Raymond J Carolan

US Patent:

40633152, Dec 20, 1977

Filed:

Aug 16, 1976

Appl. No.:

5/714928

Inventors:

Raymond Jerome Carolan - Seattle WA
Bjorn Roar Kristoffersen - Kirkland WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

E03D 5016

US Classification:

4 10

Abstract:

A vacuum flush waste disposal system for aircraft; wherein, the required vacuum is acquired at altitude through the differential pressure between the aircraft cabin pressure and the ambient pressure above approximately 15,000 feet. When the aircraft is below this altitude or on the ground, the vacuum is provided by a blower. For flushing the toilet bowl, a timing device is initially actuated and functions: to introduce a recirculated flush fluid into a flush ring in the upper portion of the toilet bowl; and to open a drain in the lower portion of the toilet bowl, leading to the vacuum waste line; whereby, the waste and flush water are rapidly propelled through the waste line towards a centrally located holding tank, by the differential pressure acting upon it. Once in the holding tank, the waste fluid is filtered out for further use as the recirculated flush fluid.

US Patent:

41142039, Sep 19, 1978

Filed:

Jul 22, 1977

Appl. No.:

5/818027

Inventors:

Raymond Jerome Carolan - Seattle WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

E03D 100
E03D 300
E03D 500

US Classification:

4317

Abstract:

A self-contained, recirculating flush liquid, type of water closet for passenger aircraft; wherein, the means for periodically draining the contents of the waste holding tank, comprises an inverted U-shaped tube which is separated at the bend of the U-shape or elbow thereof, into approximately two half-parts. These half-parts are joined by a movable or flexible connection in order that one of the half-parts can be moved relative to the other half-part. One end of the U-shaped tube is rigidly fixed to and projects out from the bottom of the tank; and the other movable half-part has an intake nozzle opening which when it is positioned at the bottom surface of the tank, it is at an operative waste removal position, and when it is moved to a raised position where the intake nozzle opening is at the top of the tank, the removal of waste from the tank is prevented.

US Patent:

39953289, Dec 7, 1976

Filed:

Dec 13, 1974

Appl. No.:

5/532569

Inventors:

Raymond J. Carolan - Seattle WA
Bjorn R. Kristoffersen - Kirkland WA

Assignee:

The Boeing Company - Seattle WA

International Classification:

E03D 5016

US Classification:

4 10

Abstract:

A vacuum flush waste diposal system for aircraft; wherein the required vacuum is acquired at altitude through the differential pressure between the aircraft cabin pressure and the ambient pressure above approximately 15,000 feet. When the aircraft is below this altitude or on the ground, the vacuum is provided by a blower. For flushing the toilet bowl, a timing device is initially actuated and functions: to introduce a recirculated flush fluid into a flush ring in the upper portion of the toilet bowl; and to open a drain in the lower portion of the toilet bowl, leading to the vacuum waste line; whereby, the waste and flush water are rapidly propelled through the waste line towards a centrally located holding tank, by the differential pressure acting upon it. Once in the holding tank, the waste fluid is filtered out for further use as the recirculated flush fluid. The holding tank is positioned within the fuselage of the aircraft and has a vertically oriented filter screen separating the tank longitudinally into a fore and aft compartment, so that the acceleration forces of take-off and the deceleration forces of braking upon landing causes the fluid to slosh fore and aft through the filter screen to aid in the filtration process.