Patents Assigned to North American Philips Corporation
  • X-Ray apparatus and closure mechanism therefor
    Patent number: 4379481
    Abstract: An apparatus for inspecting various articles in connection with the present invention comprises a structure for operating a retractable door which includes a shaft member, a flexible door member carried by and windable on the shaft member, a motor structure for driving the shaft member, and a gear train mechanically linking the motor and shaft member. The gear train includes a drive gear and a driven gear with the driven gear being connected to the shaft member and the drive gear being connected to and driven by the motor. The drive gear and driven gear both comprise gear teeth about only a portion of the respective circumferences. A switch member for controlling the motor is provided, and an actuating control structure is provided with respect to the drive gear for controlling the switch member.
    Type: Grant
    Filed: November 10, 1980
    Date of Patent: April 12, 1983
    Assignee: North American Philips Corporation
    Inventors: Adolph Juner, David J. Haas, Chester D. Rudd
  • Magnetic bearing
    Patent number: 4379598
    Abstract: A bearing has an inner ring of magnetic material having an annular recess in its outer periphery for receiving a first annular permanent magnet ring, and an outer ring having an annular recess in its inner surface for receiving a second permanent magnet ring. The magnet rings are spaced to provide a gap therebetween. The permanent magnet rings are poled in the radial direction, with like poles facing one another. The magnet rings may have inclined surfaces, with greater diameters at one end than at the other, for axial loading, or they may extend straight in the axial direction. The magnet rings may be built up of segment shaped pieces, which may be stacked also in the radial direction.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: April 12, 1983
    Assignee: North American Philips Corporation
    Inventor: Michael P. Goldowsky
  • Recording structure for direct read after write recording
    Patent number: 4379299
    Abstract: An information recording medium uses a semiconductor film on a plastic substrate for obtaining a direct read after write digital recording with laser recording and writing devices. The writing laser produces an area of generated heat in the semiconductor film which produces a heated region in the underlying plastic substrate. The heated plastic substrate material decomposes or degases yielding gaseous components with a high pressure that will burst the overlying semiconductor layer leaving a pit or hole in the reflective surface.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: April 5, 1983
    Assignee: North American Philips Corporation
    Inventors: Brian J. Fitzpatrick, Rameshwar N. Bhargava, Alfred E. Milch, Pedro Tasaico
  • Intergranular insulation type semiconductive ceramic and method of producing same
    Patent number: 4367265
    Abstract: An intergranular insulation type semiconductive ceramic having a high effective dielectric constant includes an electrically insulating dielectric layer situated in the grain boundaries of an alkaline-earth metal titanate, zirconate, or combination thereof. The alkaline-earth metals are barium, strontium, and calcium. The dielectric layer is made of a mixture of bismuth oxide (Bi.sub.2 O.sub.3) and one or more metal oxides from nickel oxide (NiO), alumina (Al.sub.2 O.sub.3), and cuprous oxide (Cu.sub.2 O).
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: January 4, 1983
    Assignee: North American Philips Corporation
    Inventors: Chyang J. Yu, Hem P. Takiar
  • Vented membrane switch with contaminant scavenger
    Patent number: 4365130
    Abstract: A membrane switch, which is vented to equalize air pressures within and outside the switch, includes a scavenger material in the vent passage selected to react with airborne contaminants and prevent or substantially reduce their passage into the area of the switch contacts.
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: December 21, 1982
    Assignee: North American Philips Corporation
    Inventor: David A. Christensen
  • Electrophoretic elapsed time indicator
    Patent number: 4364670
    Abstract: An elapsed time indicator is constructed to operate by electrophoresis wherein light colored particles suspended in an organic liquid are caused to move in a tube device by applied electric fields. The movement of the colored particles results in a visible color bar being indicative of the transit time of the particle, and providing an indication of elapsed time. Reversal of the polarity on the device results in its reuse.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: December 21, 1982
    Assignee: North American Philips Corporation
    Inventor: Roger P. White
  • Low temperature regenerators for cryogenic coolers
    Patent number: 4359872
    Abstract: A regenerator for a closed thermodynamic cycle cryogenic cooler is made of a vessel containing helium. The helium may be contained in, for example, hollow glass spheres or hollow metal tubing. The pressure of the helium in the vessel and the size of the regenerator are chosen to assure that the mass of helium in the regenerator exceeds the mass of helium in the working gas which passes through the regenerator in the operation of the cooler. Closed thermodynamic cycles in which the helium-containing regenerators can be used include the Stirling cycle and the Vuilleumier cycle.
    Type: Grant
    Filed: September 15, 1981
    Date of Patent: November 23, 1982
    Assignee: North American Philips Corporation
    Inventor: Michael P. Goldowsky
  • Light emitting diode assembly
    Patent number: 4358708
    Abstract: A lamp assembly includes a lamp and a lamp package. The lamp includes a light-emitting portion with a flange at its base and electrically conducting leads extending from the base. The flange has a flat portion. The lamp package includes a cylindrical housing and a cylindrical cover. The housing has a base and a side wall, the base having holes for the electrical leads to pass therethrough, the bore in the housing being ssmaller than the flange of the lamp. A portion of the side wall of the housing has a flat key for engaging the flat portion of the flange. The cover has a side wall and an inwardly extending flange such that when the cover is slid over the lamp and the housing, the inwardly extending flange engages the outwardly extending flange of the lamp thereby holding it in place against the top of the housing and against the flat key of the housing.
    Type: Grant
    Filed: April 15, 1980
    Date of Patent: November 9, 1982
    Assignee: North American Philips Corporation
    Inventors: Joseph A. Silva, Paul Manchenko
  • Apparatus for inspecting hand-held articles and persons carrying same
    Patent number: 4357535
    Abstract: An inspection system is provided to simultaneously X-ray inspect hand carried articles and provide metal detection of the person of the carrier. These different inspections are independent, and may be carried out separately from one another. The X-ray inspection involves the insertion of a hand carried item into a chamber, and guiding it along the X-ray inspection station by holding a handle outside of the detector. Metal detection of the person may be accomplished independently by walking through a metal detector arch.
    Type: Grant
    Filed: April 30, 1980
    Date of Patent: November 2, 1982
    Assignee: North American Philips Corporation
    Inventor: David J. Haas
  • Laser trimmable resistor coating
    Patent number: 4350784
    Abstract: An abrasive resistant coating is provided for laser trimmable film resistor devices by use of heat-hardenable compositions containing a prepolymer of diallyl isophthalate or diallyl phthalate, an ether alcohol solvent, a heat-curing catalyst and an inert inorganic filler.
    Type: Grant
    Filed: May 5, 1981
    Date of Patent: September 21, 1982
    Assignee: North American Philips Corporation
    Inventor: Karl F. Baum
  • Method of manufacturing a pyroelectric vidicon target, apparatus for practicing the method, and a pyroelectric target manufactured by the method
    Patent number: 4349410
    Abstract: A method of manufacturing a target from a pyroelectric material exhibiting ferroelectric domains includes the steps of poling the target in a uniform direction and then etching a central region of the target to produce a thin target with a thick support rim around an outer edge. An apparatus for poling wafers of pyroelectric material includes two electrodes spaced a fixed distance apart by an electrode separator. The pyroelectric material is mounted in the separator at a fixed position between the electrodes. An electrically insulating liquid dielectric fills the spaces between the electrodes and the pyroelectric material in order to maximize the electric field across the material. A pyroelectric target produced by poling prior to etching exhibits reduced surface anomolies and improved image quality.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: September 14, 1982
    Assignee: North American Philips Corporation
    Inventors: Edward H. Stupp, Joseph Lalak
  • Acoustic impedance matching device
    Patent number: 4348904
    Abstract: An acoustic impedance matching structure, intended primarily for use with ultrasound transducers in medical imaging applications comprises an elastomer mesh embedded in metal-loaded plastic resin.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: September 14, 1982
    Assignee: North American Philips Corporation
    Inventor: Peter Bautista, Jr.
  • Method of providing a universal coating for fluorescent lamps
    Patent number: 4340512
    Abstract: A method of preparing phosphor suspensions for coating fluorescent lamps wherein the temporary organic binder is an association compound of purified carboxy methyl cellulose and polyethylene oxide in such proportions as to avoid the gelation caused by ionizable phosphors releasing multivalent cations.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: July 20, 1982
    Assignee: North American Philips Corporation
    Inventor: Willy P. Schreurs
  • Temperature sensor
    Patent number: 4332081
    Abstract: A temperature sensor is constructed as a bridge circuit using thick film technology. Both thermistor and resistor thick film inks are applied to a substrate to form a bridge circuit for producing a highly sensitive and accurate indicator when a predetermined temperature has been reached. The resistor thick film circuit is laser scribed at a specific temperature value for greater accuracy.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: June 1, 1982
    Assignee: North American Philips Corporation
    Inventor: Gaylord L. Francis
  • Acoustic impedance matching device
    Patent number: 4326418
    Abstract: A impedance matching window for an ultrasound transducer comprises a periodic array of stepped structures. Each stepped structure comprises a plurality of parallel matching strips disposed side-by-side on an active surface of a piezoelectric ceramic.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: April 27, 1982
    Assignee: North American Philips Corporation
    Inventor: James W. Pell, Jr.
  • Diffracted beam monochromator
    Patent number: 4322618
    Abstract: Disclosed is an x-ray monochromator assembly comprising a receiving slit, a collimator and a monochromator crystal. The collimator is mounted so as to be selectively removable from the x-ray beam.
    Type: Grant
    Filed: December 18, 1980
    Date of Patent: March 30, 1982
    Assignee: North American Philips Corporation
    Inventor: Ronald Jenkins
  • Room air cleaner
    Patent number: D266585
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: October 19, 1982
    Assignee: North American Philips Corporation
    Inventors: William J. Rakocy, Ronald L. Muller
  • Room air cleaner
    Patent number: D266586
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: October 19, 1982
    Assignee: North American Philips Corporation
    Inventors: William J. Rakocy, Ronald L. Muller
  • Carafe
    Patent number: D268319
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: March 22, 1983
    Assignee: North American Philips Corporation
    Inventors: Paul J. Donoski, Bruce S. Gentilella, Masao Tsuji
  • Coffee maker
    Patent number: D268389
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: March 29, 1983
    Assignee: North American Philips Corporation
    Inventors: Masao Tsuji, William J. Rakocy