Patent US6487424B1 successfully refreshed from Google Patents.
US3845908A
Expired / Lapsed
US
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Conveyor machine for suspensions and viscous materials having a cage-like housing
Assignee: BASF SE
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Filing: 1972-10-16
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Granted: 1974-11-05
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Expires: 1992-10-16
Abstract
Abstract A comminuting conveyor machine for suspensions and viscous nonhomogeneous materials having a rotor for the transport of material and a perforated housing consisting of individual bars forming with the rotor a shear zone, which bars are provided with replaceable highly abrasion-resistant shaped members inserted therein.
Inventors
- 👤 H Friedenreich
- 👤 B Suck
- 👤 J Reitsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:34
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/0092; F; F04; F04D; F04D11/00; F04D11/005
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
In a comminuting conveyor machine for suspensions, viscous materials and free-flowing solids having an internal conveying rotor and a peripheral cage-like housing stator comprising a plurality of axially extending bar and annular elements fitted together, the improvement of a plurality of tooth-shaped abrasion-resistant members replaceably retained by tongue and groove engagement on the inner surface of each of said plurality of axially extending bar to form a corresponding plurality of profiled toothed racks pointing inwardly from the periphery of the stator toward the axis of rotation, to form a shear and impact zone between themselves and the conveying rotor, each of said tooth-shaped members having an integral, abrasion-resistant projection on its side surface which bears against the side of an adjacent tooth-shaped member on the next adjacent bar, the projections along each profiled toothed rack thereby providing axially spaced annular openings between adjacent bars for the passage of the material being treated.
Claim 2
Dependent Claim
152 words
In a comminuting conveyor machine for suspensions, viscous materials and free-flowing solids having an internal conveying rotor and a peripheral cage-like housing stator comprising a plurality of axially extending bar and annular elements fitted together, the improvement of a plurality of tooth-shaped abrasion-resistant members replaceably retained by tongue and groove engagement on the inner surface of each of said plurality of axially extending bar to form a corresponding plurality of profiled toothed racks pointing inwardly from the periphery of the stator toward the axis of rotation, to form a shear and impact zone between themselves and the conveying rotor, each of said tooth-shaped members having an integral, abrasion-resistant projection on its side surface which bears against the side of an adjacent tooth-shaped member on the next adjacent bar, the projections along each profiled toothed rack thereby providing axially spaced annular openings between adjacent bars for the passage of the material being treated.
Claim 3
Dependent Claim
17 words
A conveyor machine as claimed in claim 1 wherein the tooth-shaped members have an essentially triangular cross-section.
Claim 4
Dependent Claim
35 words
A conveyor machine as claimed in claim 1 wherein each of said tooth-shaped members is retained on its bar by means of a dove-tail tongue-in-groove connection, the groove extending perpendicularly to the axially extending bar.
Claim 5
Dependent Claim
35 words
A conveyor machine as claimed in claim 1 wherein each of said tooth-shaped members is retained on its bar by means of a dove-tail tongue-in-groove connection, the groove extending parallel to the axially extending bar.
Claim 6
Dependent Claim
46 words
A conveyOr machine as claimed in claim 1 wherein each tooth-shaped member has an undercut lower segment bevelled at the same angle as the flank of the next adjacent tooth such that said undercut segment overlaps the lower portion of said flank in close fitting relationship.
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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |