Patents Represented by Law Firm O'Rourke & Harris
  • Patent number: 4439818
    Abstract: A flexible electric lighting strip is disclosed that can be utilized in various lengths, is capable of three dimensional movement, and provides evenly distributed illumination. The lighting strip is formed by an adhesive tape having a plurality of light emitting diodes thereon connected in parallel with each other with each light emitting diode being connected in series with a resistor also mounted on the tape.
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: March 27, 1984
    Inventor: Joseph J. Scheib
  • Patent number: 4437031
    Abstract: A separate comb transducer is disclosed in a ZnO/Si SAW device to enable doubling of the possible operating frequency for a given photolithographic capability of the device. Frequency doubling is made possible by a single-phase structure having conductive and non-conductive surfaces equal to one-half of the SAW wavelength. By connection of two such structures in parallel, a balanced separate comb transducer is achieved for reducing signal levels due to direct coupling that otherwise occurs in the single-phase structure. Separate comb grating transducers are also disclosed to enable fabrication of higher frequency MZOS convolvers, with both the separate comb transducer and separate comb grating transducer being shown utilized in both the Rayleigh and Sezawa modes.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 13, 1984
    Assignee: Purdue Research Foundation
    Inventors: Robert L. Gunshor, Robert F. Pierret, Michael R. Melloch
  • Patent number: 4436030
    Abstract: A novel mechanical power coupling means employed with a novel material compacting apparatus and utilizing either reciprocal or continuous drive inputs with the coupling means. In the preferred compacting apparatus embodiment a reciprocal drive is used such that the compactor is powered by both reciprocating movements of the input shaft. The compactor may be driven in a variety of speed/torque arrangements using the novel coupling means. The coupling means includes a wrapped spring clutch which automatically engages the highest speed mechanical arrangement capable of overcoming the load on the output shaft.
    Type: Grant
    Filed: August 11, 1982
    Date of Patent: March 13, 1984
    Assignee: Nelson & Johnson Engineering
    Inventor: John A. Ciciora
  • Patent number: 4427306
    Abstract: A radiometer apparatus is described that is particularly useful for detecting clear air turbulence by sensing infrared radiation. The radiometer includes optics for directing infrared radiation past a chopper, lens and infrared filter assembly to a radiation sensor which produces an analog output signal that is routed through an N-path filter unit and then demodulated and integrated by an averaging integrator to produce temperature indicative differences for determination of the presence of clear air turbulence in the area then being examined by the apparatus, the N-path unit and averaging intergrator providing a high signal to noise ratio. An automatic calibration unit is also provided to provide stability and reliability to the apparatus.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: January 24, 1984
    Assignee: University Patents, Inc.
    Inventor: Hugh P. Adamson
  • Patent number: 4425920
    Abstract: Apparatus and method for measurement and control of blood pressure are disclosed. Blood pressure is indirectly continually monitored without use of a pressure transducer by sensing the pulse transit time to different sites in an artery, which transit time is inversely related to blood pressure, and developing pulses therefrom which are utilized to form arterial pulse waves, the comparison between which provide an indication of measured blood pressure. This indication is used to control blood pressure by controlling automatic release of a suitable drug into the body in amounts and over a time period as needed. The unit for measuring blood pressure includes two sets of electrodes positioned adjacent to but outside an artery at two sites (with the electrodes implanted or outside the body).
    Type: Grant
    Filed: October 24, 1980
    Date of Patent: January 17, 1984
    Assignee: Purdue Research Foundation
    Inventors: Joe D. Bourland, Leslie A. Geddes, Charles F. Babbs, Willis A. Tacker, Jr.
  • Patent number: 4423736
    Abstract: A method is disclosed for evaluating erythema utilizing skin reflection measurements. By collecting and analyzing data representative of both normal and erythematous skin utilizing reflectance spectra within a range of 400 to 700 nm, distinctive spectral features of erythema have been identified. A relationship representing a function of normal and erythematous skin reflectance at three specific wavelengths (500 nm, 550 nm, and 595 nm) was developed to provide an absolute measure of the vascular response of the skin, which measure is independent of pigmentation characteristics of the skin and takes into consideration normal fluctuations in skin color. By varying the exposure of the skin to radiation from a predetermined source and then measuring the reflectance of the skin at particular time periods and at a plurality (preferably three) of different wavelengths, the relative changes in superficial blood volume due to erythema are isolated.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: January 3, 1984
    Assignee: Purdue Research Foundation
    Inventors: David P. DeWitt, Robert E. Hannemann, Barrett F. Robinson, Edward J. Hanley
  • Patent number: 4422444
    Abstract: An improved solar energy control system and method are disclosed that enables efficient utiliziation of heat produced from solar energy in heating air and/or water. The system and method sense the availability of heat along with the need for such heat at monitored areas and, responsive thereto, selectively directs the heat to the monitored areas as necessary to cause the temperature in each area to be increased to predetermined levels. To most efficiently utilize heat derived from a solar collector, the heat initially made available from the collector is directed to the water within a temperature monitored water heater when the water is sensed to be at a temperature lower than the air in a temperature monitored room.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: December 27, 1983
    Inventor: William Webb, Jr.
  • Patent number: 4420272
    Abstract: A bushing formed of an outer body and an inner sleeve member adapted to rotate within the outer body, the outer body having a bore adapted to rotatably receive the inner sleeve member such bore being eccentric, i.e. offset and/or skewed, relative to the axis around which the outer surface of the outer body is generated, and the inner end member having a usually tapered bore similarly eccentric to the axis of the outer surface of the inner sleeve member such that the inner member may be rotated relative to the outer body with the eccentricity of the bore of the outer body and the bore of the inner member either being additive or cancelling such that the effective eccentricity of the inner bore may be adjusted to the outer surface of the outer body to provide, for instance, caster and camber compensating bushings for vehicles, and other similar eccentric bushing uses.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: December 13, 1983
    Inventors: William E. Ingalls, Thomas W. O'Rourke
  • Patent number: 4420489
    Abstract: Simple sugars with sulfur replacing the ring oxygen atom protect normal healthy cells of animals from radiation or from any other reaction that produces free radicals and damages the cells through the action of the free radicals. To be effective, the thio-sugars must undergo transport to cells that may be adversely affected by free radicals. 6-Thio-D-fructose is an example of a sugar that is readily transported from the gastrointestinal tract to the cardiovascular system and thereby disseminated to cells throughout the body. As it is absorbed into the cells, it protects against all kinds of radiation that adversely affects cells through the creation of free radicals. It is believed to be effective against all high-energy radiation that produces free radicals in living material, and therefore is effective against radiation such as X-ray, gamma, alpha, pi mesons, neutrons, and ultraviolet light radiation. Therefore, it even offers protection against sunburn.
    Type: Grant
    Filed: October 7, 1981
    Date of Patent: December 13, 1983
    Assignee: Purdue Research Foundation
    Inventor: Roy L. Whistler
  • Patent number: 4414771
    Abstract: Method and apparatus for storing at least one fish hook in a channel, preferably an arcuate channel positioned around an axis and having a cross section complimentary to the fish hook shape, with the eye portion of the fish hook disposed radially outward from the axis of the channel and with the axis of the opening of the eye disposed parallel to the axis of the channel, and preferably with a plurality of fish hooks being protectively disposed in the channel with spring means urging the fish hooks toward one end of the channel against a resilient containment member confining the fish hooks to the channel at the end thereof adjacent openings in the apparatus of a size approximating that of the fish hook eye and positioned adjacent the fish hook eye at the location at which the fish hook is restrained by the containment member, the openings being divergent on at least one side of the fish hook eye such that a fish hook may be urged by the spring means to the end of the channel, contained there by the containmen
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: November 15, 1983
    Inventor: Harley D. Martin
  • Patent number: 4413389
    Abstract: A releasable buckle structure and method in which a curved planar engaging member releasably interlocks with a curved planar receiving member, the engaging member having a U shaped opening defined therein and the receiving member having a complementary U shaped solid portion adapted to engage the U shaped opening with the projecting center portion of the U shaped opening extending through the open center of the U shaped solid portion with the solid portion bearing on the concave side of the curved engaging member, the engaging member including a handle portion which, when angularly displaced, induces the solid portion to ride along the concave curved surface of the engaging member until releasing through the slot defining the bottom of the U shaped opening, both the engaging member and the receiving member including means to engage separate belt ends and, in a preferred embodiment, including a narrowed slot at the bottom of the U shaped opening and a displaced center portion of the U shaped opening to reduce
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: November 8, 1983
    Assignee: Lowe Alpine Systems, Inc.
    Inventor: Greg E. Lowe
  • Patent number: 4411530
    Abstract: A system and method for rapid beneficiation of bentonite clay is disclosed. Beneficiation of the bentonite clay occurs through oxidation of structural ferrous iron. For rapid beneficiation, bentonite clay, preferably ground, is subjected to moist air while the clay is being agitated, preferably by tumbling within a rotating drum, to provide rapid exchange of moisture and oxygen in the air with the bentonite clay aggregates to thereby increase the speed of oxidation of ferrous iron in the bentonite clay. Drying of the thus treated bentonite clay may be then achieved by agitating the clay, again preferably by tumbling within a rotating drum, in the presence of dry air.
    Type: Grant
    Filed: January 13, 1982
    Date of Patent: October 25, 1983
    Assignee: Purdue Research Foundation
    Inventors: Philip F. Low, Charles B. Roth, Joseph W. Stucki
  • Patent number: 4406396
    Abstract: Method and apparatus for regulating the flue draft in heating systems including a combustion volume, a flue communicating with the combustion volume, and a vent opening between heated ambient air and the flue, the regulation being accomplished by sensing the flow of air through the vent into the flue, and modulating the setting of a downstream damper to maintain such flow at a predetermined, positive but minimal value. A particularly preferred embodiment includes a temperature sensor positioned at the flue side of the vent and connected to a control system to maintain the damper at such a position that the temperature at such location is at a predetermined value above that of the ambient air temperature, and thus indicative of flow of ambient air into the flue at minimal values approaching incipient spillage of combustion gases at the vent.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: September 27, 1983
    Inventor: Millard A. Habegger
  • Patent number: 4406359
    Abstract: Apparatus and method for transporting articles, such as cylindrical containers, between differing elevations by initially conveying articles onto a foraminous belt, conducting the belt over a first plenum having a curved supporting surface to secure the articles to the belt and the belt to the surface by means of vacuum while transitioning the articles and belt from a level to an inclined orientation, conveying the articles to a differing elevation while inclined by securing the articles between parallel, spaced belts, and again transitioning from an inclined orientation to a level orientation by passing the foraminous belt over a second plenum having a curved supporting surface and securing the articles to the belt and the belt to the surface by means of vacuum during transition from the inclined orientation to the horizontal orientation.
    Type: Grant
    Filed: January 22, 1981
    Date of Patent: September 27, 1983
    Assignee: Goldco Engineering, Inc.
    Inventors: Rodger E. Cole, Richard H. Vander Meer
  • Patent number: 4404855
    Abstract: An instrument wherein the downwards or upwards displacement of menisci under the action of a pressure differential in a U-tube arrangement is magnified by a factor of 10.sup.4 or more. This measurement precision is accomplished by determining the volume of manometer fluid displaced via the observation of motion of an air bubble inside a horizontal capillary tube connecting the large and equal diameter vertical legs of a manometer.
    Type: Grant
    Filed: October 15, 1981
    Date of Patent: September 20, 1983
    Assignee: Purdue Research Foundation
    Inventor: Wolfgang Leidenfrost
  • Patent number: 4400007
    Abstract: Apparatus for positioning an offset or skewed bushing body with small incremental adjustments in a suspension member having fixed positioning lugs to secure the bushing body having an offset or skewed bore, a number of locating projections defined around the outer circumference thereof, an independent lock ring having a plurality of indentations defined around the inner circumference of the ring and adapted to engage the locating projections of the bushing body, the lock ring further having at the outer circumference thereof a plurality of indent pairs positioned to engage the locating lugs of the suspension member, and means to secure the lock ring to the bushing body, whereby the offset or skewed bushing body may be positioned in a suspension member, receive the tapered short portion of a ball joint, rotated to locate the ball joint with appropriate corrections to caster and/or camber, and maintained in such position by the locking ring which engages the locating projections of the bushing body at the inner
    Type: Grant
    Filed: December 28, 1981
    Date of Patent: August 23, 1983
    Assignee: Thomas W. O'Rourke
    Inventor: William E. Ingalls
  • Patent number: 4400717
    Abstract: A color slow-scan TV system and method are disclosed for selecting U.S. standard NTSC TV color pictures (or alternately other standards such as PAL or non-standard color TV) to be transmitted, transmitting the selected pictures utilizing slow-scan techniques, and reconstructing the pictures after transmission for display. The system includes a video compressor (transmitter) for receiving a composite video signal indicative of a color TV picture and providing therefrom a color slow-scan output signal indicative thereof, and a video expander (receiver) for receiving color slow-scan signals after transmission and providing therefrom a fast-scan output signal suitable for display of the color TV picture.
    Type: Grant
    Filed: April 21, 1981
    Date of Patent: August 23, 1983
    Assignee: Colorado Video Incorporated
    Inventors: Glen R. Southworth, Larry R. McClelland, Bruce F. Johnson
  • Patent number: 4391424
    Abstract: A method and structure for selectively conducting pressurized gas flow over the upper surface of an airfoil, the airflow being selectively directable either rearward through a spanwise outlet to produce thrust and augment lift or, alternatively, directed forward to spoil the aerodynamic flow over the wing to diminish lift and provide a reverse-thrust braking. The structure includes a plenum defined in the airfoil and ducting to receive pressurized air or gas, the plenum being defined in part by a panel longitudinally pivoted at the central portion thereof to, preferably, change the area of a rearward directed opening while concurrently and proportionally changing in the opposite sense the area of a forward oriented opening to selectively direct the pressurized air or gas rearwardly, forwardly, or in combinations of openings while preferably maintaining a substantially constant opening area.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: July 5, 1983
    Assignee: Ball Brothers
    Inventor: Otto E. Bartoe, Jr.
  • Patent number: D270734
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: September 27, 1983
    Inventor: Gary P. Emerson
  • Patent number: D271419
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: November 15, 1983
    Assignee: Technology Applications Group, Inc.
    Inventor: Patrick E. Hoff