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US3289398A Expired / Lapsed US ⏱️ 0.0 years remaining

Entrainment separator

Assignee: National Dust Collector Corp
•
Filing: 1963-09-18
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Granted: 1966-12-06
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Expires: 1983-09-18
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Abstract

Abstract 1,079,613. Removing dust from air. NATIONAL DUST COLLECTOR OF CANADA Ltd. Aug. 12, 1964 [Sept. 18, 1963], No. 32817/ 64. Headings B1R and B1T. Dust-laden air enters at 26 and passes over the surface of water 28, upwards through filter bed 34 and then through separator means, comprising vertically extending, parallel, Z- shaped vanes 64 (Fig. 3 not shown) which remove any entrained water droplets, to outlet 22d. An electric fan 38 is fitted on the outlet. The water level in sump 22b is maintained by float-controlled inlet 30a and overflow 30b. Bed 34 comprises spheroids, and sufficient water is entrained by the air stream to maintain a turbulent layer of water above the bed, whose depth is limited by overflow 36. Most of the dust is trapped by this layer and eventually accumulates in sump 22b, which is periodically drained and cleaned. Residual water droplets are caught by vanes 64, drain down through holes 56b in the vane-supporting plate 56 into channels 70 and are thence returned (Fig. 2, not shown) either to sump 22b or to the filter bed 34. Vanes 64 may be removed through access doors 61, and either merely rest between flanges 58, 60 on plate 56 (Fig. 4, not shown), or are recessed at their lower corners to interlock therewith (Figs. 5 .. 7, not shown). U-section rubber bumpers 54, 62 abut the outlet sides of vanes 64. Channels 70 may be rubber; vanes 64 may be aluminium or stainless steel.

Inventors

  • 👤 Robert L Mcilvaine

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 17:56
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/02; B01D47/024; B01D47/027

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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US2649924A Cited
US2575359A Cited
US2691423A Cited
US2703629A Cited
US2720938A Cited
CH304026A Cited
US2752005A Cited
US2818938A Cited
US3063220A Cited
US2911011A Cited
US3006436A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-12-05 1970-06-06 1970-12-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-12-05 1974-06-06 1974-12-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-12-05 1978-06-06 1978-12-06 $7700.00 Window Closed / Lapsed

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