US3752445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw lifter mixer
Assignee: MUNSON MILL MACHINERY CO
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Filing: 1971-10-19
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Granted: 1973-08-14
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Expires: 1991-10-19
Abstract
Abstract A mixer for particulate material has a cylinder supported for rotation about a substantially horizontal axis, the support means being adjustable for elevating its receiving end so as to be operated as a continuous mixer. A plurality of helically flanged screw tubes extend longitudinally as lifters, having their ends secured to the end walls of the cylinder adjacent the wall periphery. As the cylinder rotates the material being mixed is picked up and released by the screw flanges so as to shift parts of the mix axially in either direction. When the receiving end is elevated the total mix is also continually shifted by the incline of the cylinder toward the discharge end. Axial openings at either end are closed by diaphragms, each secured at its center to a rotating tube maintained at a constant angle to the axis of the cylinder by a floor supported bushing.
Inventors
- 👤 L Nowak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:04
CPC Classifications
B; B01; B01F; B01F29/00; B01F29/25; B01F29/40; B01F29/60; B01F29/63; B01F35/00; B01F35/71; B01F35/717; B01F35/7173; B01F35/75; B01F35/754; B01F35/7548; B01F29/403; B01F29/4033
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
A mixer comprising an elongated cylinder rotatably supported on a frame, and means for rotating the cylinder, the cylinder having a plurality of helically flanged screws extending axially of the cylinder and secured to the cylinder as lifters contiguous to the cylinder wall, the cylinder end walls being annular and adapted for receiving material to be mixed at the supply end and adapted at the delivery end for delivery of the mixed material therefrom, the annular end walls having flexible annular diaphragms secured thereto about their openings, each diaphragm being secured at its central opening around a rotating tube, the rotating tube being rotatably supported in a journal supported independently of the cylinder, the rotating tube at the supply end extending diagonally upward from the cylinder and the rotating tube at the delivery end extending diagonally downward from the cylinder, a fixed tube at the supply end adapted to convey material to be mixed to the rotating tube, and a fixed tube at the delivery end adapted to carry away mixed material from the rotating tube at that end, the fixed tubes being in sealed relation with the rotating tubes.
Claim 2
Dependent Claim
190 words
A mixer comprising an elongated cylinder rotatably supported on a frame, and means for rotating the cylinder, the cylinder having a plurality of helically flanged screws extending axially of the cylinder and secured to the cylinder as lifters contiguous to the cylinder wall, the cylinder end walls being annular and adapted for receiving material to be mixed at the supply end and adapted at the delivery end for delivery of the mixed material therefrom, the annular end walls having flexible annular diaphragms secured thereto about their openings, each diaphragm being secured at its central opening around a rotating tube, the rotating tube being rotatably supported in a journal supported independently of the cylinder, the rotating tube at the supply end extending diagonally upward from the cylinder and the rotating tube at the delivery end extending diagonally downward from the cylinder, a fixed tube at the supply end adapted to convey material to be mixed to the rotating tube, and a fixed tube at the delivery end adapted to carry away mixed material from the rotating tube at that end, the fixed tubes being in sealed relation with the rotating tubes.
Claim 3
Dependent Claim
78 words
The mixer defined in claim 1 having short flights secured to the cylinder wall adapted to drop mixed material toward the rotating delivery tube, the fixed delivery tube having two sections secured together at an angle, a rod adjustably secured in and extending axially through one section and axially through the rotating delivery tube, the rod having a deflector plate secured to its end in the cylinder for regulating the flow of mixed material through the delivery tubes.
Claim 4
Dependent Claim
113 words
In a mixer for particulate material having a rotating hollow cylinder mixing chamber and means for rotating the cylinder about its axis, the cylinder having an axial opening in at least one end; a closure for the opening comprising: an annular diaphragm secured to the cylinder end about the opening therein, the diaphragm being secured at its central opening around a rotating tube, the rotating tube being rotatably supported by means independent of the cylinder at an angle to the axis of the rotating cylinder, whereby the inclined rotating tube is adapted for passage therethrough of material being mixed and the tube may be sealed at a point remote from the mixing chamber.
Claim 5
Dependent Claim
113 words
In a mixer for particulate material having a rotating hollow cylinder mixing chamber and means for rotating the cylinder about its axis, the cylinder having an axial opening in at least one end; a closure for the opening comprising: an annular diaphragm secured to the cylinder end about the opening therein, the diaphragm being secured at its central opening around a rotating tube, the rotating tube being rotatably supported by means independent of the cylinder at an angle to the axis of the rotating cylinder, whereby the inclined rotating tube is adapted for passage therethrough of material being mixed and the tube may be sealed at a point remote from the mixing chamber.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |