US4312265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw for extruding a food mash
Assignee: Sprout Bauer Inc
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Filing: 1980-05-29
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Granted: 1982-01-26
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Expires: 2000-05-29
Abstract
Abstract An extruder screw for use in the processing of a food mash is disclosed, in which, the mash is introduced into an inlet opening in an extruder barrel and conveyed by a substantially coextensive screw to an outlet or discharge opening and then through an extrusion die. The extruder screw comprises a single flight helical screw section initiating at the inlet opening and terminating within the extruder barrel, with a flightless section immediately following thereafter, and, a further helical screw section immediately following the flightless section and extending to the proximity of the outlet opening of the extruder barrel.
Inventors
- 👤 William R. Enterline
- 👤 Dennis G. De Wald
- 👤 James R. Boose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:12
CPC Classifications
A; A23; A23P; A23P30/00; A23P30/20; B; B01; B01F; B01F27/00; B01F27/05; B01F27/11; B01F27/114; B01F27/1143; B01F27/60; B01F27/72; B01F35/00; B01F35/71; B01F35/712; B01F35/717; B01F35/71775; B30; B30B; B30B11/00; B30B11/22; B30B11/24; B30B11/246
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
121 words
Apparatus for extruding a food mash which comprises: (a) an extruder barrel having inlet and outlet openings; and (b) a substantially coextensive extruder screw disposed within said barrel; (c) said extruder screw having a single flight helical screw section initiating at said inlet opening and terminating within said barrel, which initial section is immediately thereafter followed by a flightless section having a plurality of bars arranged in axially spaced planes and extending radially to within the proximity of the inner walls of said extruder barrel and which flightless section, in turn, is immediately thereafter followed by a further helical screw section extending to the proximity of said outlet opening, said further helical screw section comprising at least a double flight section.
Claim 2
Dependent Claim
121 words
Apparatus for extruding a food mash which comprises: (a) an extruder barrel having inlet and outlet openings; and (b) a substantially coextensive extruder screw disposed within said barrel; (c) said extruder screw having a single flight helical screw section initiating at said inlet opening and terminating within said barrel, which initial section is immediately thereafter followed by a flightless section having a plurality of bars arranged in axially spaced planes and extending radially to within the proximity of the inner walls of said extruder barrel and which flightless section, in turn, is immediately thereafter followed by a further helical screw section extending to the proximity of said outlet opening, said further helical screw section comprising at least a double flight section.
Claim 3
Dependent Claim
22 words
Apparatus as in claim 1 wherein the flights of said helical screw sections have tapered trailing surfaces and substantially flat leading surfaces.
Claim 4
Dependent Claim
32 words
Apparatus as in claim 2 wherein the root diameter of said flight sections is substantially uniform throughout the length of said extruder screw and the pitch of said flights is substantially identical.
Claim 5
Dependent Claim
118 words
Apparatus for continuously pressure cooking, extruding and forming pellets of a food product, which apparatus includes a pressure feeder assembly, a seal plate assembly, a pressure cooker assembly, an extruder assembly and a cut-off assembly and, in which, said extruder assembly comprises: (a) an extruder barrel having inlet and outlet openings; (b) a substantially coextensive extruder screw disposed within said barrel; and (c) said extruder screw having a single flight helical screw section initiating at said inlet opening and terminating within said barrel, which initial section is immediately thereafter followed by a flightless section, and which flightless section, in turn, is immediately thereafter followed by a further helical screw section extending to the proximity of said outlet opening.
Claim 6
Dependent Claim
118 words
Apparatus for continuously pressure cooking, extruding and forming pellets of a food product, which apparatus includes a pressure feeder assembly, a seal plate assembly, a pressure cooker assembly, an extruder assembly and a cut-off assembly and, in which, said extruder assembly comprises: (a) an extruder barrel having inlet and outlet openings; (b) a substantially coextensive extruder screw disposed within said barrel; and (c) said extruder screw having a single flight helical screw section initiating at said inlet opening and terminating within said barrel, which initial section is immediately thereafter followed by a flightless section, and which flightless section, in turn, is immediately thereafter followed by a further helical screw section extending to the proximity of said outlet opening.
Claim 7
Dependent Claim
18 words
Apparatus as in claim 4 wherein said further helical screw section comprises at least a double flight section.
Claim 8
Dependent Claim
34 words
Apparatus as in claim 5 wherein said flightless section includes a plurality of bars arranged in axially spaced planes and extending radially to within the proximity of the inner wall of said extruder barrel.
Claim 9
Dependent Claim
22 words
Apparatus as in claim 5 wherein the flights of said helical screw sections have tapered trailing surfaces and substantially flat leading surfaces.
Claim 10
Dependent Claim
32 words
Apparatus as in claim 7 wherein the root diameter of said flight sections is substantially uniform throughout the length of said extruder screw and the pitch of said flights is substantially identical.
Claim 11
Dependent Claim
133 words
An extruder screw for use in the processing of a food mash in which the mash is introduced into an inlet opening in an extruder barrel and conveyed by a substantially coextensive screw to an outlet opening and, then, through an extrusion die, said screw comprising: (a) a single flight helical screw section initiating at said inlet opening and terminating within said barrel; (b) said initial section being immediately thereafter followed by a flightless section having a plurality of bars arranged in axially spaced planes and extending radially to within the proximity of the inner wall of said extruder barrel; and (c) a further helical screw section immediately following said flightless section and extending to the proximity of said outlet opening, said further helical screw section comprising at least a double flight section.
Claim 12
Dependent Claim
133 words
An extruder screw for use in the processing of a food mash in which the mash is introduced into an inlet opening in an extruder barrel and conveyed by a substantially coextensive screw to an outlet opening and, then, through an extrusion die, said screw comprising: (a) a single flight helical screw section initiating at said inlet opening and terminating within said barrel; (b) said initial section being immediately thereafter followed by a flightless section having a plurality of bars arranged in axially spaced planes and extending radially to within the proximity of the inner wall of said extruder barrel; and (c) a further helical screw section immediately following said flightless section and extending to the proximity of said outlet opening, said further helical screw section comprising at least a double flight section.
Claim 13
Dependent Claim
24 words
An extruder screw as in claim 9 wherein the flights of said helical screw sections have tapered trailing surfaces and substantially flat leading surfaces.
Claim 14
Dependent Claim
34 words
An extruder screw as in claim 10 wherein the root diameter of said flight sections is substantially uniform throughout the length of said extruder screw and the pitch of said flights is substantially identical.
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) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |