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US3602712A Expired / Lapsed US ⏱️ 0.0 years remaining

Fluid irradiating apparatus using gamma rays and helical passageways

Assignee: WASTE MANAGEMENT & PURIFICATION Inc A CORP OF NY
•
Filing: 1969-02-17
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Granted: 1971-08-31
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Expires: 1989-02-17
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Abstract

Abstract A radioactive apparatus is provided for the sterilization and treatment of liquids and especially for the sterilization and treatment of liquid waste such as sewage and industrial waste by the use of gamma radiation sources. A spiraling input chamber spirals around a center chamber having an elongated core member with a helical pipe forming a helix or coil around said hollow member in the center chamber. Liquid waste being received by the apparatus passes through the spiraling chamber into the center chamber, into and through the elongated hollow member and then through the helical pipe to an output. Gamma radiation sources are located around the helical pipe in such a manner as to provide an efficient use of the radiation sources.

Inventors

  • 👤 Leland A Mann
  • 👤 David D Woodbridge

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 17:34
CPC Classifications
G; G21; G21K; G21K5/00; G21K5/02; C; C02; C02F; C02F1/00; C02F1/30

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 37 words
The apparatus according to claim 1 in which a second said passageway is connected to said center core passageway at one end portion thereof and to said output means and forming a helix around said center core.
Claim 2
Dependent Claim 23 words
The apparatus according to claim 2 in which a third passageway is connected to said center core passageway and to said input means.
Claim 3
Dependent Claim 37 words
The apparatus according to claim 3 in which said radiation sources form two circular parallel rows around said center core, one said row being located on the outside of the helix formed from said second helical passageway.
Claim 4
Dependent Claim 17 words
The apparatus according to claim 4 in which said center core passageway has baffles means located therein.
Claim 5
Dependent Claim 14 words
The apparatus according to claim 5, in which said third passageway has baffles therein.
Claim 6
Dependent Claim 40 words
The apparatus according to claim 6 in which the baffles in said center core passageway have plate baffles with openings passing therethrough alternating with solid plate baffles, said baffles being fixedly attached to said center core and to each other.
Claim 7
Dependent Claim 15 words
The apparatus according to claim 7 in which said radiation sources are elongated cylindrically shaped.
Claim 8
Dependent Claim 15 words
The apparatus according to claim 8 in which said gamma radiation sources are cobalt 60.
Claim 9
Dependent Claim 16 words
The apparatus according to claim 9, in which said third passageway is a spiralling helical pipe.
Claim 10
Dependent Claim 25 words
The apparatus according to claim 10, in which said radiation sources are contained in radiation-holding means adapted to be hung on said second helical passageway.
Claim 11
Dependent Claim 29 words
The apparatus according to claim 10, in which said radiation sources are contained in holding means attached to said center member and to the wall of said center chamber.
Claim 12
Dependent Claim 15 words
The apparatus according to claim 7, in which said gamma radiation sources are cesium 137.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-08-30 1975-03-01 1975-08-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-08-30 1979-03-01 1979-08-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-08-30 1983-03-01 1983-08-31 $7700.00 Window Closed / Lapsed

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