Patent US3618655A successfully refreshed from Google Patents.
US3618655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray drying apparatus
Assignee: Marine Technology Inc
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Filing: 1969-08-05
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Granted: 1971-11-09
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Expires: 1989-08-05
Abstract
Abstract The apparatus and method of this invention pertains to the atomizing of a paste or slurry, and the drying thereof to produce a meal or powder. A paste or slurry of material to be dried is introduced into a pipe, such as the exhaust pipe of a pulse jet engine, in which the cycling reversing flow of gases atomizes the paste or slurry and rapidly dries the resulting particles. The partly dried particles are then dispensed into a tank having vortices of gas at a substantially lower temperature than that found in the pulse jet exhaust.
Inventors
- 👤 Raymond M Lockwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:16
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
216 words
An apparatus for drying a substance comprising: a. a plurality of pulse jet engines each including a combustion chamber, an input pipe and an exhaust pipe, said pulse jet engines capable of generating an oscillating flow of hot gases through said input pipes and said exhaust pipes; b. injection means connected to a first of said pulse jet engines for injecting the substance to be dried into the oscillating flow of hot gases from said first pulse jet engine thereby causing said substance to be particalized and partially dried; c. a defined drying region in communication with the oscillating flow of hot gases from said first pulse jet engine; and d. means for establishing currents of circulating hot gases in said drying region, including a second of said pulse jet engines oriented so that the gases discharged therefrom enter said drying region in a direction which is inclinEd with respect to the direction at which the oscillating flow of hot gases from said first pulse jet engine and said substance enters said drying region and chordal to the surface of said drying region and a third of said pulse jet engines oriented so that the gases discharged therefrom enter said drying region in a direction which is substantially tangential to the surface of said drying region.
Claim 2
Independent Claim
216 words
An apparatus for drying a substance comprising: a. a plurality of pulse jet engines each including a combustion chamber, an input pipe and an exhaust pipe, said pulse jet engines capable of generating an oscillating flow of hot gases through said input pipes and said exhaust pipes; b. injection means connected to a first of said pulse jet engines for injecting the substance to be dried into the oscillating flow of hot gases from said first pulse jet engine thereby causing said substance to be particalized and partially dried; c. a defined drying region in communication with the oscillating flow of hot gases from said first pulse jet engine; and d. means for establishing currents of circulating hot gases in said drying region, including a second of said pulse jet engines oriented so that the gases discharged therefrom enter said drying region in a direction which is inclinEd with respect to the direction at which the oscillating flow of hot gases from said first pulse jet engine and said substance enters said drying region and chordal to the surface of said drying region and a third of said pulse jet engines oriented so that the gases discharged therefrom enter said drying region in a direction which is substantially tangential to the surface of said drying region.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1 wherein said injection means injects the substance to be dried into the oscillating flow of gases through the exhaust pipe of the first pulse jet engine.
Claim 4
Dependent Claim
57 words
The drying apparatus of claim 2 wherein said injecting means includes a feed line connected to a source of the substance to be dried, and having an output end positioned within said exhaust pipe, the position of the output end being axially adjustable relative to the end of said exhaust pipe of said first pulse jet engine.
Claim 5
Dependent Claim
62 words
The drying apparatus of claim 2 wherein said drying region comprises an enclosure having a bottom portion and a side portion, the oscillating flow of hot gases from said first pulse jet engine entering said enclosure through said bottom portion and the oscillating flow of hot gases from said second and third pulse jet engines entering said enclosure through said side portion.
Claim 6
Dependent Claim
97 words
The drying apparatus as claimed in claim 4 wherein the first pulse jet engine is positioned so that the oscillating flow of gases from said exhaust pipe and the injected substance to be dried enter the drying region in an upward direction, and the second and third pulse jet engines are positioned so that the oscillating flow of hot gases therefrom will interact with the flow of gases and the substance from said first pulse jet engine thereby causing the substance and hot gases from said first pulse jet engine to change direction within said drying region.
Claim 7
Dependent Claim
51 words
The drying apparatus of claim 5 wherein said drying region is a drying chamber including a bottom portion and a side portion, said first pulse jet engine communicating with said drying chamber through said bottom portion, and said second pulse jet engine communicating with said drying chamber through said side portion.
Claim 8
Dependent Claim
55 words
The drying apparatus of claim 6 further including an additional chordal pulse jet engine communicating with said drying chamber through said side portion and positioned so that the oscillating flow of hot gases therefrom will interact with the path of the substance to be dried, in a manner similar to said second pulse jet engine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |