US3987966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal chaff dispenser
Assignee: Calspan Corp
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Filing: 1975-11-17
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Granted: 1976-10-26
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Expires: 1995-11-17
Abstract
Abstract Bundles of chaff fibers are fed into a rotating preacceleration chamber having a diverging outlet. The chaff fibers are rotated with the preacceleration chamber and are forced radially outward by centrifugal force. A feed mechanism forces the rotating chaff fibers toward the diverging outlet from which they are propelled outwardly at a high velocity and at an angle almost orthogonal to the rotational axis of the chaff dispenser.
Inventors
- 👤 Ernest V. Ruda
- 👤 John E. Blickenstaff
- 👤 Clayton J. Schneider, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:57
CPC Classifications
F; F42; F42B; F42B12/00; F42B12/02; F42B12/36; F42B12/56; F42B12/70; B; B64; B64D; B64D1/00; B64D1/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
A method of dispensing chaff fibers including the steps of: feeding chaff fibers to a rotating preacceleration chamber wherein centrifugal force forces the chaff fibers radially outward; and causing the chaff fibers to pass from the rotating preacceleration chamber to a rotating centrifugal acceleration chamber having a diverging outlet whereby chaff fibers entering the centrifugal acceleration chamber are forced outwardly due to centrifugal force and are dispensed at an angle almost orthogonal to the rotational axis of the centrifugal acceleration chamber.
Claim 2
Independent Claim
81 words
A method of dispensing chaff fibers including the steps of: feeding chaff fibers to a rotating preacceleration chamber wherein centrifugal force forces the chaff fibers radially outward; and causing the chaff fibers to pass from the rotating preacceleration chamber to a rotating centrifugal acceleration chamber having a diverging outlet whereby chaff fibers entering the centrifugal acceleration chamber are forced outwardly due to centrifugal force and are dispensed at an angle almost orthogonal to the rotational axis of the centrifugal acceleration chamber.
Claim 3
Dependent Claim
25 words
The method of claim 1 when the step of feeding chaff fibers includes feeding a desired number of bundles of chaff fibers of desired length.
Claim 4
Dependent Claim
34 words
The method of claim 1 wherein the step of feeding chaff fibers includes feeding chaff fibers in a predetermined distribution of lengths whereby radar interference can be produced in a plurality of radar bands.
Claim 5
Dependent Claim
119 words
A centrifugal chaff dispenser comprising: means defining a preacceleration chamber and a coaxial centrifugal acceleration chamber having a diverging outlet; means for causing said means defining a preacceleration chamber and a centrifugal acceleration chamber to rotate and to thereby produce a centrifugal force in said chambers; chaff fibers; and feed means for feeding said chaff fibers to said preacceleration chamber wherein said chaff fibers are subjected to centrifugal force and are forced radially outward and for then feeding said chaff fibers to said centrifugal acceleration chamber whereby said chaff fibers entering said centrifugal acceleration chamber are forced outwardly due to centrifugal force and are dispensed at an angle almost orthogonal to the rotational axis of said centrifugal acceleration chamber.
Claim 6
Dependent Claim
119 words
A centrifugal chaff dispenser comprising: means defining a preacceleration chamber and a coaxial centrifugal acceleration chamber having a diverging outlet; means for causing said means defining a preacceleration chamber and a centrifugal acceleration chamber to rotate and to thereby produce a centrifugal force in said chambers; chaff fibers; and feed means for feeding said chaff fibers to said preacceleration chamber wherein said chaff fibers are subjected to centrifugal force and are forced radially outward and for then feeding said chaff fibers to said centrifugal acceleration chamber whereby said chaff fibers entering said centrifugal acceleration chamber are forced outwardly due to centrifugal force and are dispensed at an angle almost orthogonal to the rotational axis of said centrifugal acceleration chamber.
Claim 7
Dependent Claim
24 words
The centrifugal chaff dispenser of claim 4 wherein said feed means are adjustable to permit the dispensing of said chaff fibers in varying amounts.
Claim 8
Dependent Claim
25 words
The centrifugal chaff dispenser of claim 4 wherein said chaff fibers are fed in bundles containing said chaff fibers in a predetermined distribution of lengths.
Claim 9
Dependent Claim
122 words
A centrifugal chaff dispenser comprising; means defining a tapered preacceleration chamber and a coaxial centrifugal acceleration chamber having a diverging outlet; means for causing said means defining a preacceleration chamber and a centrifugal acceleration chamber to rotate and to thereby produce a centrifugal force in said chambers; chaff fibers; and feed means for feeding said chaff fibers to said preacceleration chamber wherein said chaff fibers are subjected to centrifugal force and, due to the tapering of said preacceleration chamber, are forced radially and axially outward whereby said chaff fibers are caused to enter said centrifugal acceleration chamber and are forced outwardly due to centrifugal force and are dispensed at an angle almost orthogonal to the rotational axis of said centrifugal acceleration chamber.
Claim 10
Dependent Claim
122 words
A centrifugal chaff dispenser comprising; means defining a tapered preacceleration chamber and a coaxial centrifugal acceleration chamber having a diverging outlet; means for causing said means defining a preacceleration chamber and a centrifugal acceleration chamber to rotate and to thereby produce a centrifugal force in said chambers; chaff fibers; and feed means for feeding said chaff fibers to said preacceleration chamber wherein said chaff fibers are subjected to centrifugal force and, due to the tapering of said preacceleration chamber, are forced radially and axially outward whereby said chaff fibers are caused to enter said centrifugal acceleration chamber and are forced outwardly due to centrifugal force and are dispensed at an angle almost orthogonal to the rotational axis of said centrifugal acceleration chamber.
Claim 11
Dependent Claim
27 words
The centrifugal chaff dispenser of claim 7 wherein said feed means include means for the sequential feeding of a predetermined number of bundles of said chaff fibers.
Claim 12
Dependent Claim
20 words
The centrifugal chaff dispenser of claim 8 wherein said bundles contain said chaff fibers in a predetermined distribution of lengths.
References Cited (Backward Citations)
GB290666A
Cited
US3497139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-26 | 1980-04-26 | 1980-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-26 | 1984-04-26 | 1984-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-26 | 1988-04-26 | 1988-10-26 | $7700.00 | Window Closed / Lapsed |