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US3603509A Expired / Lapsed US ⏱️ 0.0 years remaining

Gas dispersing apparatus

Assignee: FMC Corp
•
Filing: 1970-02-24
•
Granted: 1971-09-07
•
Expires: 1990-02-24
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Abstract

Abstract An apparatus for dispersing gas in liquid mediums comprising a rigid adapter, a rigid tubular inner member secured to the adapter cooperating with a passage in said adapter to form a continuous conduit for gas, a terminal member for said rigid tubular inner member, a flexible, collapsible porous sleeve, having one permanently closed end and a peripheral dimension approximately equal to the peripheral dimension of a cross section of said tubular member, enclosing said tubular member and said terminal member and secured to the adapter to form an air chamber between the tubular member and the sleeve, said terminal member having means for passage of gas between the interior of the tubular member and the closed end of said sleeve and separate communication means connecting the closed end of said sleeve and the longitudinally extending space between the sleeve and said tubular member.

Inventors

  • 👤 Leonard M Nechine

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 16:15
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/20; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01F23/2312; B01F23/23124; B01J; B01J4/00; B01J4/04; C12; C12M; C12M29/00; C12M29/06; B01F23/231245; B01F23/23126; B01F23/231265; Y; Y02; Y02W; Y02W10/00; Y02W10/10

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 36 words
Apparatus according to claim 1 wherein the tubular member between its ends is reduced along three circumferentially spaced longitudinally extending lines, the portions of reduced cross-sectional area being shaped to provide a plurality of concave surfaces.
Claim 2
Dependent Claim 45 words
Apparatus according to claim 1 wherein the difference between the surface area of said tubular member and the surface area of the sleeve member coextensive therewith being such that the entire portion of the sleeve member strikes against the concave surface of said tubular member.

References Cited (Backward Citations)

US3279773A Cited
US3315895A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-06 1975-03-08 1975-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-06 1979-03-08 1979-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-06 1983-03-08 1983-09-07 $7700.00 Window Closed / Lapsed

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