US3567986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode ray tube shadow mask supporting structure having straight springs mounted upon struck-out portions of the shadow mask frame
Assignee: GTE Sylvania Inc
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Filing: 1968-11-12
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Granted: 1971-03-02
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Expires: 1988-11-12
Abstract
Abstract A mounting arrangement for parallax barriers for use in color tubes wherein relatively flat leaf springs are utilized and are mounted upon a predetermined tension determining plane which is formed in sidewalls of the parallax barrier support frame.
Inventors
- 👤 Robert J Bowes Jr
- 👤 George R Kautz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:06
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/06; H01J29/07; H01J29/073; H01J2229/00; H01J2229/07; H01J2229/0722
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
79 words
A parallax barrier of the class described comprising: a fragile barrier portion; a substantially rigid peripheral frame structure having upstanding walls mounting said barrier portion substantially at its edge; a plurality of tension determining sections formed as struck-out portions projecting from said walls of said peripheral frame; and a plurality of substantially flat leaf springs having a predetermined tension when said barrier is operatively mounted each having one of their ends attached to one of said tension determining sections.
Claim 2
Dependent Claim
79 words
A parallax barrier of the class described comprising: a fragile barrier portion; a substantially rigid peripheral frame structure having upstanding walls mounting said barrier portion substantially at its edge; a plurality of tension determining sections formed as struck-out portions projecting from said walls of said peripheral frame; and a plurality of substantially flat leaf springs having a predetermined tension when said barrier is operatively mounted each having one of their ends attached to one of said tension determining sections.
Claim 3
Dependent Claim
24 words
The invention of claim 1 wherein said springs are attached to intermediate mounting members and said members are attached to said tension determining sections.
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |