Patent US3570503A successfully refreshed from Google Patents.
US3570503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-lift unit for rapid servicing of aircraft-installed lavatories
Assignee: Individual
•
Filing: 1968-11-15
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Granted: 1971-03-16
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Expires: 1988-11-15
Abstract
Abstract Self-contained mobile lavatory servicing and sanitation unit which expedites the cleaning of aircraft lavatory waste receptacles through a system of operably connected tanks and apparatus providing means for removal and carrying away of wastes from the aircraft and cooperating means for water-flushing of the receptacles and for transferring the wastes and the flushed material into the mobile unit, and cooperating means for chemically sanitizing and deodorizing the receptacles together with means for emptying of the removed wastes from the mobile unit and means for flushing, sanitizing and deodorizing the waste removal portion of the unit after emptying, the unit being vehicle supported and adapted to have major portions elevator positionable to closely adjacent the cleanout plumbing connections of the aircraft and provided with work stations having means for supporting an operator in an elevated position on the apparatus for operating the controls for the unit and the aircraft plumbing connections so that rapid, economic servicing of sanitary facilities on the aircraft can be accomplished in a unitary operation while the aircraft is positioned on the runway.
Inventors
- 👤 Alfred E Deboliac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:48
CPC Classifications
B; B66; B66F; B66F11/00; B66F11/04; B66F11/042; B64; B64F; B64F5/00; B64F5/60
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
276 words
A mobile unit for positioning a waste removal and cleaning apparatus so that waste can be removed from an aircraft lavatory waste storage receptacle and the receptacle cleaned after waste removal in a continuous operation which comprises a mobile vehicle; an elevator base operably positioned on said vehicle and adapted to be raised and lowered in relationship thereto; a waste removal and cleaning apparatus means positioned on said elevator base having a waste receiving tank means for retaining waste removed from said lavatory waste storage receptacle, a cleaning liquid holding tank means for supplying cleaning liquid to the evacuated lavatory waste storage receptacle, a first conduit means operably connected to said waste receiving tank at one end and having at its other end a connector means adapted to be attached to an outlet means of said lavatory waste storage receptacle positioned in said aircraft, a second conduit means operably connected to said cleaning liquid holding tank means at one end and having at its other end a connector means adapted to be attached to an inlet of said lavatory waste storage receptacle positioned in said aircraft, pump means operably connected to said second conduit means for moving cleaning liquid from said cleaning liquid holding tank into said receptacle in said aircraft to flush it after waste has been removed; platform means positioned on said elevator base for supporting an operator; and control system means on said waste removal and cleaning apparatus for raising the device to position it for waste removal and cleaning of said receptacle, for operating said pump means during cleaning of said receptacle, and for lowering the apparatus after cleaning has been completed.
Claim 2
Dependent Claim
276 words
A mobile unit for positioning a waste removal and cleaning apparatus so that waste can be removed from an aircraft lavatory waste storage receptacle and the receptacle cleaned after waste removal in a continuous operation which comprises a mobile vehicle; an elevator base operably positioned on said vehicle and adapted to be raised and lowered in relationship thereto; a waste removal and cleaning apparatus means positioned on said elevator base having a waste receiving tank means for retaining waste removed from said lavatory waste storage receptacle, a cleaning liquid holding tank means for supplying cleaning liquid to the evacuated lavatory waste storage receptacle, a first conduit means operably connected to said waste receiving tank at one end and having at its other end a connector means adapted to be attached to an outlet means of said lavatory waste storage receptacle positioned in said aircraft, a second conduit means operably connected to said cleaning liquid holding tank means at one end and having at its other end a connector means adapted to be attached to an inlet of said lavatory waste storage receptacle positioned in said aircraft, pump means operably connected to said second conduit means for moving cleaning liquid from said cleaning liquid holding tank into said receptacle in said aircraft to flush it after waste has been removed; platform means positioned on said elevator base for supporting an operator; and control system means on said waste removal and cleaning apparatus for raising the device to position it for waste removal and cleaning of said receptacle, for operating said pump means during cleaning of said receptacle, and for lowering the apparatus after cleaning has been completed.
Claim 3
Dependent Claim
52 words
The mobile unit of claim 1 in which a plurality of cleaning liquid holding tanks are provided in said apparatus, one of said tanks adapted to contain a supply of flushing water and another adapted to contain a supply of liquid chemicals so as to provide for cleaning and sanitizing the receptacle.
Claim 4
Dependent Claim
25 words
The mobile unit of claim 2 in which a proportioning means is provided to regulate the amount of water to chemicals supplied in the receptacle.
Claim 5
Dependent Claim
32 words
The mobile unit of claim 2 in which said liquid chemicals when used are conveyed into the flow of water after removal from the water tank and before entry into said receptacle.
Claim 6
Dependent Claim
29 words
The mobile unit of claim 4 in which a proportioning injector means regulates the amount of liquid chemicals injected into the flow of water from the flushing water tank.
Claim 7
Dependent Claim
65 words
The mobile unit of claim 2 in which said plurality of cleaning liquid holding tanks are connected to said second conduit through a three-way control valve positioned therein to provide for selectivity among said cleaning liquid holding tanks so as to direct liquid from one tank or a mixture from two tanks through the said second conduit means into the aircraft lavatory waste storage receptacle.
Claim 8
Dependent Claim
95 words
The mobile unit of claim 6 in which the second conduit means has a second three-way control valve connected therein downstream of said first three-way control valve and a third conduit means operably connecting said second three-way control valve and the waste receiving tank so that the said first three-way control valve can be set to select liquid from one of or two of said cleaning liquid holding tanks and the second three-way control valve selectively set to direct the flow of liquid either to the lavatory waste storage receptacle or the waste receiving tank.
Claim 9
Dependent Claim
53 words
The mobile unit of claim 1 in which a liquid flow meter is positioned in said second conduit, said meter having a resettable quantity-gaging dial so that the amount of cleaninG liquid pumped from said cleaning liquid holding tank can be sight-measured and controlled during the cleaning of the lavatory waste storage receptacle.
Claim 10
Dependent Claim
109 words
The mobile unit of claim 1 in which said second conduit has a bypass return conduit in it for returning cleaning liquid to said holding tank after the desired amount of liquid has been pumped into said receptacle, said bypass return conduit having a solenoid operated valve in it responsive to the operation of said pump means so that when the pump means is in operation, the valve is closed, and when the pump means has stopped, the valve is open to return cleaning liquid to the holding tank, thus preventing spillage of the liquid on disconnecting said second conduit from the inlet to said lavatory waste storage receptacle.
Claim 11
Dependent Claim
32 words
The mobile unit of claim 1 in which said waste receiving tank has operably connected thereto a dumping valve positioned in the bottom portion thereof for gravity discharging waste from said tank.
Claim 12
Dependent Claim
67 words
The mobile unit of claim 10 in which said dumping valve is a swivel joint valve positioned in an elongated dumping tube operably connected to the bottom of said tank so that when the dumping tube is in an upright position, the swivel joint valve is closed, and when the dumping tube is downwardly extended, the swivel joint valve is open for dumping waste through said tube.
Claim 13
Dependent Claim
34 words
The mobile unit of claim 1 in which said first and second conduits have flexible end portions for making connections with the outlet means and inlet means, respectively, of said lavatory waste storage receptacle.
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US2787278A
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US3378025A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |