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| Number | Title | Issue Date |
| 4171744 | Document classifier This invention relates to the classification of a stream of documents, such as mixed mail pieces, into size and orientation of categories for subsequent processing. The apparatus includes a laser beam which scans a conveying belt upon which the documents ... | 10/23/1979 |
| 4165939 | Apparatus for inspection and dimensional measurement by sequential reading An inspection system is disclosed for detecting dimensional tolerances, shape and cosmetic defects in containers. A conveyer carries the containers past an inspection point where at least one focused beam of radiant energy traverses the container's surfac... | 08/28/1979 |
| 4120403 | Photoelectric apparatus for sorting variegated articles according to size A photoelectric apparatus for sorting articles according to size includes a vertical column of photoelectric pickups disposed adjacent to the conveyor on which the articles pass by. The apparatus includes a clock pulse generator synchronized with the conv... | 10/17/1978 |
| 4115702 | Device for measuring at least one dimension of an object and a method of operating said device A device for measuring at least one dimension of an object comprises two light channels of which one is intended to receive the object and the other serves as a reference channel. Light from the two channels is conducted to respective photo-electric trans... | 09/19/1978 |
| 4112309 | Apparatus for measuring the line width of a pattern An apparatus for photoelectrically detecting the position of each of the edges of a line having the opposite edges thereof formed substantially parallel to each other on an a substrate thereby to measure the width of the line, comprises a source of cohere... | 09/05/1978 |
| 4101612 | Optical method and apparatus for determining stress relaxation The dimension across an extrudable material is monitored during an extrusion period and during a stationary period.... | 07/18/1978 |
| 4097158 | Half-maximum threshold circuit for optical micrometer An optical micrometer includes circuit means for determining accurately the passage of a scanning beam of light across the edges of an article placed within the zone of measurement. By sensing the half power point of the beam as received by a photodetecto... | 06/27/1978 |
| 4080172 | Zone refiner automatic control Disclosed is a method and apparatus for the automated growing of a floating zone refined, monocrystalline semiconductor rod. Two images of the molten/solid interface are separately positioned on two sensor arrays which, in addition to providing positionin... | 03/21/1978 |
| 4074938 | Optical dimension measuring device employing an elongated focused beam In an optical dimension gauging instrument, commonly referred to as a laser micrometer, particularly for use in measuring the outside dimension of elongated cylindrical objects, such as coated wires or steel tubes, in hostile optical environments, includi... | 02/21/1978 |
| 4067652 | Method and means for the determination of a planar dimension In measuring the width of rolled stock, a photo-sensitive diode array overlying an edge of the stock is scanned to provide an indication of the position of the edge of the stock, the outputs of the diodes appearing serially to provide a waveform. To find ... | 01/10/1978 |
| 4063820 | Apparatus for measuring a dimension of an object A beam of light angularly directed relative to a surface of an object having a dimension to be measured is intercepted by the object, which is moving at a known speed. By knowing the beam angle, the object speed, and the time lapse between the passage of ... | 12/20/1977 |
| 4061427 | Laser extensometer A drift compensated and intensity averaged extensometer for measuring the diameter or other properties of a substantially cylindrical sample based upon the shadow of the sample. A beam of laser light is shaped to provide a beam with a uniform intensity al... | 12/06/1977 |
| 4043673 | Reticle calibrated diameter gauge A non-contact optical gauging device in which a laser beam is deflected to produce a bidirectional scan. The beam is split; a measuring portion scans an object being inspected while the other portion scans a calibration reticle having alternating opaque a... | 08/23/1977 |
| 4037968 | Method and apparatus for measuring a dimension of an object in a defined space by scanning with a light beam A method of measuring width of an object between two of its edges is disclosed wherein the object is placed between the edges of an aperture and a narrow beam of parallel light is directed through a rotating prism so as to scan the aperture and object the... | 07/26/1977 |
| 4037103 | Diameter measuring system for cylindrical objects A system for the rapid and accurate measurement of the diameter of cylindrical objects and the like, such as nuclear reactor fuel pellets. The system essentially operates on the principle that when an infrared emitter and receiver are aligned in diametric... | 07/19/1977 |
| 4033697 | Automatic exposure control for a luminous object monitor system A system for measuring a dimension, such as the width, of a hot strip of material on line, particularly steel and glass. The system utilizes two arrays of light sensitive electronically scanned detectors, placed above the hot strip and spaced apart at a d... | 07/05/1977 |
| 4025796 | Photoelectric instrument for measuring the length of an object A photoelectronic instrument for measuring the length of an object by means of a slim scanning beam of light which, when not interrupted by the object, activates a photoelectric transducer, wherein, for the purpose of determining trigger points when half ... | 05/24/1977 |
| 4021832 | Photocell control device for a photographic film processor A method and a processor having infrared sensed chemical replenishing system for processing photosensitive material. The processor includes a replenishing circuitry having a power supply; a pulsed infrared sensor electrically connected to the power supply... | 05/03/1977 |
| 4007992 | Light beam shape control in optical measuring apparatus A narrow collimated light beam, such as a laser beam, is directed towards a mirror which is rotated to effect rotary planar scanning or sweeping of a lens constructed to convert the rotary scanning beam into a parallel scanning beam. An article to be meas... | 02/15/1977 |
| 3992107 | Automatic flat width control The width of a continuously moving flat material, such as a web, or a film sheet, or a flattened tubular plastic film, in manufacture or in process, is continuously monitored by non contacting sensor means which scan the material by oscillating transverse... | 11/16/1976 |
| 3986037 | Yarn detector with a self-calibrating circuit In a yarn inspection system for detecting variations in yarn diameter wherein a plurality of yarns move past a plurality of transducers for generating electrical signal outputs corresponding to yarn diameter and including discriminator circuitry sequentia... | 10/12/1976 |
| 3970847 | Dimension measuring apparatus The present invention provides a measuring apparatus comprising at least four photocells adapted to be simultaneously, synchronously displaced in a common plane on respective linear paths for scanning a projected image of a zone to be measured, said paths... | 07/20/1976 |
| 3955095 | Method and apparatus for determining the average size of apertures in an apertured member The average aperture width in a small area of an apertured member, such as a shadow mask for a cathode ray tube, is determined by passing a beam of substantially monochromatic light through an area of the member to form an interference pattern, detecting ... | 05/04/1976 |
| 3954337 | Method and apparatus for determining the average size of apertures in an apertured member The average aperture width in a small area of an apertured member, such as a shadow mask for a cathode-ray tube, is determined by passing a beam of substantially monochromatic light through an area of the member to form an interference pattern, detecting ... | 05/04/1976 |
| 3947130 | Metrological TV microscope Apparatus for measuring a dimension of a specimen whose image is projected by an optical system into a television camera or other light scanner, by forming the ratio of the time required to scan across the unknown dimension, with the time required to scan... | 03/30/1976 |
| 3941484 | Non-contact dimensional measurement technique A high-speed technique for making accurate dimensional measurements of objects without physically touching the objects. The technique involves generating a low-divergence, collimated light beam which acts to silhouette the object to be measured to produce... | 03/02/1976 |
