Abstract: A speed of movement of a moving object, e.g., a tennis ball, which moves a predetermined distance is determined by measuring a time interval between a first detection of a vibration wave produced in the ball when it is hit by the tennis player's racket and a second detection of anouther vibration wave produced when the ball collides with the court surface. A vibration sensor for performing the first detection, and a microcomputer for computing the movement speed of the ball, and a liquid crystal display for displaying the movement speed are accommodated in a case which is mounted on the tennis racket. A sound collecting micrphone which performs the second detection is attached to the lower edge of the net near a ball landing position on the court, and the detection signal is transmitted over a radiowave to a receiver accommodated in the case.

Abstract: A pull string mechanism for a pull string type sound reproducing device utilizes a string supporting member which is resiliently movable only in an upward and downward direction. The string supporting member is disposed adjacent a pull out hole, such that the path of the pull string from the pull out hole, via the string supporting means and a bobbin for taking up and paying off the pull-string can follow a crank shaped path with the angle of turning being not larger than a right angle.

Abstract: A support strand is formed of a non-extensible thread wound around an elastic thread in order to restrain the extension of the non-extensible thread within such a limit that the coil of the wound, non-extensible thread can follow movement of the elastic thread. A signal transmitting strand is further wound around the outer surface of the support strand to form the composite strand.

Abstract: Disclosed is an internal prosthesis for use with a prosthesis attachable externally to a residual limb having a bone with a free end thereof. The internal prosthesis comprises bone end pressure distributing means disposed completely within the residual limb and open-bottomed bone end containing means attached to the bone end pressure distributing means. In separate embodiments, the bone end pressure distributing means comprises a tubular, mesh sock/sleeve with a central aperture. The open-bottomed end containing means comprises a mesh bone sock/sleeve which surrounds the central aperture and extends up the bone disposed around the aperture and also provided with a reinforced portion. Alternatively, the bone end pressure distributing means comprises a radially extending plate with an central aperture around which is disposed an upwardly extending boss. The bone end containing means comprises an open-ended bone cap which is formed of two sections.

Abstract: A tankwasher which may be mounted permanently in a tank that requires frequent cleaning comprises a tube 1 connected to a source of cleaning liquid supply, a shaft 5 non-rotatably mounted in the outlet end of the tube 1 and having an enlarged head at the end thereof which protrudes from the tube 1, a liquid guide 3 surrounding said shaft 5 internally of the tube 1 and formed with helical grooves on its external surface, and a shaped liquid distribution disc 4 rotatably mounted around the shaft 5 between the head of the shaft 5 and the neighboring end of the liquid guide 3. An R-shaped resilient clip 2 constitutes the only connection of the shaft 5 to the tube 1 and, upon its removal, the shaft 5, the liquid guide 3 and the disc 4 can all be freely removed from the tube 1 and from each other for cleaning or other purposes.

Abstract: A turbo-compressor air supply system for supplying air at relatively low pressure and high volume to a paint spray system or the like. The air supply system comprises a drive motor including a casing, a drive shaft projecting from the casing and air intake means in fluid communication with the casing. A turbo-compressor is provided which includes a housing, a drive shaft having first and second projecting ends, a bearing housing projecting from the compressor housing and disposed concentrically around and spaced from a projecting end of the drive shaft and a bearing disposed concentrically around the projecting end. A drive train couples the compressor drive shaft with the other projecting end of the drive motor drive shaft to enable the motor to drive the turbo-compressor. Means are provided for placing the bearing housing in fluid communication with a drive motor casing and associated air intake means to provide cooling for the bearing.

Abstract: A highly flame retardant and substantially non-combustible polyisocyanurate foam having low friability and no bursting characteristics and method for preparing the same. The method includes the step of reacting an isocyanate having an average isocyanate equivalent weight between about 135 and 145 with a polyether polyol having a hydroxyl number between about 300 and about 600 and a hydroxyl functionality of at least 3. The compounds are combined in amounts to provide NCO/OH equivalent ratio between about 10 and about 50 and are reacted in the presence of a chlorofluorocarbon blowing agent and a catalyst having the general formula: ##STR1## wherein R is a hydrocarbon having between about 1 and about 2 carbon atoms, R' is an alcohol radical having between about 2 and about 3 carbon atoms, and R" is selected from the group consisting of hydrogen and an alkane group having between 1 and 8 carbon atoms.

Abstract: Low-foaming antimicrobial concentrate and "use" composition comprising (a) an antimicrobial agent selected from the group consisting of monocarboxylic acids, dicarboxylic acids and mixtures thereof, (b) an alkyl N,N-dimethyl amine oxide solubilizer-coupling agent having between about 8 and about 10 carbon atoms in the alkyl portion, (c) an acid capable of yielding a pH less than or equal to about 5.0 upon dilution of the concentrate to a use solution, and (d) water. This composition provides effective storage stability and low-foaming sanitization when used in "in-place" processing lines such as dairies, breweries and other food processing facilities.

Abstract: An electrical generator drive which comprises a power source able to transmit power at a rotational speed which may fluctuate substantially in service, an electrical generator which requires a rotational input of power at a substantially constant speed, and a controllable drive transmission of high rotational inertia coupling together the power source and the electrical generator. The drive transmission comprises an epicyclic gear having an input member driven by the power source, an output member coupled with the electrical generator, and a reaction member, a monitoring device responsive to fluctuations from a predetermined value in the rotational speed of the output member, and a control device including a hydraulic pump/motor unit coupled with the reaction member and controllable by the monitoring device in order to vary the relative rotation between the reaction member and the other members of the epicyclic gear so as to maintain a substantially constant predetermined speed of the output member.

Abstract: An outer garment to be worn by two persons together, consisting of a vest, two sleeves and two inner arm support compartments. The garment can be a closed vest having a means of access for the head at the top, or having a front opening extending from top to bottom, having a first section and a second section with a means of closure. The inner arm support compartments afford the wearers comfort and wearing versatility, while allowing the two wearers to maintin close physical contact.

Abstract: A device for sterile disposal of a device used to withdraw or inject fluids from or into the body comprising a tubular sheath disposed in a rolled-up fashion around the body fluid device proximate one end thereof. The length of the sheath is great enough to permit the sheath, when unrolled, to extend beyond the end of the body fluid device and for a sufficient distance to permit ready enclosure thereof and subsequent sealing off of the contents of the sheath. A method for using the device is also disclosed. The device is particularly useful in combination with a catheter of conventional design.

Abstract: A water soluble lubricant concentrate adapted to be admixed with water and a lubricant composition made therefrom which exhibit enhanced levels of lubricity and hard water stability and facilitate the transportation of containers on a conveyor. The concentrate and composition include:(a) an anionic surfactant selected from the group consisting of alpha olefin sulfonates, sulfonates of ethoxylated alcohols, alkyl aryl sulfonates, napthalene sulfonates and mixtures thereof;(b) a carrier for the anionic surfactant; and(c) a water soluble salt of aluminum selected from the group consisting of aluminum sulfate, aluminum nitrate, aluminum chloride, polyhydrates of potassium aluminum sulfate/aluminum sulfate complexes and mixtures thereof.

Abstract: A method of converting particles liberated in chemical or physical processes, such as fly ash, metal processing sludge particles obtained in the preparation of metals or metal compound, or particles of electroplating sludge, are made harmless by preheating these particles to at least 600.degree. C. and then mixing same with a molten slag material, whereafter the mixture is solidified and broken.Preferably, the particles are preheating to their softening point or are molten.Noxious products, such as metals, being present in said particles cannot be leached out from the broken solidifed composition.

Abstract: A marker device suitable for attachment to a video cassette or the like is disclosed, which marker device comprises an elongate laminar device having first and second faces on opposite sides of the device, the first face of which is adapted to be secured to a surface of, for example, a video cassette; and the second face of which includes a window through which indicia marked upon the device may be viewed; and, between said first and second faces, an arrangement of the type in which a first foil layer can be releasably attached to a second layer, points of attachment therebetween being visually distinctive and constituting said indicia; and means for separating said first and second layers so as to release said points of attachment and thereby erase said indicia.

Abstract: A synthetic plastics or other flexible but substantially inextensible tiling matrix 1 is provided defining an apertured portion 2 formed with openings 3, half-sized openings 5, and quarter-sized openings 4, one surface of the matrix portion 2 being provided with cruciform and rectilinear projections 9 between which tiles can be installed. The matrix 1 is secured to a wall or other surface that is to be tiled by use of an adhesive and the tiles are secured to that wall or other surface and to the matrix portion 2 by a conventional tiling adhesive following which grouting is installed between the regularly spaced apart tiles in a conventional manner. The projections 9 have a projecting extent that is less than the thickness of the tiles so that they will be concealed after grouting has been completed. Edges of each matrix portion 2 are provided with interlocking projections 6 and recesses 7 so that one matrix portion 2 can quickly and accurately be positioned in line relative to others.

Abstract: An apparatus for the preparation of a fixed bridge which includes a wax occlusal bar adapted to be positioned within a gap located between two abutments in a model of the patient's mouth and at least one removable wax pontic adapted to be carried on the occlusal bar. The wax pontic is movable and rotatable relative to the bar. The method of preparing a wax bridge employing this apparatus includes the following steps:(a) preparing a model of the patient's mouth;(b) inserting an occlusal bar into a gap between the two teeth;(c) temporarily affixing the bar in the gap;(d) movably positioning at least one pontic on the occlusal bar;(e) affixing the positioned pontic to the occlusal bar; and(f) removing the occlusal bar with the pontic affixed thereto from the model. The prepared wax bridge can then be used to cast a suitable fixed bridge.

Abstract: A six stage rolling machine for forming endless metal belts from tubular workpieces comprises, a first roll disposed within the workpiece, a second roll disposed outside the workpiece and constitutes, in cooperation with the first roll, a pair of work rolls for effecting one position rolling of the tube into a belt. The first roll is provided with a pair of back-up drive rolls capable of being contacted with the first roll under pressure to play a role as backing up and driving rolls, similarly, the second roll is also provided with a pair of rolls capable of being contacted with the second roll under pressure to play a roll as backing up and driving rolls, that is, the rolling machine comprises a pair of work rolls and four back-up rolls, that is, six rolls in total.

Abstract: A method for producing a solid alkaline detergent in which an effective amount of a hardness sequestering agent is mixed in an aqueous solution containing less than about 51 percent of an alkali metal hydroxide or an alkali metal silicate at a temperature between about 55.degree. F. and about 130.degree. F. to form a liquid dispersion. A solid caustic material is then added to the liquid dispersion in sufficient quantity to cause the eventual solidification of the dispersion. The dispensed is then mixed until homogeneous and can then be dispersion into a suitable receptacle and permitted to solidfy.

Abstract: A paint spray gun is provided with a means of adjustably controlling fanning of the spray which may be regulated independently of the rotative position of the air cap. A valve member axially shiftable by an adjustment screw adjustably controls the flow of air to fanning control ports in the air cap without interfering with the flow of atomizing air to the paint spray nozzle.