US3817030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiant energy suppressor
Assignee: United States Department of the Army
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Filing: 1973-06-26
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Granted: 1974-06-18
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Expires: 1993-06-26
Abstract
Abstract Three concentric circular cylinders having a common vertical axis form an assembly which bolts to the louvered top of the heat engine enclosure of a military vehicle. The inner cylinder receives the tailpipe of the exhaust system and terminates in a horizontal plane above the tailpipe end. The outer cylinder terminates in a second horizontal plane above the first plane. The intermediate cylinder lies between the two horizontal planes. The annular spaces between the cylinders are open-ended for the upward flow of cooling air through the spaces. The intermediate cylinder substantially narrows the cone of visibility of heated interior surfaces to infrared radiation sensors.
Inventors
- 👤 O Renius
- 👤 W Bremerkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:12
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/082
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A device to suppress the radiant energy emanating from the discharge conduit of the exhaust system of a heat engine comprising: a. a second conduit engageable with the discharge conduit and terminating at a plane spaced from the discharge conduit; b. a heat shield coaxial with the second conduit, i. terminating at a second plane which is farther from the discharge conduit than the first-named plane, and ii. forming with the second conduit an annular space open at both ends; and c. an air-to-ground shield, i. coaxial with the second conduit, ii. larger than the second conduit and smaller than the heat shield and forming with the heat shield an annular space, and iii. extending longitudinally between the spaced planes.
Claim 2
Independent Claim
120 words
A device to suppress the radiant energy emanating from the discharge conduit of the exhaust system of a heat engine comprising: a. a second conduit engageable with the discharge conduit and terminating at a plane spaced from the discharge conduit; b. a heat shield coaxial with the second conduit, i. terminating at a second plane which is farther from the discharge conduit than the first-named plane, and ii. forming with the second conduit an annular space open at both ends; and c. an air-to-ground shield, i. coaxial with the second conduit, ii. larger than the second conduit and smaller than the heat shield and forming with the heat shield an annular space, and iii. extending longitudinally between the spaced planes.
Claim 3
Independent Claim
154 words
A device to suppress the radiant energy emanating from the tailpipe of the exhaust system of an enclosed heat engine comprising: a. an exhaust receiver pipe engageable with the tailpipe, i. having a substantially vertical flow axis, and ii. terminating at a horizontal plane above and spaced from the tailpipe; b. a heat shield coaxial with the exhaust receiver pipe, i. terminating at a second horizontal plane above and spaced from the first plane, and ii. forming with the exhaust receiver pipe an annular space which is open at both ends; c. means for mounting the exhaust receiver pipe and the heat shield on the enclosure of the enclosed heat engine; and d. an air-to-ground shield, i. larger than the exhaust receiver pipe and smaller than the heat shield and forming with the latter an annular space, ii. extending longitudinally between the two spaced horizontal planes, and iii. coaxial with the exhaust receiver pipe.
Claim 4
Independent Claim
154 words
A device to suppress the radiant energy emanating from the tailpipe of the exhaust system of an enclosed heat engine comprising: a. an exhaust receiver pipe engageable with the tailpipe, i. having a substantially vertical flow axis, and ii. terminating at a horizontal plane above and spaced from the tailpipe; b. a heat shield coaxial with the exhaust receiver pipe, i. terminating at a second horizontal plane above and spaced from the first plane, and ii. forming with the exhaust receiver pipe an annular space which is open at both ends; c. means for mounting the exhaust receiver pipe and the heat shield on the enclosure of the enclosed heat engine; and d. an air-to-ground shield, i. larger than the exhaust receiver pipe and smaller than the heat shield and forming with the latter an annular space, ii. extending longitudinally between the two spaced horizontal planes, and iii. coaxial with the exhaust receiver pipe.
Claim 5
Dependent Claim
45 words
A device as in claim 2, and means mounting the air-to-ground shield at the upper end of the exhaust receiver pipe and comprising a pair of elongated members secured intermediate their ends to said upper end and having their ends secured to the air-to-ground shield.
Claim 6
Dependent Claim
44 words
A device as in claim 3, wherein the means for mounting the exhaust receiver pipe and the heat shield comprises a centrally-apertured bracket adapted to receive the exhaust receiver pipe and having a plurality of ears adapted to be secured to the engine enclosure.
Claim 7
Dependent Claim
44 words
A device as in claim 2, wherein the means for mounting the exhaust receiver pipe and the heat shield comprises a centrally-apertured bracket adapted to receive the exhaust receiver pipe and having a plurality of ears adapted to be secured to the engine enclosure.
Claim 8
Dependent Claim
17 words
A device as in claim 1, and means to keep explosives from passing through the air-to-ground shield.
Claim 9
Dependent Claim
22 words
A device as in claim 6, wherein the last-named means comprises a pair of elongated members disposed substantially in the first-named plane.
Claim 10
Dependent Claim
26 words
A device as in claim 7, the elongated members being secured to the second conduit and to the air-to-ground shield to hold the latter in place.
References Cited (Backward Citations)
US3210934A
Cited
US3693880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |