US3762947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystallizer
Assignee: Unilever Bestfoods North America
•
Filing: 1971-10-12
•
Granted: 1973-10-02
•
Expires: 1991-10-12
Abstract
Abstract A crystallizer construction for sugar and the like having a cylindrical container with a rotatably driven axially extending hollow shaft therein and a helical tubular coil adjacent the periphery of the container supported on radially extending tubes spaced 90* apart with short, straight axially extending tubes across the end of the ends of the radial tubes with said tubes interconnected so that a heat transfer fluid flows from a first to the second end of the container, back to the first and back to the second by flowing first diametrically through the radial tubes and axially between the ends of the radial tubes in a zigzag path, next through the helical coil and then back through other radial tubes. The hollow shaft conducts a separate flow of heat exchange fluid.
Inventors
- 👤 C Ornstein
- 👤 F Corson
- 👤 F Schenck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:01
CPC Classifications
C; C13; C13B; C13B30/00; C13B30/02; C13B30/022; C13B30/023; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/0018; B01D9/0031
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
A crystallizer construction for sugar and the like constructed in accordance with claim 1: wherein the shaft is hollow and a separate fluid circuit is provided for directing fluid through the shaft independent of the fluid flowing through said tubes.
Claim 2
Dependent Claim
65 words
A crystallizer constructIon for sugar and the like constructed in accordance with claim 1: wherein said interconnected radial and axial tubes are arranged in a first and a second set wherein the heat exchange fluid flows from one end of the container to the other in the first set, and thereafter flows from one end of the container to the other in said second set.
Claim 3
Dependent Claim
32 words
A crystallizer construction for sugar and the like constructed in accordance with claim 3: wherein the radial tubes of said first and second sets are positioned substantially 90* apart on the shaft.
Claim 4
Dependent Claim
27 words
A crystallizer construction for sugar and the like constructed in accordance with claim 3: including a helical axially extending tubular coil interconnecting said first and second sets.
Claim 5
Dependent Claim
91 words
A crystallizer construction for sugar and the like comprising in combination, a hollow container for containing a product for a heat exchange process, a hollow central shaft mounted within the container, means for driving the shaft in rotation about an axis, fluid conducting tubes supported on said shaft for rotation therewith, a first fluid circuit conducting a heat exchange fluid through the shaft, and a second fluid conducting circuit independent of the first directing a heat exchange fluid through said tubes so that separate flows may be directed through said circuits.
Claim 6
Dependent Claim
57 words
A crystallizer construction for sugar and the like constructed in accordance with claim 6 wherein said tubes include a helical coil extending for the length of the container, radial support tubes mounting the helical coil on the shaft, and axially extending tubes connecting between the ends of said radial tubes with flow through each of the tubes.
Claim 7
Dependent Claim
111 words
A crystallizer construction for sugar and the like constructed in accordance with claim 7 wherein said tubes are connected so that fluid flow passes diametrically from one side of the container to the other in a radial tube and then through an axial tube to another radial tube to flow diametrically to the other side of the container for flow from one end of the container to the other, and said fluid flows through the helical coil back to the first end of the container and then through other radial support tubes diametrically from one side of the container to the other and back to said other end of the container.
Claim 8
Dependent Claim
24 words
A crystallizer construction for sugar and the like in accordance with claim 8 wherein said radial tubes are spaced 90* apart on the shaft.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |