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US3855641A Expired / Lapsed US ⏱️ 0.0 years remaining

Recirculating sewerage system

Assignee: Kidde Inc
•
Filing: 1973-01-24
•
Granted: 1974-12-24
•
Expires: 1993-01-24
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Abstract

Abstract A recirculating sewerage system including at least one water closet, a recirculating tank including effluent receiving and pumping chambers separated by a common wall, the common wall supporting a filter for restricting the passage of bulk waste including paper products which float on the top of the received effluent from the effluent receiving chamber to the pumping chamber, a pump including a filtering element for drawing liquid effluent from the pumping chamber and for directing the drawn and filtered liquid effluent to the water closet to flush same, the means for creating turbulence proximate the upper surface of the effluent within the effluent receiving chamber adjacent the filter when the pump is actuated whereby the flow of the floating paper products from the effluent receiving chamber to the pumping chamber during actuation of the pump will be inhibited.

Inventors

  • 👤 G Foster
  • 👤 A Campbell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 03:21
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/016; C; C02; C02F; C02F2201/00; C02F2201/001

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 135 words
A recirculating sewerage system comprising a recirculating tank including effluent receiving and filtrate compartments separated by a vertically extending common wall, at least one water closet adapted to discharge the effluent flushed therefrom into said receiving chamber, said common wall including filter means for inhibiting the passage of bulk waste from said effluent receiving chamber into said pumping chamber, a rinsing manifold extending adjacent to and along the top of said filter means and including a plurality of apertures opening downwardly proximate said filter means, flush pump means communicating with said filtrate compartment, means for conjointly directing a major portion of the pressurized filtrate discharged from said flush pump means to said water closet to flush same and a minor portion of the pressurized filtrate discharged from said flush pump means to said rinsing manifold.
Claim 2
Dependent Claim 135 words
A recirculating sewerage system comprising a recirculating tank including effluent receiving and filtrate compartments separated by a vertically extending common wall, at least one water closet adapted to discharge the effluent flushed therefrom into said receiving chamber, said common wall including filter means for inhibiting the passage of bulk waste from said effluent receiving chamber into said pumping chamber, a rinsing manifold extending adjacent to and along the top of said filter means and including a plurality of apertures opening downwardly proximate said filter means, flush pump means communicating with said filtrate compartment, means for conjointly directing a major portion of the pressurized filtrate discharged from said flush pump means to said water closet to flush same and a minor portion of the pressurized filtrate discharged from said flush pump means to said rinsing manifold.
Claim 3
Dependent Claim 21 words
A recirculating sewerage system according to claim 1, wherein said filter means comprises a plurality of vertically extending uninterrupted flared-out louvers.
Claim 4
Dependent Claim 23 words
A recirculating sewerage system according to claim 1, wherein each of said louvers terminate at the end thereof with a substantially circular aperture.

References Cited (Backward Citations)

US812530A Cited
US3450266A Cited
US3487475A Cited
US3566417A Cited
US3579651A Cited
US3674148A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-12-23 1978-06-24 1978-12-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-12-23 1982-06-24 1982-12-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-12-23 1986-06-24 1986-12-24 $7700.00 Window Closed / Lapsed

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