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US3578776A Expired / Lapsed US ⏱️ 0.0 years remaining

Chemical feeder

Assignee: Tesco Chemicals Inc
•
Filing: 1968-08-22
•
Granted: 1971-05-18
•
Expires: 1988-08-22
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Abstract

Abstract A chemical feeder for feeding a chemical from a solid chemical compound into a stream of water. The feeder includes a housing divided into upper and lower chambers, a chemical container positioned in the upper chamber for receiving a solidified chemical compound, a liquid inlet conduit communicating with the upper chamber, a liquid exhaust conduit communicating with the lower chamber, valves controlling both conduits, and a float positioned in the lower chamber for operating both valves. The chemical container includes a plurality of apertures at spaced intervals about its lower end, and a nozzle extending inwardly from its lower end for flowing liquid from the upper chamber into contact with the solidified chemical compound and eroding the compound from its lower end. The mixture of the liquid and chemical compound flows from the upper chamber to the lower chamber.

Inventors

  • 👤 Thomas E Schneider Jr
  • 👤 Marion R Carstens
  • 👤 Homer J Bates

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 17:32
CPC Classifications
B; B01; B01F; B01F21/00; B01F21/20; B01F21/22; C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; Y; Y10; Y10T; Y10T137/00; Y10T137/4891

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 43 words
Chemical-eroding device of claim 1 wherein the means for directing a plurality of streams of liquid comprises a plurality of openings defined in the housing in a substantially horizontal plane, said openings extending tangentially and inwardly toward the central portion of the housing.
Claim 2
Dependent Claim 52 words
Chemical-eroding device of claim 1 wherein the interior of the housing is solid with an elongated shape and defines an opening along its length to provide an inner surface for the compound, and the device includes means for directing a plurality of streams of liquid toward the inner surface of the compound.
Claim 3
Dependent Claim 57 words
Chemical-eroding device of claim 2 wherein the means for directing a plurality of streams of liquid toward the soluble chemical compound and the means for directing a plurality of streams of liquid toward the inner surface of the compound are both constructed and arranged to direct the streams toward a lower end of the soluble chemical compound.
Claim 4
Dependent Claim 76 words
Chemical-eroding device for use with a soluble chemical compound, said device including a housing for the soluble chemical compound, a plurality of openings defined by the housing for directing a plurality of streams of solvent liquid against the soluble chemical compound, and a movable control ring positioned about the housing for the soluble chemical compound, said ring including a plurality of fingers in spaced-apart relation to one another for blocking one or more of the openings.
Claim 5
Dependent Claim 30 words
Chemical-eroding device of claim 5 wherein the fingers of the control ring are spaced apart a distance which alternates from relatively narrow to relatively wide with respect to each other.
Claim 6
Dependent Claim 25 words
ChemicaL-eroding device of claim 5 wherein the fingers of the control ring have alternately relatively wide and relatively narrow width with respect to each other.
Claim 7
Dependent Claim 25 words
Chemical-eroding device of claim 6 wherein the fingers of the control ring have alternately relatively wide and relatively narrow width with respect to each other.
Claim 8
Dependent Claim 34 words
Chemical-eroding device of claim 1 wherein the housing defines a plurality of openings in a substantially horizontal plane, said openings extending inwardly through the wall of the housing toward the interior of the housing.

References Cited (Backward Citations)

US1163635A Cited
US1245626A Cited
US2199844A Cited
US2218790A Cited
US2258063A Cited
US2337149A Cited
US2481279A Cited
US2740616A Cited
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US3307914A Cited
US3356460A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-17 1974-11-16 1975-05-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-17 1978-11-16 1979-05-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-17 1982-11-16 1983-05-18 $7700.00 Window Closed / Lapsed

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