Abstract: A method in electroencephalography (EEG) for the display of neurometric test data in which electrical activity generated by the brain either spontaneously or in response to specified challenges or conditions is detected at specified locations on the head surface of the subject by a plurality of electrodes. Features extracted from the spontaneous or evoked brain waves are quantified according to specified neurometric indices and categorized, using the mean values and standard deviations of control groups, according to their relative probability in a population of normal healthy people. Multivariate methods such as multiple analysis of variance or stepwise discriminate analysis can be used to identify independent features particularly useful for diagnosis. The values of such features can be used to construct a multivariate vector for each individual patient.

Abstract: A valve element for a small sized air pump. The valve element has legs, each of which are tightly secured within holes of valve-beds of a valve casing. A longitudinal hole is formed within each of the legs. The hole of the leg is opened at one end and closed at the other such that the hole terminates at a level horizontal to the lower surface of the valve-beds when the valve element is assembled.

Abstract: Eye and head movements produce large voltages which obscure the electrical activity of the brain, interfering with diagnostic procedures. In the system and method of the present invention electrical response to such movement artifact is detected by a set of electrodes and transmitted to amplifiers, analog-to-digital converters and an on-line to a digital computer. The computer monitors each of the 19 channels corresponding to the 19 electrodes on the subject's head and a pair of electrodes located diagonally above and below one eye (trans-orbital) to detect artifacts associated with eye movement. Each channel of brain waves and artifact signals, converted into digital information, are compared with a threshold selected digital value set by the operator either by using standard values, by empirically eliciting sample artifacts, or by a standard deviation determination. The computer, after determining that there exists a movement artifact, i.e.

Abstract: An optical system for cameras and projectors includes a reflective convex mirror for a wide-angle view, for example, a sector of one fourth of a sphere to obtain a view of 180.degree.. The optical system further includes a front face reflecting mirror to change the optical path 90.degree., a first focusing lens, a fiber optic bundle and a second focusing lens. The fiber optic bundle has one face in the form of an annulus or sector of an annulus and the opposite face of rectangular shape so that an annular shaped image may be converted into a non-distorted image of rectangular form.

Abstract: A photographic film projection system includes a plurality of projectors, one of which is an arc lamp projector, and a dissolver instrument whose controlled output power to the arc lamp projector is a phase controlled average a.c. power. The arc lamp projector has a light valve comprising a motor means linearly responsive to average power, for example, a moving iron galvanometer, and a movable means, such as a louvre, positioned between the arc lamp and the film gate.

Abstract: Two-dimensional figures which are to be represented in three-dimensional images consist of a series of lines or line segments which may be in the form of hand drawings, two-dimensional printed pictures, filament pictures, photographs, projected pictures, computer displays, cathode ray displays, or LED displays, and may be produced on transparent or opaque backings or, in the case of filament pictures, suspended in a suitable frame. A viewing grating is held a distance above the plane of the figure, causing a three-dimensional image to be represented in a plane other than that of the figure.

Abstract: A fabric substrate is passed through an electric field in order to set up a charge on the surface of the substrate and to thereby cause a particulate adhesive material stored in a container over which the substrate passes to be attracted to the surface of the substrate by electrostatic attraction. The coated substrate is subsequently heated to melt the adhesive material so that it agglomerates and adheres permanently to the substrate, thus forming a fusible interlining.

Abstract: A releasable locking fastener for industrial applications comprises a turn member actuator which may be attached to one panel and a receptacle member which may be attached to another panel. The turn member actuator includes a turn member, a retention means and a flat spring for resiliently disposing the turn member. The turn member is stamped as a unitary member from sheet metal and comprises a turning head means, an upper shank portion having a retention means seat, a middle shank portion having indentations, and a lower shank portion preferably having one or two cammed shoulders and terminating in a rounded nose. The receptacle member includes a base having an elongated opening, an indentation in the base transverse to the opening, and a plurality of stops protruding from the base.

Abstract: An improved valve mechanism for a small sized air pump, having valve elements each of which is secured in a housing of a valve casing. The valve element has a semi-circular portion and a tongue. The semi-circular portion is trapezoidal and snuggly and firmly positioned within the housing.

Abstract: An improved welding apparatus for dental purposes which allows a welding operation while materials to be welded are supported in position by hands. In the apparatus, an welding current is applied to electrodes of the apparatus by merely pushing a plate while keeping the materials to be welded in position between the electrodes.

Abstract: A system for the projection of the magnified image of the liquid contents on the wall of a test tube includes a light-tight cabinet, a light source, a test tube holding means which preferably positions the test tube at an angle of 10.degree.-40.degree. from the horizontal, a projection lens and a rear viewing screen.

Abstract: A programmed controller for controlling the start of a heating system includes a clock mechanism to produce a time-variable signal, two temperature transducers, one inside and one outside of the building, and an electronic circuit which is a proportional summing means to combine (in predetermined proportions) the electrical outputs of the two transducers, and an electronic circuit to combine the time variable signal with the summed transducer output signals to thereby produce a control signal for controlling a heating appliance, such as a boiler.

Abstract: A process for regenerating waste acid, such as waste hydrochloric acid pickling liquor by producing aqueous hydrochloric acid of pickling concentration and generating iron oxide including that of pigment grade, comprises the steps of (1) concentrating the waste liquor, (2) reacting the concentrated liquor at a temperature below 1000.degree. F.

Abstract: A security device for an electronic calculator consists of an electronic circuit within the calculator which permits operation of the calculator only after the operator has correctly operated a predetermined sequence of keys. The circuit is connected to the sense and the digit drive lines of an electronic calculator having an electronically scanned keyboard. The circuit includes a key selection matrix, a valid actuation discriminator logic, an actuation sequence counter, an alarm inhibiter and an alarm which disables the proper functioning of the calculator.

Abstract: A locking industrial fastener comprises a hook-like keeper plate member having a keeper lip to be attached to one panel and a turn hasp member attached to another panel. The turn member comprises a sleeve member hinged to a fastening plate, a slide member which telescopically slides in the sleeve member, a cam pin operable in a cam opening in the sleeve member, a first disk rotatable in a circular opening in the sleeve member, a second disk fixed to the first disk, a spring disk fixed to the other disks, and a turning means.

Abstract: An improved hand stamp for numbering, dating, etc. is provided. The stamp has printing belts, a shaft and a plurality of polygonal members. The shaft has a protrusion along the entire length, and the polygonal members have a through-hole and a plurality of grooves on the circumferential surface of the through-hole such that the position of the polygonal members may be fixed by an engagement between the protrusion and the grooves. The printing belts are rotated by a rotation of the polygonal members about the shaft against the engagement between the protrusion and the grooves.

Abstract: A system for regenerating waste acid, comprises (1) a concentrator for concentrating the waste liquor, (2) a reactor for reacting the concentrated liquor at a temperature below 1000.degree. F. in the presence of oxygen and hydrocarbon combustion gases and on a recycled moving bed of particles without vibration of the reactor bottom, (3) a separator for separating the iron oxide dust from the other gases from the reactor, (4) the same concentrator cools these gases, (5) an absorber for absorbing the hydrogen chloride cooled gas in an aqueous solution from the following scrubber, (6) a scrubber for scrubbing the unabsorbed gases in water to absorb the hydrogen chloride gas remaining in the gases from the absorber, and (7) a condenser for condensing any liquids and any residual HCl remaining in the exhaust gases before exhausting them as non-polluting gases into the atmosphere and passing the condensate back into the waste acid concentrator.

Abstract: A laboratory mixing apparatus for the testing of blood or other liquids includes a prescored capillary pipette to accurately measure the fluid, a centrifuge and a pipette breaking device. The pipette is secured to a squeeze bulb which ejects the fluid, after being centrifuged, into the top cell of a multi-celled container. The container is positioned in the mixing apparatus and automatically, in selected timed sequence, if needed, warmed and agitated and the membrane between cells is automatically ruptured.

Abstract: In a blow molding machine a tubular parison is extruded around a blow pin, a two-part mold is closed and the parison is expanded by air pressure against the internal wall of the mold. Each mold half at its top neck carries a sealing member comprising a first insert, which is a shear insert, in the form of an approximately flat one-half ring to sever the parison against the blow pin; a second insert, which is a seal insert, in the form of a flat approximately one-half ring, to seal the parison against the blow pin; and a base member, in the form of an approximately one-half ring, having an inverted shelf to locate and support the shear and seal inserts.