Patent US3790328A successfully refreshed from Google Patents.
US3790328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for feeding elastic melt extruders
Assignee: Farrel Corp
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Filing: 1972-04-10
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Granted: 1974-02-05
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Expires: 1992-04-10
Abstract
Abstract An apparatus and method for feeding elastic melt extruders are described herein, which apparatus includes a stator and a rotor, operatively disposed with respect to the stator to define a shear zone. The stator may be formed to define an axial outlet and a radial inlet may be provided adjacent a cylindrical surface of the rotor for introducing a charge of feed material to the extruder. A guide member may be provided, adjacent the rotor, for urging the charge of feed material axially toward the shear zone in response to the operational rotation of the rotor. The guide member may be disposed so as to axially isolate the shear zone from the radial inlet. The disclosed method includes the step of providing a shear zone, defined by a stator and a rotor, operationally disposed with respect to the stator. A charge of feed material may be deposited on a cylindrical portion of the rotor, which may be aligned along a horizontal axis and the feed material may be urged axially along the cylindrical surface of the rotor toward the shear zone in response to the rotation of the rotor. Additionally, the shear zone may be axially isolated from an inlet provided for introducing the charge of feed material.
Inventors
- 👤 B Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:29
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50; B29C48/00; B29C48/25; B29C48/36; B29C48/375; B29C48/387; B29C48/47; B29C48/50; B29C48/501; B29C48/68; B29C2045/465; B29C48/03; B29C48/09
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
161 words
An elastic melt extruder comprising: A. a casing presenting a generally cylindrical internal surface and provided with radial extending inlet means through which material may be introduced into said casing; B. Said casing having an end thereof spaced axially from said material inlet means provided with material outlet means through which material may be discharged from said casing; C. A rotor located within said casing and presenting a generally cylindrical outer surface adjacent said material inlet means and cooperating with the cylindrical internal surface of the casing to define an annular space through which material may be moved axially from said material inlet means toward said material outlet means; D. Said rotor and casing further cooperating to define a shear zone communicating with said material outlet means; E. Means for rotating said rotor, and F. Stationary guide means located adjacent said material inlet means for urging material axially toward said shear zone and material outlet means upon rotation of said rotor.
Claim 2
Dependent Claim
161 words
An elastic melt extruder comprising: A. a casing presenting a generally cylindrical internal surface and provided with radial extending inlet means through which material may be introduced into said casing; B. Said casing having an end thereof spaced axially from said material inlet means provided with material outlet means through which material may be discharged from said casing; C. A rotor located within said casing and presenting a generally cylindrical outer surface adjacent said material inlet means and cooperating with the cylindrical internal surface of the casing to define an annular space through which material may be moved axially from said material inlet means toward said material outlet means; D. Said rotor and casing further cooperating to define a shear zone communicating with said material outlet means; E. Means for rotating said rotor, and F. Stationary guide means located adjacent said material inlet means for urging material axially toward said shear zone and material outlet means upon rotation of said rotor.
Claim 3
Independent Claim
26 words
An apparatus according to claim No. 1, wherein a portion of said guide means is disposed to axially isolate said shear zone from said inlet means.
Claim 4
Independent Claim
33 words
An apparatus according to claim No. 1, wherein said inlet means is formed in an outer casing portion of said apparatus; and said guide means is disposed intermediate said casing and said rotor.
Claim 5
Dependent Claim
36 words
Apparatus according to claim No. 1, wherein said guide means presents a feed material engaging surface which decreases in axial distance from said shear zone as a function of travel about the circumference of said rotor.
Claim 6
Dependent Claim
36 words
Apparatus according to claim No. 4, wherein said guide means is so disposed about said rotor as to overlap itself: whereby said overlapping portion is operable to axially isolate said inlet means from said shear zone.
Claim 7
Dependent Claim
43 words
An elastic melt extruder according to claim 1 wherein means are provided for heating said rotor and casing whereby material is plasticized as it is moved through said annular space and shear zone from said material inlet means to said material outlet means.
Claim 8
Dependent Claim
196 words
An elastic melt extruder comprising a stationary elongated cup-like case member; an essentially cylindrical rotor within said case member operatively disposed with respect to said case member to define an annular space between said case member''s inner surface and the cylindrical surface of said rotor and a radial shear zone between the end of said rotor and the end of said case member; an axial outlet in the end of said case member; radial inlet means located axially distant from said outlet for introducing feed material onto the cylindrical surface of said rotor; means for heating said rotor; means for rotating said rotor about its cylindrical axis; means for heating said stationary member; and a stationary guide ring, located in said annular space, with a front surface axially distant from said outlet at said radial inlet means and said front surface of said stationary guide means progresses toward said outlet as it progressively transverses around said rotors'' circumference so that within 360* of traverse said front surface of said guide means material engaging said surface will progress beyond said radial inlet and toward said outlet whereby said feed material will be guided beyond said radial inlet.
Claim 9
Dependent Claim
196 words
An elastic melt extruder comprising a stationary elongated cup-like case member; an essentially cylindrical rotor within said case member operatively disposed with respect to said case member to define an annular space between said case member''s inner surface and the cylindrical surface of said rotor and a radial shear zone between the end of said rotor and the end of said case member; an axial outlet in the end of said case member; radial inlet means located axially distant from said outlet for introducing feed material onto the cylindrical surface of said rotor; means for heating said rotor; means for rotating said rotor about its cylindrical axis; means for heating said stationary member; and a stationary guide ring, located in said annular space, with a front surface axially distant from said outlet at said radial inlet means and said front surface of said stationary guide means progresses toward said outlet as it progressively transverses around said rotors'' circumference so that within 360* of traverse said front surface of said guide means material engaging said surface will progress beyond said radial inlet and toward said outlet whereby said feed material will be guided beyond said radial inlet.
Claim 10
Dependent Claim
213 words
An elastic melt extruder comprising a casing having a chamber therein provided with a portion presenting a generally cylindrical inner surface, a material inlet opening extending radially from said portion of the chamber through which material may be introduced into said chamber, a material discharge opening communicating with said chamber and spaced axially from said material inlet opening, a rotor located in said chamber and provided with an outer cylindrical surface adjacent said material inlet opening, said rotor and casing cooperating to define an annular space therebetween communicating wiTh said material inlet opening and a shear zone communicating with said annular space and located adjacent said material discharge opening, means for rotating said rotor in a predetermined direction, stationary guide means located in said annular space and presenting a radially facing surface inclined axially with respect to said rotor in said pre-determined direction and extending throughout at least 360* of the circumference of the rotor so as to advance material through said annular space from said material inlet opening toward said shear zone upon rotation of said rotor in said predetermined direction while isolating said material inlet opening from said shear zone, and means for heating material in said space as it is advanced from said material inlet opening toward said shear zone.
Claim 11
Dependent Claim
213 words
An elastic melt extruder comprising a casing having a chamber therein provided with a portion presenting a generally cylindrical inner surface, a material inlet opening extending radially from said portion of the chamber through which material may be introduced into said chamber, a material discharge opening communicating with said chamber and spaced axially from said material inlet opening, a rotor located in said chamber and provided with an outer cylindrical surface adjacent said material inlet opening, said rotor and casing cooperating to define an annular space therebetween communicating wiTh said material inlet opening and a shear zone communicating with said annular space and located adjacent said material discharge opening, means for rotating said rotor in a predetermined direction, stationary guide means located in said annular space and presenting a radially facing surface inclined axially with respect to said rotor in said pre-determined direction and extending throughout at least 360* of the circumference of the rotor so as to advance material through said annular space from said material inlet opening toward said shear zone upon rotation of said rotor in said predetermined direction while isolating said material inlet opening from said shear zone, and means for heating material in said space as it is advanced from said material inlet opening toward said shear zone.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |