US4161835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scatter shield for weapon aiming light
Assignee: United States Department of the Army
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Filing: 1977-12-16
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Granted: 1979-07-24
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Expires: 1997-12-16
Abstract
Abstract A scatter shield and weapon aiming light arrangement wherein the scatter eld is attached to an output end of an aiming light for narrowing the output light beam therefrom. The scatter shield is comprised of a cluster of thin walled, adjacent geometrically shaped tubular sections that are contained in a rigid outer shell and whose internal walls are finished with a flat black, nonreflective coating. The length-to-diameter ratio of the tubular sections of various scatter shields may be chosen to reduce light scatter from the light beam from over a wide angle of about 180° down to only a few degrees.
Inventors
- 👤 Lewis E. Lough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:29
CPC Classifications
F; F41; F41G; F41G1/00; F41G1/32; F41G1/34; F41G1/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A scatter shield assembly attached at the output end of an infrared aiming light for reducing the easily detectable wide angle scattered infrared light accompanying a narrow infrared aiming light beam emanated from said infrared aiming light yet readily allowing transmission of said infrared aiming light beam therethrough, the assembly comprising: a scatter shield comprised of a cluster of thin walled aluminum honeycomb, adjacent hexagonally shaped tubular sections that are evenly hollow throughout their entire length for allowing easy light transmission therethrough and having a length to diameter ratio of 10:1 with the diameter being measured across the flat sides of the hexagonal shape with said tubular sections being surrounded by a rigid outer shell wherein said scatter shield is finished with a dull flat black, non-reflective coating; and a screw threadably attachment means for attaching said scatter shield at said output end of said infrared aiming light wherein screw threads on the outside of said rigid outer shell mesh with screw threads on the inside of an extension of said output end of said infrared aiming light.
Claim 2
Dependent Claim
178 words
A scatter shield assembly attached at the output end of an infrared aiming light for reducing the easily detectable wide angle scattered infrared light accompanying a narrow infrared aiming light beam emanated from said infrared aiming light yet readily allowing transmission of said infrared aiming light beam therethrough, the assembly comprising: a scatter shield comprised of a cluster of thin walled aluminum honeycomb, adjacent hexagonally shaped tubular sections that are evenly hollow throughout their entire length for allowing easy light transmission therethrough and having a length to diameter ratio of 10:1 with the diameter being measured across the flat sides of the hexagonal shape with said tubular sections being surrounded by a rigid outer shell wherein said scatter shield is finished with a dull flat black, non-reflective coating; and a screw threadably attachment means for attaching said scatter shield at said output end of said infrared aiming light wherein screw threads on the outside of said rigid outer shell mesh with screw threads on the inside of an extension of said output end of said infrared aiming light.
References Cited (Backward Citations)
US1621224A
Cited
US1826004A
Cited
FR1190879A
Cited
US3318033A
Cited
US3405262A
Cited
US3863251A
Cited
US3867764A
Cited
US3919543A
Cited
US4048489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |