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US3843520A Expired / Lapsed US ⏱️ 0.0 years remaining

Floating water screen

Assignee: FMC Corp
•
Filing: 1972-05-26
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Granted: 1974-10-22
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Expires: 1992-05-26
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Abstract

Abstract 1. Apparatus for screening large quantities of water comprising: a vertical post mounted in a fixed position within a body of water, said post having an internal passage communicating with an outlet pipe and having a peripheral opening in communication with said internal passage, a frame supporting an endless circle of screens about said post, means mounting said frame for vertically sliding movement on said post with said screens in radially spaced relation to said post and to said opening, said frame having a float secured thereto to sustain said frame in predetermined relation to the surface of the body of water with the upper edges of the screens above the said body of water, and, means blocking water flow beneath said screens into said post opening, whereby water is compelled to flow through said screens to said opening.

Inventors

  • 👤 R Bottorf

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 21:21
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/05; B01D33/00; B01D33/06; B01D33/44; B01D33/48; B01D33/50

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 138 words
Apparatus for screening large quantities of water comprising: a vertical post mounted in a fixed position within a body of water, said post having an internal passage communicating with an outlet pipe and having a peripheral opening in communication with said internal passage, a frame supporting an endless circle of screens about said post, means mounting said frame for vertically sliding movement on said post with said screens in radially spaced relation to said post and to said opening, said frame having a float secured thereto to sustain said frame in predetermined relation to the surface of the body of water with the upper edges of the screens above the said body of water, and, means blocking water flow beneath said screens into said post opening, whereby water is compelled to flow through said screens to said opening.
Claim 2
Dependent Claim 138 words
Apparatus for screening large quantities of water comprising: a vertical post mounted in a fixed position within a body of water, said post having an internal passage communicating with an outlet pipe and having a peripheral opening in communication with said internal passage, a frame supporting an endless circle of screens about said post, means mounting said frame for vertically sliding movement on said post with said screens in radially spaced relation to said post and to said opening, said frame having a float secured thereto to sustain said frame in predetermined relation to the surface of the body of water with the upper edges of the screens above the said body of water, and, means blocking water flow beneath said screens into said post opening, whereby water is compelled to flow through said screens to said opening.

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) 1977-10-21 1978-04-22 1978-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-10-21 1982-04-22 1982-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-10-21 1986-04-22 1986-10-22 $7700.00 Window Closed / Lapsed

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