US3736874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemiluminescent expulsion device
Assignee: United States Department of the Navy
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Filing: 1970-05-28
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Granted: 1973-06-05
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Expires: 1990-05-28
Abstract
Abstract An improved dispenser for disseminating chemiluminescent particles from the air in a concentrated signal pattern which increases signal utility in conditions of high background illumination.
Inventors
- 👤 R Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:29
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/46; F42B12/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
A device for disseminating chemiluminescent material from an airborne vehicle which consists essentially of: a. a hollow cylindrical casing having an integral end wall; b. a housing containing a fuse, a detonator and a gas generator charge hermetically secured to said end wall and projecting axially into said casing; c. a cup-shaped piston surrounding said housing and being secured to the inner walls of said casing by O-rings; d. an end cap closure secured by O-rings to the other end of said casing; e. a fin assembly consisting of a plurality of fins affixed to the outside of said end cap closure for stabilizing said casing in free fall from said airborne vehicle; and f. a chemiluminescent material consisting of 42.5 percent by weight of tetrakis(dimethylamino)ethylene, 15 percent by weight lithium chloride and 42.5 percent by weight polyethylene filling the space between said end closure and said piston; whereby gas pressure created upon the initiation of said gas generator ruptures said housing and forces said piston against said chemiluminescent material thereby unseating said closure and forcing the material out of the casing.
Claim 2
Independent Claim
182 words
A device for disseminating chemiluminescent material from an airborne vehicle which consists essentially of: a. a hollow cylindrical casing having an integral end wall; b. a housing containing a fuse, a detonator and a gas generator charge hermetically secured to said end wall and projecting axially into said casing; c. a cup-shaped piston surrounding said housing and being secured to the inner walls of said casing by O-rings; d. an end cap closure secured by O-rings to the other end of said casing; e. a fin assembly consisting of a plurality of fins affixed to the outside of said end cap closure for stabilizing said casing in free fall from said airborne vehicle; and f. a chemiluminescent material consisting of 42.5 percent by weight of tetrakis(dimethylamino)ethylene, 15 percent by weight lithium chloride and 42.5 percent by weight polyethylene filling the space between said end closure and said piston; whereby gas pressure created upon the initiation of said gas generator ruptures said housing and forces said piston against said chemiluminescent material thereby unseating said closure and forcing the material out of the casing.
References Cited (Backward Citations)
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Cited
US1791716A
Cited
US2327414A
Cited
US2741178A
Cited
US3311564A
Cited
US3360426A
Cited
US3558502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |