US3897889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for metering, blending and conveying
Assignee: Individual
•
Filing: 1974-03-28
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Granted: 1975-08-05
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Expires: 1994-03-28
Abstract
Abstract Apparatus for metering, blending and conveying bulk material consisting of two or more flowable constituents, such as plastics granulate in the form of new and regenerated stock to be supplied to an extruder. The apparatus has a partitioned first feed hopper for the bulk material having an outlet fitted with individually sliding gates for controlling discharge of the individual constituents. A screw conveyor is provided having a horizontally extending rigid tubular housing into which the outlet from the first feed hopper discharges. The screw conveyor has a downwardly facing discharge opening at its discharge end. The apparatus also includes a metering device for dye concentrate comprising a second hopper having a vibratable chute connected to it, and a gravity tube for conducting dye concentrate leaving the chute into the screw conveyor. The housing constitutes a support for all the other parts of the apparatus, including the two hoppers, the other parts of the metering device and the screw conveyor drive motor. The housing of the screw conveyor can be mounted directly upon the feed hopper of an extruding machine.
Inventors
- 👤 Erich August Hindermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:48
CPC Classifications
B; B01; B01F; B01F33/00; B01F33/80; B01F33/805; B01F35/00; B01F35/80; B01F35/892; B29; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/29; B01F23/00; B01F23/60; B29C48/03; B29K; B29K2105/00; B29K2105/0005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
164 words
Apparatus for metering, blending and conveying bulk material consisting of two or more flowable constituents, said apparatus comprising: a first funnel-shaped container for receiving individual constituents, said first container having a vertical partition, an opening near its lower end and an outlet fitted with individually adjustable sliding gates for controlling discharge of the individual constituents; a screw conveyor comprising a housing in the form of a generally horizontally extending rigid tube into which the outlet from said container discharges, the screw conveyor possessing at its discharge end a radially downwardly oriented discharge opening; and a metering device comprising a second funnel-shaped container having a variably driven vibratable chute connected thereto and a gravity tube for conducting material leaving the vibratable chute into the screw conveyor, said chute penetrating said opening in said first container, said housing constituting means for supporting and connecting together all the other parts of the apparatus including said first and second containers and the other parts of said metering device.
Claim 2
Dependent Claim
164 words
Apparatus for metering, blending and conveying bulk material consisting of two or more flowable constituents, said apparatus comprising: a first funnel-shaped container for receiving individual constituents, said first container having a vertical partition, an opening near its lower end and an outlet fitted with individually adjustable sliding gates for controlling discharge of the individual constituents; a screw conveyor comprising a housing in the form of a generally horizontally extending rigid tube into which the outlet from said container discharges, the screw conveyor possessing at its discharge end a radially downwardly oriented discharge opening; and a metering device comprising a second funnel-shaped container having a variably driven vibratable chute connected thereto and a gravity tube for conducting material leaving the vibratable chute into the screw conveyor, said chute penetrating said opening in said first container, said housing constituting means for supporting and connecting together all the other parts of the apparatus including said first and second containers and the other parts of said metering device.
Claim 3
Dependent Claim
30 words
Apparatus as claimed in claim 1, wherein the vibratable chute extends through the opening and terminates above a gravity tube situated behind the opening and leading into the screw conveyor.
Claim 4
Dependent Claim
184 words
Apparatus for metering, blending and conveying bulk material consisting of two or more flowable constituents, said apparatus comprising: a first funnel-shaped container for receiving individual constituents, said first container having an outlet fitted with individually adjustable sliding gates for controlling discharge of the individual constituents; a screw conveyor comprising a housing in the form of a generally horizontally extending rigid tube into which the outlet from said container discharges, the screw conveyor possessing at its discharge end a radially downwardly oriented discharge opening; and a metering device comprising a second funnel-shaped container having a variably driven vibratable chute connected thereto and a gravity tube for conducting material leaving the vibratable chute into the screw conveyor and also comprising a metering pump for discharging liquid to said screw conveyor; said metering device and said metering pump being mounted together upon a pivotal plate to be swung as desired into their appropriate operative positions to bring them optionally into use; said housing constituting means for supporting and connecting together all the other parts of the apparatus including said first and second containers and said metering device.
Claim 5
Dependent Claim
184 words
Apparatus for metering, blending and conveying bulk material consisting of two or more flowable constituents, said apparatus comprising: a first funnel-shaped container for receiving individual constituents, said first container having an outlet fitted with individually adjustable sliding gates for controlling discharge of the individual constituents; a screw conveyor comprising a housing in the form of a generally horizontally extending rigid tube into which the outlet from said container discharges, the screw conveyor possessing at its discharge end a radially downwardly oriented discharge opening; and a metering device comprising a second funnel-shaped container having a variably driven vibratable chute connected thereto and a gravity tube for conducting material leaving the vibratable chute into the screw conveyor and also comprising a metering pump for discharging liquid to said screw conveyor; said metering device and said metering pump being mounted together upon a pivotal plate to be swung as desired into their appropriate operative positions to bring them optionally into use; said housing constituting means for supporting and connecting together all the other parts of the apparatus including said first and second containers and said metering device.
Claim 6
Dependent Claim
24 words
Apparatus as claimed in claim 3, wherein a delivery line from the metering pump is connected directly to the housing of the screw conveyor.
Claim 7
Dependent Claim
27 words
Apparatus as claimed in claim 3, wherein a delivery line from the metering pump discharges into a feed hopper leading into the housing of the screw conveyor.
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |