US3769900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of animal material compositions
Assignee: Stord Bartz Industri AS
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Filing: 1971-04-21
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Granted: 1973-11-06
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Expires: 1991-04-21
Abstract
Abstract The invention has reference to a process and apparatus for the batch sterilisation and evaporation of a water-containing animal material composition which involves leading the composition between an inner rotating heating surface and an outer stationary surface, the former representing a far larger proportion of the total heating area than the latter. After an initial heating, the composition has its passage arrested by rotating the inner surface in the reverse direction when substantial stirring is brought about and sterilisation and evaporation of the composition are effected. Finally, the composition which remains is expelled by rotating the inner heating surface in the original direction.
Inventors
- 👤 T Onarheim
- 👤 P Solberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
A; A22; A22C; A22C7/00; A23; A23B; A23B2/00; A23B2/40; A23B2/405; A23K; A23K10/00; A23K10/20; A23K40/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
242 words
An apparatus for the batch sterilisation and evaporation of a water-containing animal material composition which comprises a stationary cylindrical container havIng an inlet and an outlet and an external jacket for conducting heat medium, a cylinder for conducting heat medium mounted for rotation in either direction within said container and defining with the walls of the latter a space for the passage of the animal material composition, said cylinder communicating with a series of annular disc-shaped hollow elements arranged essentially perpendicularly thereon and connected to an outwardly projecting system of vanes, said vane system comprising pairs of vane members following immediately after each other and consisting of a first member extending obliquely of and a second member extending substantially parallel to the longitudinal axis of the cylinder, the ratio between the combined heating surfaces of the container and cylinder measured in m2 and the net volume of the container measured in m3 being at least 8 : 1 for a large apparatus and at least 10 : 1 for a small apparatus with the radial dimension of the annular cross-section between the peripheries of the hollow elements and the walls of the container being from one-fifth to one-sixth of the internal diameter of the container and the apparatus being such that rotation of the cylinder in one direction causes the composition to be urged longitudinally thereof and rotation in the reverse direction causes substantial stirring of the latter without said longitudinal movement.
Claim 2
Independent Claim
242 words
An apparatus for the batch sterilisation and evaporation of a water-containing animal material composition which comprises a stationary cylindrical container havIng an inlet and an outlet and an external jacket for conducting heat medium, a cylinder for conducting heat medium mounted for rotation in either direction within said container and defining with the walls of the latter a space for the passage of the animal material composition, said cylinder communicating with a series of annular disc-shaped hollow elements arranged essentially perpendicularly thereon and connected to an outwardly projecting system of vanes, said vane system comprising pairs of vane members following immediately after each other and consisting of a first member extending obliquely of and a second member extending substantially parallel to the longitudinal axis of the cylinder, the ratio between the combined heating surfaces of the container and cylinder measured in m2 and the net volume of the container measured in m3 being at least 8 : 1 for a large apparatus and at least 10 : 1 for a small apparatus with the radial dimension of the annular cross-section between the peripheries of the hollow elements and the walls of the container being from one-fifth to one-sixth of the internal diameter of the container and the apparatus being such that rotation of the cylinder in one direction causes the composition to be urged longitudinally thereof and rotation in the reverse direction causes substantial stirring of the latter without said longitudinal movement.
Claim 3
Dependent Claim
27 words
An apparatus according to claim 1, wherein the vane system is disposed helically along the cylinder with a degree of overlapping between successive pairs of vane members.
Claim 4
Dependent Claim
20 words
An apparatus according to claim 1, wherein the cylinder includes means for enabling condensed heat medium to be withdrawn therefrom.
Claim 5
Dependent Claim
126 words
An apparatus according to claim 3, wherein at least one pair of diametrically opposed holes are formed around the periphery of the cylinder for each of the hollow elements and a corresponding number of pipes for distributing heat medium having a length about one-third of the external diameter of the cylinder are secured therein so as to project well above the level of the heat medium condensate formed in the cylinder when the apparatus is in use and a partition member is located in close proximity to said one pair of pipes in the space formed by the hollow elements to enable said condensate to be emptied out through said one pair of pipes into the cylinder when the latter is rotated in said reverse direction.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |