Abstract: A liquid distributor valve assembly in which an impeller means is disposed in a housing and is rotatable in the housing by the force of liquid entering the housing. A valve assembly is adapted to rotate in the housing in a manner to selectively control the flow of fluid through a plurality of outlets, and a gear arrangement selectively rotates the valve means in response to rotation of the impeller means.

Abstract: A method and laminate for protecting an article from exposure to radiant heat are disclosed. The laminate is formed by adhering a metal coating to one surface of a polymeric film of polyfluoroolefin or fluoroolefin copolymer, having not more than a 50% transmission ratio of visible ray and not less than a 30% transmission ratio of infrared ray. The laminate is adhered to a surface of the article to be protected with the polymeric surface outward.

Abstract: An improved structural arrangement for holding a battery having male and female terminals within the battery compartment of a portable electrical appliance includes two plate springs each connected at one end to the appliance circuitry and carrying, at the other end, one of the circuitry terminals for engagement with the corresponding battery terminal. The terminals of the battery are brought into engagement with the circuitry terminals simply by inserting the battery into the battery compartment against the elastic force of the plate springs. After engagement of the circuitry terminals with the battery terminals, the battery is held securely in place by the elastic force of the plate springs and contact between the mating terminals is likewise secured.

Abstract: A process for producing high precision electrical resistance elements and electrical resistance elements produced thereby are disclosed. The process includes the step of etching a masked metallic layer bonded to an electrically insulating substrate for a time sufficient to etch away substantially all the masking material and a predetermined portion of the metallic material to produce a high precision electrical resistance element having a predetermined ohmic value. Preferably, the masking material has an erosion rate under ion bombardment greater than the erosion rate of the metallic layer and the thickness of the masking material is established as a predetermined function of the metallic layer to be etched away.

Abstract: An A.C. relay system for making and breaking an A.C. power line utilizing an electromagnetic relay having a coil for opening and closing the mechanical switching contacts, a bilateral gated semiconductor such as a triac connected across the contacts, and a control circuit for switching the relay and triac in proper sequence is disclosed. The control circuit comprises a sequence control unit, a phase detector, a triac firing unit and a relay energizing unit. Upon actuation of the sequence control unit, the triac firing unit first fires the triac and then the relay energizing unit energizes the coil to close the mechanical contacts. To break the A.C. power line, the sequence control unit first de-energizes the relay energizing unit and then after a suitable time interval de-energizes the triac firing unit to cut off the gate signal, the triac being turned off when the load current on the power line is below a triac holding current.

Abstract: A transfer mechanism especially suited for use in the handling and transfer of non-ambulatory hospital patients and having at least one thin plate-like support movable from a retracted position relative to a deck outwardly over a bed or other surface to or from which the patient is to be transferred and loaded by extension of the support under the patient. The support plate is extensible beyond its own width and also through a distance larger than the width of a deck structure on which it may be superimposed by virtue of a carriage assembly with which the separator is translated. Friction between the patient and the laterally translated support is avoided by a thin flexible apron covering the support and movable relative to it in a manner such that the surface presented to the patient is either stationary or movable with the separator.

Abstract: An axial-air-gap type semiconductor motor has a disc-shaped rotor, a pair of disc-shaped armatures coaxially located adjacent the opposite faces of the rotor with air-gaps therebetween, a system for detecting the rotational position of the rotor for generating an output proportional to the rotating speed of the rotor, and a semiconductor circuit operable in response to the output from the position-detecting system for controlling the armature current to effect constant-speed control of the rotation of the rotor. The rotor includes a field magnet. Two groups of armature coils are mounted on the face of each of the armature discs facing the rotor. The position-detecting system includes a control band which includes a plurality of control sections and which is synchronously rotatable with the rotor, and detectors which are located at fixed positions along the control band for generating an output in response to the control sections of the control band.

Abstract: A method and apparatus for detecting blockages in one or more vapor flow lines such as vapor recovery lines used in liquid gasoline dispensing systems. The method and apparatus operate by sensing pressure in vapor flow lines and determining whether the frequency of the variations in the filtered rate of change with time of the pressure signal exceeds a preset limit indicating vapor bubbling through a liquid blockage. The method and apparatus also operate to determine whether the pressure signal exceeds a preset limit indicating a blockage condition.

Abstract: Disclosed is a method for producing trans-4-aminomethyl cyclohexane-1-carboxylic acid by heating and isomerizing cis-4-aminoethyl cyclohexane-1-carboxylic acid hydrochloride or a mixture of cis-4-aminomethyl cyclohexane-1-carboxylic acid hydrochloride with trans-4-aminomethyl cyclohexane-1-carboxylic acid hydrochloride in an atmosphere of hydrogen chloride gas and in the absence of a solvent.

Abstract: Disclosed is a composition used as a solvent for dye used in pressure-sensitive copying paper containing an aromatic solvent and an aliphatic di-ester of the formula ROOC (CH.sub.2) COOR wherein R is methyl or ethyl and n is 2-4.

Abstract: A photosensitive material for electrophotography which comprises a conductive support and two or more superimposed photosensitive layers where each layer comprises photoconductive power and a binder, the particle size of the photoconductive powder in an upper layer being greater than that in a lower layer. Both high photosensitivity and high resistance to electrical impact are imparted to the photosensitive material.

Abstract: Antimony pentachloride is recovered from a spent antimony catalyst mixture in a simple manner by bubbling through the spent catalyst mixture an inactive gas such as trichlorotrifluoroethane at an elevated temperature to convert and to remove high melting point or high sublimating point substances as lower boiling point substances; converting fluorinated antimony into chlorinated antimony by means of a chlorinating agent such as carbon tetrachloride; converting antimony (III) into antimony (V) by oxidation with chlorine; and recovering antimony pentachloride by distillation. The antimony pentachloride thus recovered may readily be used as a catalyst for fluorination of a chlorinated hydrocarbon by reaction with hydrogen fluoride.

Abstract: A composition including a diisocyanate and 1-methyl-2-vinyl-4,6-heptadienol. This composition is capable of curing in air at room temperature after aging in a dry nitrogen atmosphere.

Abstract: T-Section device involving a single assembly element permitting multiple mounting combinations. It includes T-section whose blades, on one of its faces, has several antiwarping retaining grooves corresponding to those of the assembly element on which said grooved blade is engaged, said blade being fastened to the assembly element by two dish screws with six hollow surfaces. Said assembly element can assemble as many as four section pieces simultaneously.The invention can be used for making up miscellaneous shelves, furniture items, presentation elements, decorations, etc.

Abstract: Opposed pivotally mounted tamper arms are oscillated by respective single-acting hydraulic piston assemblies controlled by separate hydraulic duplex rotary distributing valves. Fluid supply and return lines for each piston assembly are connected to a source of pressurized hydraulic fluid via the respective rotary valve. Each valve has a stationary ported shell which receives a rotary cylindrical spool having a pair of axially displaced supply and return throughports which alternately register with supply and return line ports in the shell to open and close the connections between the respective piston assembly and the supply and return lines. While the rotary valves are preferably driven by a common drive unit, the relative phase of the oscillations of the arms can be determined by rotationally offsetting one of the spools with respect to the other by the desired phase angle.

Abstract: An energy conservation enthalpy control system utilizes a sensing unit for sensing the wet bulb temperature of sampled air, both outside air and return air, under conditions which approximate adiabatic saturation. The unit includes a housing adapted to pass filtered air through the unit. Water circulated throughout from a sump in the housing is intimately contacted and mixed with the air by a spray or an evaporative pad. A temperature sensing element located in the sump or in the airstream provides a signal indicating the wet bulb temperature of the air under adiabatic saturation conditions. The unit provides the inputs to a control system which operates to coordinate the operations of return air dampers, outside air dampers, and air conditioning equipment.

Abstract: Metallized plastic composite films including a metallic layer, a layer of a polyvinylidene fluoride homopolymer or copolymer and, optionally, a layer of reinforcing or other insulating material are disclosed.

Abstract: Particles of perfectly spherical shape are produced within a vacuum-tight furnace chamber of small size by means of a movably mounted screen for stopping the particles discharged from a molten zone of an ingot which is driven in rotation at high speed. The rigid screen is formed of material having high thermal conductivity and is provided with a consumable coating on the surface which is struck by the particles. The coating is capable of producing a vapor atmosphere around the point of impact so as to modify the interfacial surface tension of the particles on the screen by means of a localized process of calefaction.

Abstract: In a window comprising a stationary frame and a movable sash, the sash is tiltable on an axis that during the opening motion of the sash is displaceable away from the frame substantially parallel to the plane thereof.

Abstract: A compensator of pliable material for establishing a flexible joint in a pipe, comprising at least one flexible layer of fabric material cooperating with a sealing element of limited thermal stability. A layer of flexible steel foil is disposed between the sealing element and at least one thermally and/or chemically stressed side of the compensator.