Abstract: A motor vehicle fluid power circuit is provided with a constant displacement pump, a control valve, an open center steering valve, a hydraulic ratio type brake booster, and a ratio override valve. The control valve includes a shuttle piston which controls fluid flow between the pump and the brake booster, between the pump and the steering valve, and between the brake booster working chamber and the downstream side of the steering valve. The brake booster includes a trapped volume chamber in which a larger area input rod moves to provide greater movement of an output rod and power piston assembly.

Abstract: An inflatable, weighted boat fender is disclosed which is particularly suitable for protecting the hull of the boat during passage of the boat through locks. The fender comprises a sealed, flexible, fluidtight bag formed from two elongated sheets of flexible fluidtight material sealed together about their peripheries and having a transverse seal which forms first and second sealed compartments. The transverse seal is located closer to one end of the bag than the other. First and second ports are respectively provided in the first and second compartments for admitting air to the first compartment and for admitting a heavier substance such as water to the second compartment.

Abstract: Mixing means in the form of a torpedo for an injection molding machine having a plurality of alternately isolated and intersecting flow paths for repeatedly dividing and recombining material flow streams to achieve uniform properties throughout the material. The paths are formed as right and left-hand helical channels on the circumference of the torpedo body, with the helixes of one hand having a pitch different from that of the other such that the flow paths intersect in a pattern which is bilaterally asymmetrical with respect to an axial net flow direction. The nonsymmetrical arrangement is formed to provide substantially greater mixing action than that obtainable with similar symmetrical arrangements.

Abstract: A unitary tubular fitting body and cooperating mandrel for installation on a blind wall. The body includes an axially collapsible tube portion which during installation draws up the body into alignment with the wall. The body includes a frangible ring dimensioned to fail after adequate compression force is applied on the collapsing tube portion for full sealing engagement with the wall. Failure of the ring releases the mandrel and prevents overtightening of the fitting.BACKGROUND OF THE INVENTIONThe invention relates to a tubular fitting and method for its installation, and, more specifically, to a fitting and method particularly suited for use where access to only one side of a wall is available.PRIOR ARTIt is often desirable to mechanically secure a tubular fitting in fluid-tight relation to a hole in an otherwise imperforate wall to provide communication between zones on opposite sides of the wall.

Abstract: A device for localizing neutrons is made up of modular elements placed within an enclosure which is transparent to neutrons and filled with a gas, each modular element being constituted by a series of parallel wire anodes, means for producing an electric field around each anode wire so as to give rise to charge multiplication when an electron penetrates into the field, a cathode placed in the proximity of the array of wire anodes, means for attaching the anode wires to the cathode walls and means for providing electrical insulation between the cathode and each anode wire.

Abstract: A diagnostic substance for cholescintigraphy which is formed by the reaction of pyridoxal and amino acids labelled with a radionuclide, in pyrogen-free water, the reaction product being adjusted to a pH of 8 to 9 and then autoclaved and cooled to produce a sterile, pyrogen-free non-antigenic solution for injection for biliary scanning.

Abstract: A radiochemical ligand binding assay for methotrexate is provided. A binder factor comprising a partially purified dihydrofolic acid reductase preparation is employed. The binder factor is conveniently prepared by homogenizing a factor containing animal organ such as liver, and extracting with isotonic saline and ammonium sulfate. A binder cofactor, NADPH.sub.2, is also employed in the binding reaction. The procedure contemplates both direct and sequential assay techniques, and it is not interfered with by vast excesses of many natural folate derivatives.

Abstract: A tensioner unit in a thread supply path for a domestic sewing machine which by its structural arrangement and location on an upper face of a machine provides a feed path across the frontal face of the machine for full visibility and accessibility of the thread without obstructing the view of the work area. The feed path through the tensioner unit is also arranged to provide a wrap of thread through the unit about a vertical axis in excess of 180 degrees to provide stable frictional engagement of the thread in the tensioner unit.

Abstract: A roll film winding mechanism is provided for film of the type which is wound on a flanged winding spool with superposed liner paper for protection against light intrusion and accidental exposure. The winding mechanism includes a tension roller disposed between a support member for guiding the film and the spool. The tension roller is arranged to bias the film together with the liner paper to provide a controlled winding tension, and to inwardly curl the longitudinal edges of the film and liner paper toward the spool shaft as they are wound to assure a secure light seal.

Abstract: A cryostatic device employed mainly in infrared spectrometry comprises a vertical open-topped vessel having heat-insulating reflecting walls and containing a cryogenic liquid, an outer enclosure surrounding the vessel and provided with at least one opening for establishing a communication between the external atmosphere and a region of the enclosure opposite to the lower portion of the vessel, means for introducing cryogenic liquid into the vessel and means whereby the sample to be studied is maintained in position and cooled by said cryogenic liquid.

Abstract: An insulating blanket is disclosed in which a semi-rigid mat of glass fibers is bonded on one side to a facing material. Lateral cuts are formed in the mat extending from the opposite side thereof toward the side on which the facing is bonded. Such cuts allow the facing to bend with a hinge-like manner when the insulating blanket is rolled, permitting the lamination of the facing and mat and the rolling of the laminate prior to the setting of the adhesive. The preferred method and apparatus for forming such insulating blanket is also disclosed.

Abstract: A method and apparatus for forming shouldered tubular rivets is disclosed in which three forming operations are provided, two of which are performed in a single die station. In the first operation, the head end of the blank is squared and the inner end is trapped extruded. In the second operation, both the shoulder and the inner end of the blank are squared. During such second operation, the volume required to form the entire shank is confined within the die and the projecting portion of the blank is headed so that variations in blank volume appear as variations in the head. In the last or third operation, the tubular section is extruded on the inner end of the blank. An apparatus for performing the method is disclosed which permits the accurate positioning of a sleeve and an extrusion pin with respect to the die during the second operation to insure proper squaring of the inner end of the blank and the confinement of the exact volume of material required to form the entire shank of the rivet.

Abstract: A method for producing a forming tool having a cutting edge which comprises the steps of preparing a metal mount having a cutting blade support portion of predetermined shape, fixedly mounting a superhard cutting blade blank having an area substantially greater than that of said support portion, cutting said cutting blade blank along the contour of said support portion and edging said cutting blade blank along a predetermined edge portion thereof.

Abstract: A motor vehicle hydraulic brake system includes a front brake circuit and a rear brake circuit. The rear brake circuit includes a blend back proportioning valve which controls the pressure in the rear brake circuit. The blend back proportioning valve includes a proportioning piston which cooperates with a valve seat to maintain increases in rear brake pressure proportional to but less than increases in master cylinder pressure between a first predetermined pressure and a second predetermined pressure. A blend back spool moves the valve seat away from the proportioning piston to equalize master cylinder pressure and rear brake pressure when the second predetermined pressure is reached.

Abstract: A piston and cylinder actuator is disclosed embodying means to control the acceleration and deceleration of the piston as it approaches the ends of its stroke. Such actuator is also disclosed as an intermittent drive for a machine system in which at least part of the drive connection is provided by a friction drive. The acceleration and deceleration control is arranged to prevent slippage in the drive. The acceleration and deceleration control includes a land positioned on each side of the piston, each formed with a plurality of axially spaced orifices. As the piston approaches one end of its stroke, one land projects through an associated seal which operates to progressively isolate the orifices from the main chamber to control deceleration. Such orifices are progressively uncovered as the piston moves away from its end position, and in one embodiment provides controlled acceleration.

Abstract: There is provided an improved apparatus and method for relatively low volume batch treatment and disposition of sewage or toilet wastes especially from passenger vehicles such as railway cabooses, motor houses, or other passenger-carrying vehicles. The apparatus is characterized by the ability to operate without moving parts for sterilizing, disintegrating, and discharging an aqueous sewage composition including human feces and includes an enclosed chamber having an inlet for the sewage composition at the top of the chamber, separate electrodes in the lower portion of the chamber, a standpipe having an inlet from the chamber and communicating with the upper portion of the chamber and discharging exteriorly of the chamber, and means for impressing a potential difference across the electrodes.

Abstract: A proportional detector for the localization of particles comprises a leak-tight chamber filled with fluid and fitted with an electrode of a fisrt type consisting of one or more conducting wires and with an electrode of a second type consisting of one or more conducting plates having the shape of a portion of cylindrical surface and a contour which provides a one-to-one correspondence between the position of a point of the wires and the solid angle which subtends the plate at that point, means being provided for collecting the electrical signal which appears on the plates.

Abstract: There is provided a rapid and less costly radioisotopic assay for measuring the concentration of folate in blood serum. This procedure utilizes .sup.3 H-pteroylmonoglutamate, unlabeled 5-methyl-tetrahydrofolic acid, and a partially purified folate binder, such as for example a folate binder extracted from hog kidney. The procedure involves radioisotopically relating the bound amounts of a labeled folate and a known folate at various concentrations of the known folate in a system containing a predetermined amount of the labeled folate, a predetermined amount of the binder factor for the folates, and a predetermined amount of defolated test serum.

Abstract: A thread-rolling head comprises three crank-like support pieces, each bearing a thread roller, protruding from a support member in which they are mounted. A control member is held unrotatably on the support member while a bearing member held in front of the support member is rotatable and stop means are operative between the bearing and the support member to transmit to the latter a torque received from the workpiece through the thread rollers; the stop means is rendered inoperative when the bearing means is caused by the workpiece to move forwardly, whereby the torque will aid a spring in rotating the bearing member to pivot the support pieces in order to remove the thread rollers from the workpiece.

Abstract: A control system is disclosed for a hot forging machine which is supplied with lengths of stock. The system provides automatic rejection of workpieces cut from the rearward end of one length of stock and the forward end of a subsequent length of stock. The system includes a sensor which laterally deflects the rearward end of a length of stock as such rearward end approaches a control point to produce a signal to reset the system. As the forward end of the subsequent length of stock passes the control point, a second signal is generated to actuate the stock movement measuring system. Stock movement is measured by a measuring roller which engages and is turned by the stock as it moves toward the cutter. The rotation of the measuring roller drives a pulse generator which supplies a signal to a counter.