Alliedsignal Inc.

The Bendix Corporation

Dometic Corporation

Sealand Technology, Inc.

Alliedsignal Truck Brake Systems Company

Dometic Sanitation Corporation

Robert D Krieder

Kenneth L Cramer

James A Sigler

Nathan A Snyder

Steven L Miko

Randall Thomas

Edward F McKiernan

Patrick J O'Keefe, Jr

Cheryl L Greenly

Patrick J Curran

Pamela Rudolph

Miguel O Martinez

Otto E Erbacher

A portable toilet is provided comprising a bowl provided with an outlet and at least one spout. A flush tank is adapted to store a fluid, wherein the flush tank is adapted to be pressurized. A manually-actuated pump is in sealed communication with the flush tank, wherein the pump is adapted to cause the flush tank to become pressurized. A pressure relief valve adapted to release pressure from the flush tank. A manually-actuated flush valve is in sealed communication with the flush tank and is normally biased to a closed position. The flush valve includes a fluid outlet connected to the at least one spout and a fluid inlet. A flush valve actuator is disposed outside of the flush tank and is adapted to actuate the flush valve, wherein actuation of the flush valve actuator causes the flush valve to open to permit pressurized fluid contained within the flush tank to be delivered through the at least one spout.

Portable toilet

A toilet and toilet system suitable for a boat, recreational vehicle, bus or the like is operated via a microprocessor controller to effect a convenient and efficient operation. The toilet includes a base assembly having an electrically-operated flush valve that opens and closes a passage to a waste receiving area. A flush lever assembly has a flush lever displaceable from a neutral position toward one of a 'flush' position and an 'add water' position. In this context, the flush lever initiates a flush cycle in the &#x201c;flush&#x201d; position and initiates an add water cycle in the &#x201c;add water&#x201d; position. The controller communicates with a water inlet valve, the flush valve and the flush lever assembly. In operation, the controller opens and closes the water inlet valve and controls a position of the flush valve in accordance with a position of the flush lever.

Toilet and method of operation

A toilet () and toilet system suitable for a boat, recreational vehicle, bus or the like is operated via a microprocessor controller to effect a convenient and efficient operation. The toilet includes a base assembly () having an electrically-operated flush valve that opens and closes a passage to a waste receiving area. A flush lever assembly () has flush lever displaceable from a neutral position toward one of a 'flush' position and an 'add water' position. In this context, the flush lever initiates a flush cycle in the &#x201c;flush&#x201d; position and initiates an add water cycle in the &#x201c;add water&#x201d; position. The controller communicates with a water inlet valve, the flush valve and the flush lever assembly. In operation, the controller opens and closes the water inlet valve and controls a position of the flush valve in accordance with a position of the flush lever.

An electronically controlled compressed air system (10) includes an air dryer (16) which dries compressed air before the compressed air is communicated to a reservoir (26). The air dryer (16) includes a desiccant (18) which is purged by using air stored in the reservoir (26). A pressure transducer (13) is installed on the reservoir (26) and transits an electrical signal, indicative of the pressure in the reservoir (26) to an electric controller (11). Electric controller (11) transmits signals at various selected pressure levels to solenoid value (28) to control loading and unloading of the compressor (12), to solenoid valve (36) to control purging of the air dryer (16), and to the warning light (40) to alert an operator of a low air pressure condition. The valve (36) is operated to permit purging only when the compressor (12) is unloaded and only until a reservoir pressure is reached which is a predetermined pressure drop below the reference pressure level at which the compressor (12) is unloaded, whereupon purging is terminated.

Electronic control of compressor unloader and air dryer purge

A compressed air system includes an electronic control which controls enabling and disabling of the compressor in response to pressure level variations in the system storage reservoir. A humidity sensor is installed in the system reservoir and generates a signal which varies as a function of the humidity of the compressed air in the reservoir. The control unit includes a comparator which compares the signal generated by the humidity sensor with a reference signal and generates a humidity control signal when the humidity of the air in the reservoir exceeds the reference level. The control unit responds to compressor disabling by causing the system air dryer to regenerate or purge for a predetermined time period, even if the compressor is unloaded for time periods greater than the predetermined time period.

Charge/purge control system for air dryer with humidity control

A compressed air system includes an electronic control which controls enabling and disabling of the compressor in response to pressure level variations in the system storage reservoir. The control unit responds to compressor disabling by causing the system air dryer to regenerate or purge for a predetermined time period. The timing period of a charge timer is initiated when the compressor is enabled. When the charge timer has timed out, the compressor is disabled and the air dryer purged for the predetermined time period.

Charge/purge control system for air dryer having limited charge time

A compressed air system includes an electronic control which controls enabling and disabling of the compressor in response to pressure level variations in the system storage reservoir. The control unit responds to compressor disabling by causing the system air dryer to regenerate or purge for a predetermined time period, even if the compressor is unloaded for time periods greater than the predetermined time period. If the compressor comes back on load before expiration of the predetermined time periods, purging of the air dryer is immediately discontinued. Accordingly, the air dryer is never purged for long periods of time, thereby conserving the desiccant used in the air dryer, and also increasing the efficiency of the engine which operates the air compressor, since turbocharged engines normally communicate the output of the turbocharger to the air compressor, and venting a portion of the turbocharger for long periods of time can significantly decrease engine efficiency.

Charge/purge control system for air dryer

An automatic speed control for a heavy duty vehicle includes a controller which regulates communication between a compressed air source and an air actuated throttle mechanism. The controller generates a control signal which is a function of a speed error signal and the position of the air actuated throttle to regulate the compressed air source. The speed error signal is calculated as the difference between a commanded speed signal and an actual speed signal. To generate the control signal, the error signal and throttle position signal are operated on by different lead-lag transfer functions. These lead-lag terms are thereafter combined with a proportional speed error term to yield the desired control signal. The system further includes a throttle control feature for powering auxiliary equipment when the actual speed signal is zero. Another feature of the control limits the commanded speed signal to a set value when it exceeds a predetermined limit.

Automatic speed control for heavy vehicles

An automatic speed control for a vehicle having a source of compressed air, such as a heavy duty truck, includes a logic controller which controls a pair of solenoid valves to regulate communication between the compressed air source and an air actuated throttle. The controller is responsive to initiation of speed control by actuation of the appropriate switch by the vehicle operator to use inputs representing wheel speed (or engine speed) and the position of the vehicle throttle to generate an error signal. The controller compares the error signal with a signal representing a desired or memorized speed set by the vehicle operator and controls the air actuated throttle accordingly.

Growing community of inventors

Sullivan, OH, United States of America

Robert D Krieder