US4277966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a foraminous plate
Assignee: Raytheon Co
•
Filing: 1979-06-04
•
Granted: 1981-07-14
•
Expires: 1999-06-04
Abstract
Abstract A method is shown to make a relatively thick foraminous plate wherein the inside of each one of the foramina is treated as desired, the disclosed method comprising the steps of working a strip of a metallic or plastic foil to form transverse grooves, treating the worked strip to cause the surfaces of such grooves to have desired qualities and then rolling the strip (or stacking portions thereof) to form the desired foraminous plate.
Inventors
- 👤 Werner R. Rambauske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:51
CPC Classifications
B; B23; B23P; B23P15/00; B23P15/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
The method of fabricating a channelplate with a plurality of foramina extending therethrough, each one of such foramina defining an optical path, such method comprising the steps of: (a) scribing a strip of a metallic foil to form a plurality of parallel indentations across the width of such strip, the number of such identations being equal to the desired number of foramina, each having a length equal to the width of such foil; (b) treating the surfaces of the plurality of indentations and the strip to attain a desired optical characteristic of the walls of each one of the foramina; and (c) winding the treated strip on a bobbin of appropriate shape finally to form a coiled channelplate with foramina defined by said parallel indentations extending therethrough, such foramina being the only openings in such plate for the passage of optical energy therethrough.
Claim 2
Independent Claim
143 words
The method of fabricating a channelplate with a plurality of foramina extending therethrough, each one of such foramina defining an optical path, such method comprising the steps of: (a) scribing a strip of a metallic foil to form a plurality of parallel indentations across the width of such strip, the number of such identations being equal to the desired number of foramina, each having a length equal to the width of such foil; (b) treating the surfaces of the plurality of indentations and the strip to attain a desired optical characteristic of the walls of each one of the foramina; and (c) winding the treated strip on a bobbin of appropriate shape finally to form a coiled channelplate with foramina defined by said parallel indentations extending therethrough, such foramina being the only openings in such plate for the passage of optical energy therethrough.
Claim 3
Dependent Claim
31 words
The method as in claim 1 wherein treating is accomplished by rendering the surfaces of the plurality of parallel indentations, and the strip of metallic foil, substantially nonreflective to optical energy.
Claim 4
Dependent Claim
31 words
The method as in claim 1 wherein treating is accomplished by applying a material having a high coefficient of secondary emission at least to the surfaces of the plurality of indentations.
References Cited (Backward Citations)
US2969585A
Cited
US3027628A
Cited
US3391969A
Cited
US3581389A
Cited
US3905096A
Cited
US4068366A
Cited
US4183664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |