Abstract: A blind fastener, producing a large blind side bulb, and including a locking ring to hold the fastener in a secured position against stresses. A collapsible barrel segment is disposed on the blind side between the end of the body portion and the head of the pull stem to effect the expansion of the body portion on the blind side. The barrel resists collapsing under loads sufficient to expand and flare the body portion of the fastener to produce the desired large bulb but collapses upon satisfactory flaring having been accomplished. The collapsible barrel, being collapsible along an angle, makes the fastener particularly well-adapted for fastening non-parallel surfaces.

Abstract: A blind fastener particularly suited for mechanically joining composite structures such as graphite and fiber/epoxy matrix with a minimum of blind side damage. A first sleeve of highly ductile material is disposed as a liner about the portion of the nut which passes through the composite materials. The first sleeve extends longer than the thickness of the materials. A second sleeve of measurably less ductility is disposed between the first sleeve and the head of the threaded corebolt. The two sleeves have abutting surfaces which are non-sliding whereby as the nut and corebolt are threadily engaged and the two sleeves are brought into compression, the less ductile sleeve flairs the more ductile sleeve about the nut to create a protected area about the blind side of the materials.

Abstract: A waste disposal system is disclosed which includes apparatus for treating water which has been used for cleaning, washing and for flushing toilets and for disposing of waste products by incineration. The total output of the system to the environment is then reclaimed wash water of tertiary treatment quality plus CO.sub.2 and the ash resulting from the incineration of solid wastes. In alternative embodiments, systems designed for ships, multiple unit dwellings or small communities can operate on a substantially continuous duty cycle with full utilization being made, if desired, of the heat energy required for the incineration process, and for substantially reducing fresh water quantity requirements in all such installations through the use of recirculating toilets.

Abstract: A blind fastener having a rivet sleeve, a core bolt, an expansible sleeve integral with the rivet sleeve, and a locking ring. The core bolt extends through the rivet sleeve and includes a sleeve expanding portion abutting against the sleeve with an enlarged stop ring at the end of the expanding portion. The ring encircles the core bolt and is disposed in a throughbore in the head of the rivet sleeve. The ring is split and has an internal chamfer for facilitating assembly regardless of irregularities on the core bolt. The core bolt has a stop thereon for preventing movement of the ring away from the head of the rivet sleeve toward a threaded portion of the core bolt.

Abstract: A dual polarized antenna couplet, comprised of a vertical quarter-wavelength radiator driven at its lower end and centered on a half-wavelength horizontal dipole radiator drooping its ends about 45.degree. from the center where it is driven in phase with the vertical radiator, produces a polarized wavefront at an angle between the vertical and the horizontal, such as 45.degree. when both are driven equally, with 1.5 db bi-directional gain in the horizontal pattern and in the vertical pattern as well. A similar parasitic couplet is used as a reflector behind the driven couplet, and two or more parasitic couplets are used as directors in front of the driven couplet. The elements of the antenna are coated with dielectric material to achieve a shortening effect of about 11% over the normal lengths of the antenna elements otherwise required.

Abstract: A human waste storage and disposal system for railroads including a toilet bowl, a discharge outlet connected to the bowl, a flushing fluid inlet for flushing the bowl and a vertically disposed receiver coupled to the outlet for receiving the contents discharged from the bowl. A macerator is coupled to both the receiver and a storage tank for withdrawing waste from the receiver, macerating the same and discharging it into the storage tank. Suitable controls are provided for disposing of the macerated waste in the tank in situ or on demand.

Abstract: A square-loop directive antenna of half wavelength circumference is provided with improved front-to-back ratio and gain by placing capacitive reactances for 90.degree. phase shift in the sides, instead of inductive reactances as in the past, and with further improved front-to-back ratio and gain by placing divided reactances (inductive or capacitive) in the sides with just enough reactance to provide a phase shift of 22.5.degree. next to the driven side of the loop and the balance (90.degree.-22.5.degree.) next to the parasitic side of the loop.

Abstract: A macerator pump is disclosed having a collector housing for receiving waste material therein, a positive displacement pump coupled to the housing with an apertured plate separating the same, and a motor coupled to the pump for actuating the same and terminating in the housing with a cutting blade rotatable over the plate. The blade may be continually biased against the plate and the plate may include means for cleaning the blade by kicking any waste material not cut by the blade to a size sufficient to pass through the apertures back into the interior of the collector housing. The blade may also have reversible cutting edges.

Abstract: A sewerless recirculating toilet and human waste storage system wherein human waste products and a flushing fluid of a specific gravity less than water are received from a commode, the waste products are separated from the flushing fluid, the separated waste products are stored indefinitely without additional treatment in a state of suspended animation for possible subsequent by-products recovery therefrom and the separated flushing fluid is stored on top of the separated waste products until a portion thereof is recycled back into the commode in a purified state for flushing the commode.

Abstract: A portable building structure, wherein a floor section supports corner posts which receive wall panels, the corner posts supporting a ceiling structure. Within the building structure is a portable toilet and a vent pipe extends upwardly through the ceiling structure. The floor structure, corner posts and ceiling structure are readily separable to render the building structure portable.

Abstract: Improvements in a recirculating toilet system wherein at least one human waste receiving receptacle, such as a urinal or toilet bowl, is provided coupled to a separating tank having a predetermined amount of a non-aqueous flushing fluid of a lower density and specific gravity than water therein. A flushing fluid intake floats on top of a layer of the flushing fluid in the tank with water and human waste below the layer. A motor-activated pump flushing fluid recirculating means is coupled to both the intake and the receptacle for withdrawing flushing fluid from the layer in the tank and flushing the receptacle. The float has a detector for detecting the presence of a predetermined amount of wastewater in the flushing fluid being withdrawn from the tank for flushing the receptacle and for detecting the level of the flushing fluid in the tank and deactivates the pump of the recirculating means when this predetermined amount of wastewater is detected.

Abstract: A non-polluting wastewater evaporation disposal method and system wherein hydrogen gas is electrolytically produced from the wastewater, collected and used as a source of fuel to evaporate the wastewater to thereby convert the wastewater to a disinfected non-polluting sterile solid residue and water vapor. A halogen having an atomic number of between 16 and 54 may also be electrolytically produced from the wastewater and used to disinfect the wastewater.

Abstract: A toilet system for use on vehicles, such as railroad trains and boats, wherein the toilet contents are chlorinated and ground into a slurry of a predetermined size prior to pumping out. The system includes a grinder which recirculates the toilet contents through the grinder for a predetermined period of time. The system cannot operate until a chlorine tablet has been inserted into the toilet. A timer may be provided which shuts off the grinder after the aforementioned period of time. A valve may be provided in the system which can be activated to pump out the ground chlorinated contents of the toilet while grinding the same and will run until the holding tak of the toilet is emptied. The macerated and chlorinated waste treated in this system requires a relatively low amount of chlorine and has a bacteria count so low that the ground and chlorinated waste may be dumped in situ, such as along railroad tracks or in a harbor or the like.

Abstract: A multiple sleeve blind fastener has a relatively large bearing surface on the blind side of the material in which the fastener is to be mounted, such as the skin of an aircraft or the like. The fastener includes a nut on the driving side of the mating hole in the skin into which the fastener is to be inserted. The nut is threaded onto a core bolt which extends into the mating hole and terminates in a head on the blind side. A plurality of sleeves are rotatably mounted on the core bolt between the head and the nut, the sleeves being disposed on the blind side when the fastener is inserted into the mating hole. The nut includes a tapered body portion which also extends through the mating hole from the driving side into the blind side thereto.

Abstract: An improved oil toilet for use with an oil-based flushing fluid including a commode having a bowl portion of the wash-down type having a generally concave inner surface and a flushing manifold at the top thereof. The inner surface is in fluid communication with a trapway having a trap seal therein leading to a discharge outlet. Overflow means are provided intergral with the inner surface for returning overflow from the bowl portion back into the dishcarge outlet. A trap seal is associated with the overflow means for sealing off odors from the discharge outlet. Fluid communication is provided between the trap seal in the overflow means and the manifold for replenishing the oil in the trap of the trap seal in the overflow means.

Abstract: A pumping system for a plurality of recirculating toilets sharing a common tank is described. A variable volume pump has a by-pass valve which is controlled by a pressure sensor in the flush line, to prevent excessive fluid pressure at the toilets. For applications in which the total number of toilets in the system requires a flow exceeding the output of a single pump, additional, substantially identical pumps are provided. A time delay circuit is connected to a pressure switch for energizing a second pump, if the fluid pressure at the toilets does not exceed a predetermined pressure within a set time interval.

Abstract: A method for preventing a flushing oil used in recirculating toilets from turning yellow and having an offensive odor when contacted with animal waste products containing, among other things, water, carotene, bilirubin, oil soluble unsaturated fats, ammonia, amines and amides such as urea which includes the steps of mixing with said waste products a water-soluble compound having an active chlorine atom whereby said water-soluble chlorine compound is dissolved in the water contained in said waste products and reacts with the ammonia, amines and/or amides to form an oil soluble N-chloro-amine or amine (particularly NCl.sub.

Abstract: An electrolysis unit is used in conjunction with the holding tank of a self-contained recirculating toilet system. The liquid and solid waster material is macerated and recirculated by an external macerator pump as a fine slurry. The slurry material from the lowermost portion of the waste tank is treated by electrolysis producing oxygen and chlorine and an odor free water vapor exhaust. The residue from the electrolysis decomposition unit is periodically removed.