Abstract: A butterfly valve for high pressures in the range of 150 to 2500 pounds per square inch and high temperatures in which the valve member is cammed by axial movement of the stem to the closed position by a cam in a diametral slot in the valve member and the valve member is rotated between closed and opened positions by rotation of the stem and the cooperation of the same cam and slot. The valve disk may be restricted from motion in the axial direction by a retaining cover for the slot. In a preferred form, the valve stem is located between the valve disk and the retaining cover.

Abstract: A method of sterilization for hospital and field use in which an article to be sterilized is submerged in water and ozone, which is supplied from a separate source, is bubbled through said water and over said article so as to provide an ozone concentration in excess of water saturation alone. Such a process can be used to kill even the most difficult bacteria and spores in shorter times than ethylene oxide sterilizers and further can be used for instruments which cannot stand steam temperatures or pressure changes.

Abstract: Expansion joints for concrete highways consisting of precast beams with preformed joints of expansion joint material. The beams are laid crosswise of a strip of highway before pouring the concrete and provide expansion joints which are not affected by the skill of the workmen.

Abstract: A fastener for releasably securing the ends of a drawstring. The fastener has two parts, one for each end of the drawstring. The parts are held together by a dovetail connection which is separated by excessive tension in the drawstring. At least one of the parts is connected to the associated end of the drawstring by a connection which resists movements of the drawstring in the direction to enlarge or loosen the string, but is easily released to permit intentional loosening of the string.

Abstract: A combined wrench, locking pliers and chain clamp using a toggle for the gripping and clamping functions.

Abstract: A drain for a compressed air system which drains the condensate without losing compressed air. The drain has a valve member with a cavity rotatable from a condensate receiving position to a condensate emptying position and a standpipe with its lower end communicating with the cavity in both positions and its upper end closed so that the compressed air which accumulates in the upper end of the standpipe expels the liquid from the cavity in the emptying position.

Abstract: A grommet and strain relief for rubber covered wire and the like comprising a tapered rubber plug having one or more wire receiving bores extending through the plug and each normally sealed by a membrane which is ruptured as the wire is inserted. The ruptured membrane grips the covering of the wire and forms a weatherproof seal.

Abstract: An injection molded bowling pin with a core of thermoplastic plus a blowing agent and a solid skin of thermoplastic per se injected into the mold at one and the same time. The bowling pin is molded by a process wherein a foam material for forming the core is surrounded by and in contact with a nonfoam material and both materials are simultaneously injected into a mold cavity having the shape of a bowling pin. The skin and core may be of the same or of different thermoplastic. The bowling pin is a unitary structure of superior strength and finish with the foamed core and solid skin fused together.

Abstract: A self-contained stretching apparatus with two ropes extending from a collar fitting over the head or neck to a foot receiving stirrup. Each rope has a separate handgrip. By putting one foot in the stirrup and pulling the handgrips, various muscles and tendons may be stretched as part of a warming up exercise.

Abstract: To prevent bait from acquiring human odors in the process of handling the bait during each baiting a fish line, the fisherman's hands are first wiped with an absorbent towel impregnated with an anise odor containing substance. This leaves a residual anise odor on the hands which is picked up by the bait in amounts sufficient to mask human odors. In a convenient form the anise odor containing substance may be added to whatever solution impregnates the damp or wet paper towels commercially available for hand cleaning purposes.

Abstract: Each examination question is individually typed on a standard sized card having uniformly spaced holes along the left-hand margin. The cards are stored in a pool or bank or file from which the questions for the examination are selected by any desired procedure. The selected cards are attached to a card aligner having upstanding pins of the same uniform spacing as the holes in the cards. The cards are arranged on the aligner shingle fashion with the question on each card exposed and with the remainder of each card covered by the card containing the following question.When assembled, the assembly of cards may be photocopied and reproduced by conventional means.

Abstract: A multiplex strobe light in which several ionized gas flash tubes are fed in parallel from a common power and trigger circuit. The common power circuit has a capacitor which is connected across a charging voltage and all of the flash tubes. The common trigger circuit has an SCR gated on by a zener when the charge on the capacitor reaches the desired voltage. Each flash tube has its own transformer with the secondary connected to its control electrode and the primary connected to a capacitor discharged through the SCR so the flash tubes are turned on simultaneously and share the power capacitor discharge.

Abstract: A ceramic dielectric composition is provided including 63.96 to 73.72 mole % SrTiO.sub.3, 17.90 to 24.04 mole % TiO.sub.2, and 8.11 to 12.00 mole % Bi.sub.2 O.sub.3 and further including 0 to 8 weight % NiO, 0 to 1.11 weight % La.sub.2 O.sub.3, 0 to 2.94 weight % SiO.sub.2 and 0 to 0.32 weight % MnO. The said weight %, where mentioned, is with respect to the total weight of the above mentioned three compounds, SrTiO.sub.3, TiO.sub.2 and Bi.sub.2 O.sub.3.These ceramic dielectric compositions have high dielectric constants and low dielectric losses (dissipation factors). Also, the variation of dielectric constant and dissipation factor with respect to temperature, applied AC voltage, and applied DC voltage are very small.

Abstract: An improvement on U.S. Pat. No. 4,058,240 in which the condensate is collected in cavities in the valve member having open ends on opposite sides of a plane normal to the valve member and perpendicular to its axis of rotation. The inner ends of the cavities intersect a vent opening extending along the axis of the valve member. The material of the valve member between the cavities provides better support for the valve seals. The vent provides more rapid drainage of the cavities so the cavities are substantially completely emptied each revolution, thereby increasing the drainage capacity of the device. The ball valve member could be hollow, in which case the entire interior of the ball would be available for collecting condensate.

Abstract: A free piston compressor for gases and liquids in which the positive pressure of the incoming fluid holds the piston against the piston rod during the intake stroke. In a specific form, the cylinder head is a plug of larger diameter than the piston which can be unscrewed to permit removal and replacement of the piston for service.

Abstract: A mixture of powders of barium titanate, a Curie point shifter and a lead titanate-bismuth titanate metal oxide flux which may be fired in a single step at 1800.degree. F. to 2100.degree. F. to produce a dense ceramic body with high dielectric constant. The ceramic is adapted to monolithic, multilayer ceramic capacitors. The low firing temperature minimizes the requirements of high temperature noble electrode material.

Abstract: The method of U.S. Pat. No. 3,096,195, incorporated by reference, is simplified by applying adhesive tape units, each of which consists of an assembly of a horizontal adhesive tape representing a horizontal mortar line for a course of brick to which are fixed vertical tapes spaced to represent vertical mortar lines between adjacent bricks. Apparatus is provided for making the tape units.

Abstract: A spreader nozzle for granular material in which the material is discharged through a grille of horizontal bars forming openings of length to height ratio such that the material will not flow through the openings under the static head of the material but will flow freely through the openings when the grille is vibrated.

Abstract: A take-apart doll in which the doll's eyes remain closed until the parts of the doll are completely reassembled, at which time the doll's eyes open.

Abstract: The valve of U.S. Pat. No. 3,774,877 in which have valve operating pistons are mounted in a tubular sleeve received in a bore in a two part valve body, one part containing the connection for P1 and the other part containing the connection for P2 and the valve port.