US3675774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine recirculating and holding tank
Assignee: MAG Aerospace Industries LLC
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Filing: 1970-09-22
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Granted: 1972-07-11
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Expires: 1990-09-22
Abstract
Abstract A holding tank is provided to convert a conventional marine toilet into a recirculating toilet system. The tank is provided with a horizontal partition dividing the tank into a lower, clear liquid portion and an upper waste material holding portion. One longitudinal wall of the tank is angled, and a perforated screen is aligned parallel and adjacent this angled wall, connecting to the horizontal partition. A conventional, pump operated marine toilet is then connected to the tank so that flushing liquid is drawn from the bottom of the tank and toilet discharge is applied to the upper portion of the tank. The tank is cleaned by pumping fresh liquid into the lower portion of the tank and pumping the contents of the tank from an intake position immediately above the horizontal partition. When the tank is evacuated by the clean-out pump, a premeasured charge of clear liquid remains in the lower portion.
Inventors
- 👤 George C Roberts
- 👤 Donald A Dotson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:55
CPC Classifications
E; E03; E03D; E03D5/00; E03D5/016; Y; Y10; Y10S; Y10S4/00; Y10S4/19
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
170 words
A holding and recirculating tank adapted to be coupled to a marine toilet comprising: an elongated tank of trapezoidal cross section having parallel top and bottom sides and an angled, elongated side wall extending outwardly from the base; a partition, parallel to said bottom side of said tank and separated therefrom, extending substantially across the width of said tank, one edge of said partition being spaced apart from said angled side wall; and a filter member extending the length of said tank from the top of said angled side wall to said edge of said partition, said filter member being substantially parallel to said angled side wall; whereby said partition divides said tank into an upper portion and a lower portion with fluid communication therebetween through said filter member, means adapted for connecting said upper portion of said tank to the waste discharge of a marine toilet; and means adapted for connecting said lower portion of said tank to said marine toilet to permit recirculation of the fluid for flushing.
Claim 2
Dependent Claim
170 words
A holding and recirculating tank adapted to be coupled to a marine toilet comprising: an elongated tank of trapezoidal cross section having parallel top and bottom sides and an angled, elongated side wall extending outwardly from the base; a partition, parallel to said bottom side of said tank and separated therefrom, extending substantially across the width of said tank, one edge of said partition being spaced apart from said angled side wall; and a filter member extending the length of said tank from the top of said angled side wall to said edge of said partition, said filter member being substantially parallel to said angled side wall; whereby said partition divides said tank into an upper portion and a lower portion with fluid communication therebetween through said filter member, means adapted for connecting said upper portion of said tank to the waste discharge of a marine toilet; and means adapted for connecting said lower portion of said tank to said marine toilet to permit recirculation of the fluid for flushing.
Claim 3
Dependent Claim
44 words
In the tank of claim 1, said lower connecting means including a flush intake conduit, said flush intake conduit being adapted to be connected to the fluid intake of the marine toilet, whereby flushing liquid is withdrawn from said lower portion of said tank.
Claim 4
Dependent Claim
52 words
In the tank of claim 1, said upper connecting means including a waste outlet conduit communicating with said upper portion of said tank, said waste outlet conduit being adapted to be connected to the waste outlet of the marine toilet, whereby discharge wastes are applied to said upper portion of said tank.
Claim 5
Dependent Claim
44 words
In the tank of claim 3 said lower connecting means including a flush intake conduit, said flush intake conduit being adapted to be connected to the fluid intake of the marine toilet, whereby flushing liquid is withdrawn from said lower portion of said tank.
Claim 6
Dependent Claim
120 words
The tank of claim 1 further including means for cleaning said tank, said means comprising: a backflush conduit adapted to be connected to a source of clean fluid, said conduit extending into said lower portion of said tank; and a waste discharge conduit in said upper portion of said tank, having an intake adjacent said partition, said waste discharge conduit adapted to be connected to the inlet of a discharge pump, whereby clean fluid applied through said backflush conduit recirculates fluid through said filter member in the reverse direction and agitates the contents of said upper portion of said tank, eNabling a more complete evacuation of the contents of said upper portion of said tank by said waste discharge conduit.
Claim 7
Dependent Claim
52 words
In the tank of claim 1, said top being wider than the bottom, and the tank being constructed and arranged so that its longitudinal axis may be placed substantially parallel to the boat longitudinal axis whereby rolling motion of the boat agitates the fluid contents to prevent clogging of the filter member.
Claim 8
Dependent Claim
167 words
A holding and recirculating tank adapted to convert a marine toilet into a self contained, recirculating toilet system, the tank comprising: an elongated tank body having an axis, and adapted to be installed with said axis parallel to a boat longitudinal axis; a partition member located in said tank substantially parallel to and spaced apart from the bottom of said tank, said partition having an edge separated from one of the elongated walls of said tank for separating said tank into an upper and lower portion; and a filter member extending from said partition edge and coupled to said elongated wall to provide fluid communication between said upper and lower portion of said tank through said filter member, said tank having an inclined side wall extending upwardly and outwardly from the base, and said filter member being substantially parallel to said inclined wall, and means enabling connection of said upper and lower portions of said tank to said marine toilet for permitting recirculation of fluid for flushing.
Claim 9
Dependent Claim
167 words
A holding and recirculating tank adapted to convert a marine toilet into a self contained, recirculating toilet system, the tank comprising: an elongated tank body having an axis, and adapted to be installed with said axis parallel to a boat longitudinal axis; a partition member located in said tank substantially parallel to and spaced apart from the bottom of said tank, said partition having an edge separated from one of the elongated walls of said tank for separating said tank into an upper and lower portion; and a filter member extending from said partition edge and coupled to said elongated wall to provide fluid communication between said upper and lower portion of said tank through said filter member, said tank having an inclined side wall extending upwardly and outwardly from the base, and said filter member being substantially parallel to said inclined wall, and means enabling connection of said upper and lower portions of said tank to said marine toilet for permitting recirculation of fluid for flushing.
Claim 10
Dependent Claim
48 words
The tank of claim 7, wherein said means enabling connection including a flush intake conduit extending through said partition, said flush intake conduit being adapted to be connected to the fluid intake of the marine toilet, whereby flushing liquid is withdrawn from said lower portion of said tank.
Claim 11
Dependent Claim
52 words
The tank of claim 7, wherein said means enabling connection including a waste outlet conduit communicating with said upper portion of said tank, said waste outlet conduit being adapted to be connected to the waste outlet of the marine toilet, whereby discharged wastes are applied to said upper portion of said tank.
Claim 12
Dependent Claim
48 words
The tank of claim 9 wherein said means enabling connection including a flush intake conduit extending through said partition, said flush intake conduit being adapted to be connected to the fluid intake of the marine toilet, whereby flushing liquid is withdrawn from said lower portion of said tank.
Claim 13
Dependent Claim
124 words
The tank of claim 7 further including means for cleaning said tank, said means comprising: a backflushing conduit adapted to be connected to a source of clean fluid, said conduit extending through said partition and into said lower portion of said tank; and a waste discharge conduit in said upper portion of said tank, having an intake adjacent said partition, said waste discharge conduit adapted to be connected to the inlet of a discharge pump, whereby clean fluid applied through said backflush conduit recirculates fluid through said filter member in the reverse direction and agitates the contents of said upper portion of said tank, enabling a more complete evacuation of the contents of said upper portion of said tank by said waste discharge conduit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |