Patents Examined by Wm. H. Punter
  • Patent number: 4158508
    Abstract: A system involving a pair of oppositely disposed sight glass units wherein each unit includes an inner glass and an outer glass. One application of these sight glasses is in continuous vulcanization of multiconductor cables in a saturated steam atmosphere. The cable is steam wiped prior to its travel through a chamber between the sight glass units to remove accumulated condensation therefrom. Since the inner surfaces of the glasses of each sight glass unit may be clouded or dirty, wiping means is provided for each wet-side surface to provide and maintain clear and unobstructed viewing to permit scanning of the cable as it passes through the chamber between the sight glass units, and means for sealing the glasses in the units.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: June 19, 1979
    Assignee: Jacoby-Tarbox Corporation
    Inventor: David R. Durant
  • Patent number: 4158507
    Abstract: A laser measuring system for industrial inspection having a laser producing a narrow beam of coherent light which is focused by telescope onto an article. The focused beam of light from the telescope is directed by a scanning means across the article at a known rate. The light reflected from the article is focused by an imaging lens offset from the scanning means onto an optical grating which is provided with alternate transparent and opaque bars. The collected light which passes through the transparent bars of the optical grating is sensed by a photomultiplier detector. A processor which sees the output of the photomultiplier detector determines the time interval between selected points of the output signal of the photomultiplier detector. As the scanning beam moves across the article it causes the laser spot observed by the photomultiplier to traverse the surface faster or slower depending on whether the scanning is proceeding up a portion of the surface of the article or down, respectively.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: June 19, 1979
    Assignee: Recognition Equipment Incorporated
    Inventor: David P. Himmel
  • Patent number: 4156570
    Abstract: An apparatus and method for measuring the linear extent and hence the concentration of several constituent blood cell types which are contained in the buffy coat of a centrifuged sample of anticoagulated blood.
    Type: Grant
    Filed: April 18, 1977
    Date of Patent: May 29, 1979
    Assignees: Robert A. Levine, James V. Massey, III
    Inventor: Stephen C. Wardlaw
  • Patent number: 4155650
    Abstract: A system comprising a detector for detecting a shift of a optical pattern formed on a semiconductor pellet at a distance from the datum point set on both sides of the pattern and giving a signal indicative of said shift, and a bonding device for wire-bonding said pellet with the shift compensated which has been shifted correspondingly to the shift of the pellet.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: May 22, 1979
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Itaru Yasue, Etsuji Suzuki
  • Patent number: 4154505
    Abstract: In an electro-optical light shutter device using a solid-solution ceramic material for alternate transmission and interception of light, a first voltage is applied to the solid-solution ceramic material in the operating (open) position of the shutter, and a second voltage of polarity opposite to that of the first voltage and having an absolute value smaller than that of the first voltage is applied to the solid-solution ceramic material in the non-operating (closed) position of the shutter. The solid-solution ceramic material has a composition in which a ferroelectric phase and a non-ferroelectric phase adjoin each other through a morphotropic phase boundary.
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: May 15, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Kato, Akio Kumada
  • Patent number: 4153367
    Abstract: Small reference marks near two corners of a circuit chip in the form of optical gratings in which the grating lines of both reference marks are parallel are illuminated alternately by a laser beam which is projected in the location the reference marks would have if the chip is properly located. Detectors are arranged to pick up the first secondary maximum of each diffraction pattern when the chip is properly located on its carrier plate. Failure of the detectors to respond indicates a chip that must be removed. With a beam-splitting arrangement producing four closely bunched light spots, straddling each of the reference marks, and an appropriate number of detectors, directional error signals are obtainable by which mechanical correction movements can be controlled for automatic localization of the chip.
    Type: Grant
    Filed: May 16, 1977
    Date of Patent: May 8, 1979
    Assignee: Robert Bosch GmbH
    Inventors: Christian Lietar, Pierre Jeannin
  • Patent number: 4153371
    Abstract: A mask alignment method of the reduction-projection type comprising the steps of illuminating only regions of alignment patterns formed on a mask and a wafer, before a circuit pattern formed on the mask is projected onto the chips of the wafer through a reduction-projection lens, and aligning the mask and the wafer with each other by detecting the reflected images of both the alignment patterns. The alignment pattern region is illuminated by the light having the same wavelength as the exposure light. In addition, a mask alignment apparatus of the reduction-projection type comprising an illumination device for illuminating the mask. The mask is disposed at a distance from the wafer. The illumination light includes g-line or h-line or a combination of g-line and h-line. The projection lens is interposed between the mask and the wafer so that the circuit pattern formed on the mask is projected on the chips of the wafer on a reduced scale thereby to give the optical printing of the circuit pattern to the wafer.
    Type: Grant
    Filed: February 23, 1977
    Date of Patent: May 8, 1979
    Assignee: Hitachi, Ltd.
    Inventors: Mituyoshi Koizumi, Nobuyuki Akiyama, Asahiro Kuni
  • Patent number: 4151752
    Abstract: The device comprises a lens and a source for emitting a beam of parallel light rays or ultrasonic rays at right angles to a flat dioptric element. The lens surface which is located opposite to the radiation-emitting source is flat and the lens surface located opposite to the dioptric element is such that the refracted rays are incident upon the dioptric element at a constant angle. The wave which is incident upon the dioptric element and corresponds to the beam refracted from the lens and the wave refracted from the dioptric element and corresponding to the incident wave are in phase along a predetermined path on the surface of the dioptric element.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: May 1, 1979
    Assignee: Commissariat a l'Energie Atomique
    Inventor: Jean Perdijon
  • Patent number: 4149776
    Abstract: A relatively compact, inexpensive and portable viewer for reading photogric reductions, such as microfiche film cards, includes a cylindrical translucent diffuser tube which provides for entry of sufficient light under usual ambient conditions for viewing the film; a transparent cylindrical mounting tube axially centered within the diffuser tube; and a slide tube axially and longitudinally movable, by hand operation, within the transparent mounting tube. The slide tube forms an optical path comprising a rectangular opening in its wall near one of its ends which acts as a film gate, a reflecting mirror positioned in line with the wall opening, a magnification lens and an eyepiece lens. The film is inserted in the cylindrical gap formed between the diffuser tube and the mounting tube and the slide tube is moved so that the desired portion of the film may be viewed, enlarged and read.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: April 17, 1979
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Seth L. Everett, Jr.
  • Patent number: 4148562
    Abstract: According to the invention, a helicoid mechanism is provided at each side of a supporting member of the lens barrel fixed by a tripod seat or the like, the front one being intended for effecting the displacement of the lens while the rear one being intended for displacing the camera, whereby a larger stroke of the lens displacement which is materially twice the conventional one is obtained with machining precision of conventional helicoid means.Means are provided for representing accurately the photo-taking distance, irrespective of whether either one of the front and rear helicoid mechanisms is solely adjusted, both of these helicoid mechanisms are individually adjusted or both of them are simultaneously operated, so as to render the operation of these helicoids free and to ensure an easier and more exact reading of the photo-taking distance.
    Type: Grant
    Filed: May 4, 1977
    Date of Patent: April 10, 1979
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventor: Hiroshi Sawano
  • Patent number: 4148586
    Abstract: An apparatus and method for utilizing the opto-galvanic effect to perform spectroscopic or analytic investigations of atomic or molecular species. A sample of the substance to be analyzed is vaporized in an analytical flame, gas discharge tube, high temperature furnace or the like, and the vapor is irradiated with chopped or pulsed variable wavelength monochromatic light. The electrical resistance of the vapor is monitored as the frequency of the radiation is tuned through one or more electronic transition frequencies of the substance. The resistance spectrum resembles the optical absorption spectrum of the species in the vapor. The opto-galvanic effect may also be used to frequency lock a laser to a transition frequency of a substance in a gas discharge cell.
    Type: Grant
    Filed: June 23, 1977
    Date of Patent: April 10, 1979
    Assignee: The United States of America as represented by the Secretary of Commerce
    Inventors: Robert B. Green, Richard A. Keller, Gabriel G. Luther, Peter C. Schenck, John C. Travis
  • Patent number: 4147411
    Abstract: A device to assist in threading needles includes a holder which is manually supported and which provides a support for a magnifying glass. A needle is detachably mounted in the holder with the eye exposed. The device includes means for varying the spacing between the magnifying glass and needle eye to locate the needle eye at the correct focal length of the magnifying glass for the particular user.
    Type: Grant
    Filed: December 13, 1977
    Date of Patent: April 3, 1979
    Inventor: Robert L. Barry
  • Patent number: 4147431
    Abstract: A partial pressure gauge utilizes an efficient electron collision excitation source yielding de-excitation radiation characteristic of residual gases. The intensity of a given spectral line is proportional to the partial pressure of the gas having such spectral line, and the current drawn from the excitation source provides a measure of the total pressure. A calibration technique based upon comparing the emitted light intensity with the ion currents associated with the excitation process yields an accurate measure of the relative partial pressure. Use of a filter to selectively pass radiation from a known constituent in known proportion in ambient gas provides an indication of the presence of a leak without the need for probing with a test gas. Provision for passing an evaporant stream through the excitation region permits accurate monitoring of the evaporant flux from which depostion rate is determined.
    Type: Grant
    Filed: January 25, 1978
    Date of Patent: April 3, 1979
    Assignee: Varian Associates, Inc.
    Inventor: Joseph K. Mann
  • Patent number: 4147433
    Abstract: A method and apparatus for inspecting the contour of an article is disclosed. Nondestructive viewing techniques including the projection of a light pattern onto the article to be inspected and the imaging of said light pattern to a display screen are discussed. The concepts taught enable the viewing of article regions which were formerly obstructed in conventional viewing systems.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: April 3, 1979
    Assignee: United Technologies Corporation
    Inventor: William H. Drinkuth
  • Patent number: 4145991
    Abstract: An arrangement for locating points on a surface, in which the surface is irradiated selectively and subdivided into a number of sections. The subdivided sections are made to overlap so that a region of one section overlaps the region of a neighboring section. Images of the irradiated sections are recorded, and then scanned for purposes of defining the location of predetermined points within overlapping regions of the subdivided sections. The location of the points within overlapping regions is dependent on a predetermined relationship of irradiated intensities of the points obtained during the scanning procedure.
    Type: Grant
    Filed: March 14, 1977
    Date of Patent: March 27, 1979
    Assignee: Solid Photography Inc.
    Inventors: Paul L. DiMatteo, Joseph A. Ross, Howard K. Stern
  • Patent number: 4145141
    Abstract: An optical instrument for locating the focal point of a smooth surface concave reflector of a signal lamp unit. The optical instrument includes a cylindrical metallic base member for insertion into the electrical socket of a light bulb. A translucent sighting target member is carried by the base member and includes a reticle for focusing in a distant image whereby the filament of a light bulb will be located at the focal point of the concave reflector for maximizing the illuminative efficiency of the signal lamp unit.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: March 20, 1979
    Assignee: Westinghouse Air Brake Company
    Inventor: Peter M. Noble
  • Patent number: 4142799
    Abstract: Apparatus for use in compensating for gun sighting errors due to misalignment between the muzzle axis of a gun and the optical axis of an associated gun sighting system is described, comprising a marker and a collimator mounted on the gun remotely from the muzzle and in fixed relation to one another, a reflector fixed to the muzzle portion of the gun barrel so as to be capable of reflecting into the collimator an uncollimated marker beam emanating from the marker, and means for defining an initial coincidence mark whose position is fixed in relation to the said optical axis so that after leaving the collimator the reflected marker beam can form a marker image superimposed upon the said initial coincidence mark, whereby any subsequent deviation of the muzzle axis from the said optical axis results in a corresponding movement of the marker image away from the initial coincidence mark.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: March 6, 1979
    Assignee: The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
    Inventor: Norman P. Barton
  • Patent number: 4140397
    Abstract: A collimated beam of light is directed onto a face of a microcircuit chip. If the configuration side of the chip is up and if the chip has a typical pattern predominantly comprised of two orthogonal sets of lines, the light reflected from the chip will be formed in a cross shaped diffraction pattern with most of the light concentrated in the center of the cross. If, however, the chip is upside down so that a plain face is exposed to the light, the light will be reflected fairly uniformly from the chip. By measuring the reflected light in a small center zone as well as in a larger zone and the light measurements are compared, it can be determined whether the diffraction pattern is present thereby revealing whether the chip is right side up, i.e. configuration side up.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: February 20, 1979
    Assignee: General Motors Corporation
    Inventor: Aaron D. Gara
  • Patent number: 4140393
    Abstract: This invention relates to the use of a birefringent crystal as the sensing element in a probe thermometer constructed of certain basic optical components utilized in three separate modes. Thus, all of the modes of the invention are directed to a probe thermometer which uses the temperature dependence of the birefringence of certain single crystals as the temperature sensitive parameter. One such crystal is a Y-cut single crystal of LiTaO.sub.3. Alternative crystals having adequate sensitivity in the desired temperature range may be constructed from LiNbO.sub.3 or BaTiO.sub.3. Polarized light propagates through the crystal in two modes, the ordinary ray and the extraordinary ray, which have indices of refraction n.sup.o and n.sup.e. For LiTaO.sub.3 at room temperature, n = 2.2, B = n.sup.e - n.sup.o = 0.004, and dB/dT = 4.4 .times. 10.sup.-5 /.degree. C.
    Type: Grant
    Filed: May 5, 1977
    Date of Patent: February 20, 1979
    Assignees: University of Arizona, The United States of American as represented by the U.S. Government
    Inventor: Thomas C. Cetas
  • Patent number: 4139268
    Abstract: Disclosed is a stop system for the focus of an optical instrument having a housing carrying an objective lens. The housing has an outer body tube slidably containing a coaxial inner tube forming the housing for an imaging device. A focusing nut is secured to the inner tube against axial movement and is screw threaded to the outer tube whereupon rotation of the nut causes relative axial movement between the inner and outer tubes to focus the imaging device and objective lens relative to one another. The focusing nut has a reduced diameter short tube supporting a plurality of cascade rings. A support ring is carried by the inner tube adjacent the end of the support tube. The focusing and cascade rings carry axially projecting lugs at predetermined circumferential positions thereabout while the cascade and stop rings carry shoulders at predetermined circumferential positions thereabout.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: February 13, 1979
    Assignee: Smith & Wesson Chemical Company, Inc.
    Inventor: Alan Litman