Abstract: A soil extractor is provided that allows a user to displace a drill bit along a drill pathway and collect a sample of soil at a desired depth without contaminating the sample with portions of the drill bit or any other portion of the soil extractor. Bushings protect the extractor itself, as well as the container/bucket from chipping or damage from the drill bit. This protection is what prevents contamination of the soil sample.

Abstract: A water treatment system can be essentially non-electric, and can use gravity to produce water that is safe for drinking. By such a system there can be provided a low cost, reliable way to treat water that is contaminated by water borne pathogens, to reduce or eliminate such contaminants to a safe level, and thereby produce water that is drinkable.

Abstract: An essentially non-electric automatic fluid dispensing system is provided wherein a first induced pressure induces flow of a first fluid, which in the preferred embodiment is a liquid sanitizer. The system further divides the first fluid into a first divided fluid and second divided fluid, said first divided fluid inducing flow into a second fluid located in an airtight container for the second fluid, a regulator valve for varying the second divided fluid, a dispensing valve for displacing the second fluid from the said container under pressure and for varying the flow rate of the said displaced second fluid, and connector for impressing the displaced fluid into a receiving line which in the preferred embodiment is a water circulation circuit.

Abstract: The invention provides a pressure noise suppression system which includes a fluid input circuit 22 for receiving pressure pulses carried by a first fluid which is displaceable; a fluid vessel 10 having a non-linear tube 28 containing a second fluid; a signal generator 18 for transmitting pressure pulses carried by the first fluid for displacing the second fluid; a fluid output circuit 36 having a displaceable third fluid; and a pressure sensor 38 for sensing pressure impulses which pass through the second fluid.

Abstract: A system for automatically controlling the operation of a dryer, periodically produces signals representative of the present temperature of a load to be dried. Heat is applied to the load in response to the signals representative of the present temperature of the load. A circuit determines a time interval for the load to reach one predetermined temperature from another predetermined temperature. That time interval is representative of the present condition of the load. The dryer is shut off when the present condition of the load reaches a predetermined desired condition.

Abstract: A control system for a dryer capable of displacing a load to be dried in at least two directions periodically determines a time interval for the present temperature of the load to reach one predetermined temperature from another predetermined temperature while the load is being displaced in a selected one of the two directions. That time interval is representative of the present condition of the load. A comparater compares the time interval to a reference time interval which is representative of a desired condition of the load. A control circuit applies heat to the load to be dried in response to the result of the comparison. When the time interval equals the reference time interval the load has reached the predetermined desired condition and the dryer is shut off.

Abstract: A system comprising a light source, a plurality of fiber form optical light guides each having one end proximate to said light source and in a position to operatively receive light input therefrom; light projector means proximate to and in a position to receive light from the other end of at least some of said light guides; photodetector means spaced from and optically aligned with said projector means adopted and positioned to receive light projected from said light projection means; sheet or film form material intermittently disposed in moving contact with said light projector means and disposed between said light projector and said photo-detector; and means, operative in response to the modulating effect of said sheet form material on said light projector-photo-detector combination, for performing a function on said sheet form material.

Abstract: A message tape for instrument display systems includes laminations of metallic and plastic materials. Messages are etched through a metallic lamination and dyes are applied through the etchings to provide color coding without introducing dimensional buildups. The dyes are retained by a plastic backing lamination. The tape has the main advantage of being useful at elevated operating temperatures and ancillary advantages of improved image quality and lighting efficiency.