US3376451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shadow mask and magnetic shield unitary construction for color tv picture tubes
Assignee: Buckbee Mears Co
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Filing: 1966-09-12
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Granted: 1968-04-02
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Expires: 1986-09-12
Abstract
No abstract record available.
Inventors
- 👤 Norman B Mears
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:41
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
FOR A COLOR TV PICTURE TUBE, IN COMBINATION: A THIN METALLIC SHADOW MASK CONTAINING A MYRIAD OF MINIATURE APERTURES THROUGH WHICH ELECTRON BEAMS TRAVEL FROM ELECTRON GUNS AT THE REAR OF THE PICTURE TUBE TO THE SCREEN AT THE FACE OF THE PICTURE TUBE; SAID MASK BEING SHAPED TO CONFORM GENERALLY TO THE INSIDE OF THE PICTURE TUBE BULB FOR ALLOWING THE ELECTRON BEAMS TO STRIKE APPROPRIATE SPOTS ON THE FACE IN PROPER FOCUS; AND A FUNNEL-SHAPED METALLIC SHIELD EXTENDING REARWARD FROM SAID MASK, THE BASE OF THE SHIELD BEING RIGIDLY ATTACHED TO THE PERIPHERY OF SAID SHADOW MASK FOR STRENGTHENING THE MASK TO MAKE IT SUBSTANTIALLY INFLEXIBLE.
Claim 2
Dependent Claim
108 words
FOR A COLOR TV PICTURE TUBE, IN COMBINATION: A THIN METALLIC SHADOW MASK CONTAINING A MYRIAD OF MINIATURE APERTURES THROUGH WHICH ELECTRON BEAMS TRAVEL FROM ELECTRON GUNS AT THE REAR OF THE PICTURE TUBE TO THE SCREEN AT THE FACE OF THE PICTURE TUBE; SAID MASK BEING SHAPED TO CONFORM GENERALLY TO THE INSIDE OF THE PICTURE TUBE BULB FOR ALLOWING THE ELECTRON BEAMS TO STRIKE APPROPRIATE SPOTS ON THE FACE IN PROPER FOCUS; AND A FUNNEL-SHAPED METALLIC SHIELD EXTENDING REARWARD FROM SAID MASK, THE BASE OF THE SHIELD BEING RIGIDLY ATTACHED TO THE PERIPHERY OF SAID SHADOW MASK FOR STRENGTHENING THE MASK TO MAKE IT SUBSTANTIALLY INFLEXIBLE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |