US3559566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for dehydrating green crop
Assignee: Alfa Laval AB
•
Filing: 1967-11-14
•
Granted: 1971-02-02
•
Expires: 1987-11-14
Abstract
Abstract The green crop is compressed and, during the compressing operation, is heated to a temperature of at least about the boiling point of water at the prevailing gas pressure; and the moisture emitted from the crop as a result is allowed to escape. Preferably, the green crop is held compressed during part of the time when steam is leaving it due to the heating, whereby a selfsustained or coherent end product is obtained.
Inventors
- 👤 John Axel Aspegren
- 👤 Jan Anders Askling
- 👤 Lars-Ingvar Larsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:00
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/02; A23K; A23K30/00; A23K30/10; A23K30/12; B; B30; B30B; B30B1/00; B30B1/26; B30B1/261; B30B11/00; B30B11/22; B30B9/00; B30B9/02; B30B9/04; F; F26; F26B; F26B7/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A method of dehydrating green crop generally having a moisture content of at least about 70 percent which comprises the steps of compressing the green crop, heating the green crop while under compression to a temperature of at least about the boiling point of water at the prevailing gas pressure, and causing moisture contained by the green crop to leave the same and thereby provide the crop with a reduced moisture content not in excess of about 40 percent.
Claim 2
Independent Claim
79 words
A method of dehydrating green crop generally having a moisture content of at least about 70 percent which comprises the steps of compressing the green crop, heating the green crop while under compression to a temperature of at least about the boiling point of water at the prevailing gas pressure, and causing moisture contained by the green crop to leave the same and thereby provide the crop with a reduced moisture content not in excess of about 40 percent.
Claim 3
Dependent Claim
32 words
The method according to claim 1, in which the green crop is held under compression during emission of steam from the crop, to obtain an end product which is self-sustained or coherent.
Claim 4
Dependent Claim
30 words
The method according to claim 1, in which said compression of the green crop is sufficient to obtain an end product adapted to be formed into briquettes without further compression.
Claim 5
Dependent Claim
21 words
The method according to claim 1, in which said heating is carried to a temperature between 100* C. and 170* C.
Claim 6
Dependent Claim
22 words
The method according to claim 1, in which said heating is carried to a temperature between 110* C. and 120 * C.
Claim 7
Dependent Claim
13 words
The method according to claim 1, in whiCh said heating is effected indirectly.
Claim 8
Dependent Claim
27 words
The method according to claim 1, comprising also predehydrating the green crop by squeezing to a moisture content of 50 to 70 percent prior to said steps.
Claim 9
Dependent Claim
38 words
The method according to claim 1, in which the green crop is compressed into an elongated body which is substantially annular in cross section, said heating being effected from both the inside and the outside of said body.
Claim 10
Dependent Claim
24 words
The method according to claim 8, comprising also dividing said elongated body into rods during said compressing, and cutting said rods into desired lengths.
References Cited (Backward Citations)
US729149A
Cited
US2393130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |