib formed along each of said first frame portions at said web for resisting bending of said first frame portions by said loads.
Claim 11
Dependent Claim
34 words
A grid structure according to claim 5; further including a stiffening rib formed along each of said first frame portions at said web for resisting bending of said first frame portions by said loads.
Claim 12
Dependent Claim
65 words
A grid structure according to claim 1; in which said recesses for enhancing the resilient bending of said second frame portions open at an edge of the latter; and further including a slit extending longitudinally in each of said second frame portions, and a stiffening rib formed along each of said first frame portions for resisting bending of said first frame portions by said loads.
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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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |