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US4049205A Expired / Lapsed US ⏱️ 0.0 years remaining

Horizontal, detachable, ball mill

Assignee: Netzsch Mastermix Ltd
•
Filing: 1976-07-23
•
Granted: 1977-09-20
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Expires: 1996-07-23
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Abstract

Abstract A mill comprises a shaft mounted in a pair of bearings located at one end of the shaft, and a wall having an opening through which the shaft extends. A horizontal-flow container for the charge is removably mounted at one end in cantilever fashion upon one side of said wall and has a screened outlet at its other end. A tubular inlet housing is mounted on the other side of said wall, surrounding a portion of the shaft between said wall and said bearings, and has a seal through which the shaft enters the inlet housing. A feed screw is mounted on said portion of the shaft. Another portion of the shaft, extending within the container, is of greater diameter than said opening and is closely spaced from said wall to provide a narrow gap through which material passes from the inlet housing into the container. The shaft is hollow and has means for circulating a cooling fluid therethrough, and a shroud holds a cooling fluid in contact with the exterior of said seal.

Inventors

  • 👤 Robert William English

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 09:29
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 181 words
A mill comprising a shaft mounted in a pair of bearings located at one end of the shaft, and a wall having an opening through which the shaft extends, wherein the improvement comprises a horizontal-flow container for the charge, which is removably mounted at one end in cantilever fashion upon one side of said wall and has a screened outlet at its other end, a tubular inlet housing which is mounted on the other side of said wall, surrounding a portion of the shaft between said wall and said bearings, and which has a seal through which the shaft enters the inlet housing, a feed screw mounted on said portion of the shaft, another portion of the shaft, extending within the container, being of greater diameter than said opening and being closely spaced from said wall to provide a narrow gap through which material passes from the inlet housing into the container, the shaft being hollow and having means for circulating a cooling fluid therethrough, and a shroud for holding a cooling fluid in contact with the exterior of said seal.
Claim 2
Dependent Claim 181 words
A mill comprising a shaft mounted in a pair of bearings located at one end of the shaft, and a wall having an opening through which the shaft extends, wherein the improvement comprises a horizontal-flow container for the charge, which is removably mounted at one end in cantilever fashion upon one side of said wall and has a screened outlet at its other end, a tubular inlet housing which is mounted on the other side of said wall, surrounding a portion of the shaft between said wall and said bearings, and which has a seal through which the shaft enters the inlet housing, a feed screw mounted on said portion of the shaft, another portion of the shaft, extending within the container, being of greater diameter than said opening and being closely spaced from said wall to provide a narrow gap through which material passes from the inlet housing into the container, the shaft being hollow and having means for circulating a cooling fluid therethrough, and a shroud for holding a cooling fluid in contact with the exterior of said seal.
Claim 3
Dependent Claim 46 words
A mill as claimed in claim 1 wherein the seal between two parts consisting of the inlet housing and the shaft comprises a ceramic ring angularly fast with one part and a carbon ring angularly fast with the other part, the rings being urged into contact.
Claim 4
Dependent Claim 32 words
A mill as claimed in claim 1 wherein said container is provided with a detachable cap, and said screen is detachable from the container, the container being detachable from the mill structure.

References Cited (Backward Citations)

US1141898A Cited
US2060408A Cited
US2848171A Cited
US2918223A Cited
US3050263A Cited
US3243128A Cited
US3685749A Cited
US3843064A Cited
US3957210A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-09-19 1981-03-21 1981-09-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-09-19 1985-03-21 1985-09-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-09-19 1989-03-21 1989-09-20 $7700.00 Window Closed / Lapsed

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