Abstract: A sewage system comprising a network of sewage sumps that temporarily store sewage produced in a dwelling or other structure, each of said sumps preferably comprising a computer controller for operating a pump in the sump such that the sewage collected in the sump may be pumped out of the sump and into the collection system in a controlled manner to regulate the flow of sewage material in the system. The regulation of the sewage flow permits the efficient operation of a sewage treatment facility that receives sewage from the network of sewage sumps by insulating the facility from the peak burdens that would be placed on it at certain times of day in the absence of a system that regulates sewage flow into the system at the source of the sewage.

Abstract: A hydraulically operated industrial machine has hydraulic work components such as a boom, bucket or the like, and also uses hydraulic motors for propelling the machine. The motors and cylinders are controlled by pilot pressure valves to provide pressure to pilot operated valves. A pressure reducing valve is utilized for providing hydraulic fluid at a pilot pressure to the pilot valves. The reducing valve regulates the pilot pressure as a function of one or more parameters indicating the consumption of hydraulic power in the system, such as drive engine speed, or other signals including oil temperature, throttle position, and, if desired, feedback signals from the system.

Abstract: A vest for a human body has an air core coupled to a pulsator operable to subject the vest to pulses of air which repetitively applies and releases pressure to the body. The vest has a cover having a pocket accommodating the air core. The pulsator has diaphragms connected to a d.c. electric motor with a rotary to reciprocating motion transmitting mechanism operable to generate air pulses in the air core.

Abstract: A safety system for use in a motor vehicle fuel system in which fuel flow components generate electrostatic charges. The system includes a fuel pump that has a housing that is electrically connected to ground potential and an electrically conductive safety device that connects each fuel flow component to the fuel pump housing for discharging static electricity to ground through the fuel pump housing.