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US3703960A Expired / Lapsed US ⏱️ 0.0 years remaining

Marine sewage collection and discharge systems

Assignee: Individual
•
Filing: 1970-09-15
•
Granted: 1972-11-28
•
Expires: 1990-09-15
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Abstract

Abstract Liquid and solid waste from houseboat dwellings, ships and boats moored to and nearby stationary or floating docks at both fresh and salt water locations is collected and transferred to a sewer system ashore for treatment. This waterfront sewage collection and discharge system is essentially supported and held in place by docks and floats so it is not effected by water level changes caused by tides and waves. From the outlets of house boats, ships and boats, sewage is directed through flexible couplings and collection pipes, arranged on grade, into partially submerged holding tanks. Each tank is equipped with pumping apparatus to periodically discharge sewage into pipes leading to a sewage system ashore. Holding tanks are preferably comprised of several like units singly lowered away into the water and sealed together during their convenient installation. Often sewer pipe sections are used as these holding tank units. When docks and floats are changeable in elevation and sufficiently strong, holding tanks are suspended from them. When docks and floats remain essentially at the same elevation, holding tanks may be positioned on the bottom below or nearby them. Plastic pipes are often used and must be held underwater by restraining means to overcome their bouyancy. Expansion and contraction of component assemblies caused by water motion and temperature changes are always compensated for by flexibly joining some members together.

Inventors

  • 👤 Kenneth F Kennedy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 13:47
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/22

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 92 words
A sewage collection and discharge system for house boats, ships, and boats, moored to docks and floats, other tie up facilities, and marinas, comprising: a. a partially submerged collection and holding tank; b. collection lines extending from various water craft to the holding tank; c. discharge line from the holding tank to a shore sewage collection facility; and d. a pumping means, in the partially submerged collection and holding tank to remove sewage from the collection and holding tank and direct it through the discharge line into a shore sewage collection facility.
Claim 2
Dependent Claim 92 words
A sewage collection and discharge system for house boats, ships, and boats, moored to docks and floats, other tie up facilities, and marinas, comprising: a. a partially submerged collection and holding tank; b. collection lines extending from various water craft to the holding tank; c. discharge line from the holding tank to a shore sewage collection facility; and d. a pumping means, in the partially submerged collection and holding tank to remove sewage from the collection and holding tank and direct it through the discharge line into a shore sewage collection facility.
Claim 3
Dependent Claim 21 words
In the sewage collection and discharge system, as claimed in claim 1, a collection and holding tank formed of multiple sections.
Claim 4
Dependent Claim 28 words
In the sewage collection and discharge system, as claimed in claim 2, tension rods being used to compressively hold together the sections of the collection and holding tank.
Claim 5
Dependent Claim 36 words
In the sewage collection and discharge system, as claimed in claim 3, sealing materials being used between the sections and maintained in such position by the functioning tension rods, thereby maintaining seal sections under the water.
Claim 6
Dependent Claim 33 words
In the sewage collection and discharge system, as claimed in claim 1, the collection lines being installed and maintained on grade to guide the flow of sewage into the collection and holding tank.
Claim 7
Dependent Claim 24 words
In the sewage collection and discharge system, as claimed in claim 1, the pumping means being a submersible pump having an enclosed electrical motor.
Claim 8
Dependent Claim 27 words
In the sewage collection and discharge system, as claimed in claim 6, a movable float assembly being used to actuate a switching means of the submersible pump.
Claim 9
Dependent Claim 30 words
In the sewage collection and discharge system, as claimed in claim 1, the pumping means being a compressed air system to expel the sewage from the collection and holding tank.
Claim 10
Dependent Claim 29 words
In the sewage collection and discharge system, as claimed in claim 8, an air bladder being used to actUate a valve means to control the entry of compressed air.
Claim 11
Dependent Claim 24 words
In the sewage collection and discharge system, as claimed in claim 1, a sewage level sensing means used to periodically operate the pumping means.
Claim 12
Dependent Claim 39 words
In the sewage collection and discharge system, as claimed in claim 10, the sewage level sensing means being adjusted to allow sewage to be held also in the collection lines to enhance the overall holding capacity of the system.
Claim 13
Dependent Claim 28 words
In the sewage collection and discharge system, as claimed in claim 1, flexible connectors being used throughout the system to accommodate for water motions and temperature change motions.
Claim 14
Dependent Claim 28 words
In the sewage collection and discharge system, as claimed in claim 1, adjustable supports being used throughout to connect components of the system to dock and float structures.
Claim 15
Dependent Claim 23 words
In the sewage collection and discharge system, as claimed in claim 1, check valves being used in collection lines to prevent reverse flows.
Claim 16
Dependent Claim 22 words
In the sewage collection and discharge system, as claimed in claim 1, ballast and hold down means being used to overcome buoyancy.
Claim 17
Dependent Claim 23 words
In the sewage collection and discharge system, as claimed in claim 1, rigging facilities being installed to facilitate initial assembly and subsequent repairs.

References Cited (Backward Citations)

US3528462A Cited
US3543294A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-11-28 1976-05-29 1976-11-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-11-28 1980-05-29 1980-11-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-11-28 1984-05-29 1984-11-28 $7700.00 Window Closed / Lapsed

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