US3861287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruder device for preparing foodstuffs
Assignee: Buehler AG
•
Filing: 1973-05-11
•
Granted: 1975-01-21
•
Expires: 1993-05-11
Abstract
Abstract An extruder device for manufacturing foodstuffs, especially snacks, of the puffed and non-puffed varieties comprises a mixing feed screw, a cooking feed screw, and a cooling feed screw. The feed screws are so arranged that the prepared foodstuffs may be expelled from the apparatus after leaving the cooking feed screw, thereby bypassing the cooling feed screw.
Inventors
- 👤 Josef Manser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:21
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/24; A; A23; A23L; A23L7/00; A23L7/10; A23L7/161; A23L7/165; A23L7/17; A23N; A23N17/00; A23N17/005; A23P; A23P30/00; A23P30/20
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
185 words
An extruder device for manufacturing solid foodstuffs, especially snacks, dog food, flakes or crispies, of the puffed or non-puffed varieties, comprising: a mixing means for mixing foodstuff ingredients having a doughlike consistencY; a transporting means, connected to said mixing means and having an outlet opening, for transporting the foodstuff ingredients from said mixing means to said outlet opening; a cooking feed screw means for cooking and transporting the foodstuff ingredients comprising a cooking cylinder having a receiving opening, at one end thereof, disposed on said outlet opening of said transporting means, said cooking cylinder having an internal bore with a first helical rotor internally disposed therein and a discharge opening at the other end thereof; a cooling feed screw means for cooling and transporting foodstuff ingredients comprising a cooling cylinder having an inlet opening at one end thereof disposed on said discharge opening of said cooking feed screw means, said cooling cylinder having an internal bore with a second helical rotor internally disposed therein; and said cooling cylinder being disposed with the longitudinal axis thereof being inclined to the longitudinal axis of said cooking cylinder.
Claim 2
Dependent Claim
185 words
An extruder device for manufacturing solid foodstuffs, especially snacks, dog food, flakes or crispies, of the puffed or non-puffed varieties, comprising: a mixing means for mixing foodstuff ingredients having a doughlike consistencY; a transporting means, connected to said mixing means and having an outlet opening, for transporting the foodstuff ingredients from said mixing means to said outlet opening; a cooking feed screw means for cooking and transporting the foodstuff ingredients comprising a cooking cylinder having a receiving opening, at one end thereof, disposed on said outlet opening of said transporting means, said cooking cylinder having an internal bore with a first helical rotor internally disposed therein and a discharge opening at the other end thereof; a cooling feed screw means for cooling and transporting foodstuff ingredients comprising a cooling cylinder having an inlet opening at one end thereof disposed on said discharge opening of said cooking feed screw means, said cooling cylinder having an internal bore with a second helical rotor internally disposed therein; and said cooling cylinder being disposed with the longitudinal axis thereof being inclined to the longitudinal axis of said cooking cylinder.
Claim 3
Dependent Claim
54 words
The extruder device of claim 1 comprising a bypass means for bypassing and discharging the foodstuff ingredients from said cooking feed screw means, said bypass means being connected to said cooking feed screw means and said cooling feed screw means at the junction thereof, thereby bypassing said cooling feed screw means for direct discharge.
Claim 4
Dependent Claim
20 words
The device of claim 2 wherein said bypass means includes heat exchange means for cooling or heating said bypass means.
Claim 5
Dependent Claim
11 words
The device of claim 2 wherein said bypass means are interchangeable.
Claim 6
Dependent Claim
63 words
A device in accordance with claim 2 wherein said bypass means is attached directly to said cooling feed screw means adjacent said discharge opening of said cooking feed screw means, and said bypass means further includes: a heat exchange portion; an exit nozzle adjacent said heat exchange portion; a bucket ring disposed on said exit nozzle; and a cutter adjacent said bucket ring.
Claim 7
Dependent Claim
40 words
The extruder device of claim 1 wherein said cooking feed screw means and said cooling feed screw means further include heat exchange means, connected respectively to said cooking cylinder and said cooling cylinder, for raising and lowering the temperature thereof.
Claim 8
Dependent Claim
60 words
The extruder device of claim 6 wherein said cooking and cooling cylinders each include exterior walls and said heat exchange means comprise helical channels disposed within respectively said exterior walls of said cooking and cooling cylinders, said helical channels being capable of handling hot and cold mediums; whereby said cooking and cooling feed screw means may be heated and cooled.
Claim 9
Dependent Claim
26 words
The device of claim 1 wherein the longitudinal axis of said transporting means is substantially parallel to the longitudinal axis of said cooling feed screw means.
Claim 10
Dependent Claim
30 words
The device of claim 1 wherein said helical rotor means comprise: a cylindrical shaft; helical threads disposed about said shaft; and driving means for rotating said shaft and connected thereto.
Claim 11
Dependent Claim
27 words
The extruder device of claim 1 wherein said cooling feed screw means has a discharging end and a replaceable bucket ring is mounted on said discharging end.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |