Patent US3231243A successfully refreshed from Google Patents.
US3231243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for blending bulk raw materials with colorant
Assignee: Plastic Molders Supply Co Inc
•
Filing: 1964-05-11
•
Granted: 1966-01-25
•
Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Arthur V Armstrong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:17
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/02; B29B7/22; B29B7/24; B29B7/242; B29B7/244; B01; B01F; B01F35/00; B01F35/71; B01F35/717; B01F35/7173; B01F35/71731; B01F35/75; B01F35/754; B01F35/7547; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/286; B29C48/288; B29C48/29; B29C48/03; B29K; B29K2105/00; B29K2105/0005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
AN APPARATUS FOR BLENDING BULK RAW MATERIALS, COMPRISING A BLENDING CHAMBER, AT LEAST ONE DOOR ON THE BOTTOM OF SAID CHAMBER AND DOOR CONTROL MEANS COUPLED WITH SAID DOOR FOR OPENING AND CLOSING SAID DOOR, A VERTICAL TUBE WITHIN SAID BLENDING CHAMBER, A SCREW CONVEYOR WITHIN SAID VERTICAL TUBE AND EXTENDING OUT OF THE BOTTOM OF SAID TUBE AND HAVING AN OUTSIDE DIAMETER SUBSTANTIALLY EQUAL TO THE INSIDE DIAMETER OF SAID TUBE, THE BOTTOM OF SAID TUBE BEING SPACED FROM THE BOTTOM OF SAID CHAMBER, CONVEYOR DRIVING MEANS CONNECTED TO SAID CONVEYOR, A COVER ON SAID CHAMBER, A RAW MATERIAL FEED MEANS EXTENDING THROUGH SAID COVER FOR FEEDING RAW MATERIAL INTO THE CHAMBER, AND ADDITIVE MATERIAL FEED MEANS ON SAID COVER AND COMPRISING A FEED DRUM HAVING A PLURALITY OF SEPARATE POCKETS THEREIN, A METERING SCREW HAVING ONE END ADJACENT SAID FEED DRUM FOR FEEDING ADDITIVE TO SAID FEED DRUM, AND A FEED SCREW ADJACENT THE OTHER END OF SAID METERING SCREW FOR FEEDING ADDITIVE TO SAID METERING SCREW, HOUSINGS AROUND SAID FEED DRUM AND METERING SCREW, AND A FEED HOPPER IN WHICH SAID FEED SCREW IS POSITIONED, THE HOUSING FOR SAID FEED DRUM OPENING INTO SAID CHAMBER AND SAID HOPPER OPENING INTO SAID HOUSINGS, AND FEED DRIVE MEANS DRIVING SAID DRUM AND SCREWS.
Claim 2
Independent Claim
214 words
AN APPARATUS FOR BLENDING BULK RAW MATERIALS, COMPRISING A BLENDING CHAMBER, AT LEAST ONE DOOR ON THE BOTTOM OF SAID CHAMBER AND DOOR CONTROL MEANS COUPLED WITH SAID DOOR FOR OPENING AND CLOSING SAID DOOR, A VERTICAL TUBE WITHIN SAID BLENDING CHAMBER, A SCREW CONVEYOR WITHIN SAID VERTICAL TUBE AND EXTENDING OUT OF THE BOTTOM OF SAID TUBE AND HAVING AN OUTSIDE DIAMETER SUBSTANTIALLY EQUAL TO THE INSIDE DIAMETER OF SAID TUBE, THE BOTTOM OF SAID TUBE BEING SPACED FROM THE BOTTOM OF SAID CHAMBER, CONVEYOR DRIVING MEANS CONNECTED TO SAID CONVEYOR, A COVER ON SAID CHAMBER, A RAW MATERIAL FEED MEANS EXTENDING THROUGH SAID COVER FOR FEEDING RAW MATERIAL INTO THE CHAMBER, AND ADDITIVE MATERIAL FEED MEANS ON SAID COVER AND COMPRISING A FEED DRUM HAVING A PLURALITY OF SEPARATE POCKETS THEREIN, A METERING SCREW HAVING ONE END ADJACENT SAID FEED DRUM FOR FEEDING ADDITIVE TO SAID FEED DRUM, AND A FEED SCREW ADJACENT THE OTHER END OF SAID METERING SCREW FOR FEEDING ADDITIVE TO SAID METERING SCREW, HOUSINGS AROUND SAID FEED DRUM AND METERING SCREW, AND A FEED HOPPER IN WHICH SAID FEED SCREW IS POSITIONED, THE HOUSING FOR SAID FEED DRUM OPENING INTO SAID CHAMBER AND SAID HOPPER OPENING INTO SAID HOUSINGS, AND FEED DRIVE MEANS DRIVING SAID DRUM AND SCREWS.
References Cited (Backward Citations)
US2517456A
Cited
US3076637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |