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US3577868A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for separating foam into its liquid and gaseous phases

Assignee: Chemap AG
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Filing: 1969-11-05
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Granted: 1971-05-11
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Expires: 1989-11-05
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Abstract

Abstract A vessel accommodates material to be processed, including foam, and which material is to be protected against contaminants from the exterior of the vessel. A rotatable shaft extends through an opening in the vessel into the latter and carries within the vessel a foam separator which effects foam separation into the liquid and gaseous phases when the shaft is rotated. A drive engages the shaft exteriorly of and spaced from the opening in the vessel for rotating the shaft. Wall means surrounds the shaft intermediate the opening in the vessel and the drive and forms a chamber about the surrounded portion of the shaft. A pair of sliding ring seals are provided on the shaft closing the chamber with respect to the opening in the vessel as well as with respect to the drive. Means is provided for circulating a flowing medium through the chamber to thereby prevent the passage of contaminants from the drive into the chamber and from the latter through the opening into the vessel.

Inventors

  • 👤 Hans Muller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 17:58
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 22 words
A device as defined in claim 1; and further comprising cooling conduit means for cooling said flowing medium circulating through said chamber.
Claim 2
Dependent Claim 27 words
A device as defined in claim 2; wherein said cooling conduit means constitutes a helix located in said chamber surrounding said second shaft portion within the same.
Claim 3
Dependent Claim 68 words
A device as defined in claim 1, wherein said sliding ring seal means comprises a pair of first annular sealing members provided on said second shaft portion and each having a first annular sealing surface, and a pair of second annular sealing members provided on said housing means and wall means, respectively, and each having a second sealing surface in sliding contact with the associated first sealing surface.
Claim 4
Dependent Claim 88 words
A device as defined in claim 1, said second shaft portion having a free end spaced from said drive means; further comprising outlet conduit means communicating with said inner passage at said free end; second wall means defining a second chamber surrounding said second shaft portion intermediate said drive means and said outlet conduit means; a pair of additional sliding ring means closing said second chamber with reference to said drive means and outlet means communicating with said second chamber for circulating a flowable medium through the same.
Claim 5
Dependent Claim 24 words
A device as defined in claim 5, wherein said outlet means of said chamber communicates with said additional inlet means of said second chamber.
Claim 6
Dependent Claim 40 words
A device as defined in claim 5, said drive means comprising a casing; and wherein said wall means and said second wall means are unitary with said casing and releasably connected to said housing and said outlet conduit means, respectively.
Claim 7
Dependent Claim 28 words
A device as defined in claim 5; and further comprising cooling conduit means associated with both of said chambers for cooling the flowable medium circulating through the same.
Claim 8
Dependent Claim 55 words
A device as defined in claim 1, said drive means comprising a drive motor and a casing having a first portion facing towards and a second portion facing away from said housing, said first portion being mounted on said shaft and said second portion being mounted on said first portion and carrying said drive motor.
Claim 9
Dependent Claim 82 words
A device as defined in claim 9, said second shaft portion having a free end remote from said housing; and said shaft further comprising a rotatable sleeve surrounding said second shaft portion and extending from the region of said free end portion to the interior of said casing, and cooperating coupling portions on said shaft and said sleeve within said casing, said drive means engaging said sleeve and transmitting motion via the same and said coupling poRtions to said second shaft portion.

References Cited (Backward Citations)

US2484971A Cited
US3191545A Cited
US3460810A Cited
US3501414A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-10 1974-11-09 1975-05-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-10 1978-11-09 1979-05-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-10 1982-11-09 1983-05-11 $7700.00 Window Closed / Lapsed

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