Patents Represented by Attorney Harvey G. Lowhurst
  • Patent number: 4511952
    Abstract: A fluid lamp assembly (10) converts a candlestick (24) to a fluid lamp. A rubber stopper (20) fits into cup (22) of the candlestick (24). The assembly (10) has a hollow glass container (12) with a bottom (14) having a pointed tip (16) which fits into hole (18) in the rubber stopper (20). A fiberglass wick (34) extends into oil reservoir (40) and has a tip extending from opening (26) in container (12).
    Type: Grant
    Filed: July 13, 1983
    Date of Patent: April 16, 1985
    Inventor: Willy Vanbragt
  • Patent number: 4451152
    Abstract: There is disclosed a method for sampling and examining a fluid from a tank or flow line to determine density or turbidity, including a sampling chamber attached to the tank or line with a piston in a chamber. The piston is provided with a sealing ring which circumscribes one end of the piston and which provides a fluid-tight seal within the chamber so that moving the piston away from the tank or line pulls a sample into the chamber. The sealing ring comprises a main body portion which circumscribes the piston and is in contact therewith but which is not in sealing engagement with the chamber. Extending outwardly from the main body portion of the sealing ring and integral therewith is a frusto-conical skirt. The outermost edge of the frusto-conical skirt is in sealing contact with the cylinder. A light source is provided to transmit light into the sample and a photodetector is provided to detect light from the interior of the chamber.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: May 29, 1984
    Assignee: Monitek, Inc.
    Inventors: George J. Topol, Chadwick L. Trent
  • Patent number: 4428370
    Abstract: An insertion unit for a vaginal diaphragm which is formed of a hollow tubular member with a plurality of flexible segments integral with the forward end to define an opening if flexed outwardly. A movable piston in the tubular member which holds the diaphragm in a lengthwise folded position and which, when the tubular member is withdrawn rearwardly, flexes the segments outward, to allow the diaphragm to move out of the tubular member and spring into position in the vaginal canal.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: January 31, 1984
    Inventor: Patricia G. Keely
  • Patent number: 4397515
    Abstract: An improved center conductor element for a miniature female, air dielectric, coaxial connector that has two concentric tubes, one of which is the inner and shorter tube and the other is the outer and longer tube. The inner shorter tube engages the pointed end of the male pin and provides for centering of the mating male pin, and the longer outer tube is slotted to form fingers which make contact, at their ends, with the male pin.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: August 9, 1983
    Assignee: Krytar, Inc.
    Inventor: Thomas J. Russell
  • Patent number: 4380235
    Abstract: A metered drop dispenser utilizing a drop former in which the facing end walls of a pair of coplanar, spaced apart plate members form a channel which is open on two sides and which has outwardly flared end portions at the channel exit.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: April 19, 1983
    Assignee: Anatros Corporation
    Inventor: Hal C. Danby
  • Patent number: 4351872
    Abstract: An orthopedic traction harness which engages the skin around the limb to be put in traction. The traction harness comprises an inner, circumferentially adjustable, laminated traction band having an outer layer of a compressible sponge material, a central layer of a flexible unidirectional stretch mesh and an inner layer of another compressible sponge material, and an outer, variable pneumatic pressure cuff including a flexible air bladder inside an adjustable containment cuff having a squeeze bulb and a pressure indicator.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: September 28, 1982
    Assignee: Harvey G. Lowhurst
    Inventors: Janet V. Brosseau, Jon A. Brosseau
  • Patent number: 4335835
    Abstract: A portable device for accurately metering a liquid for intravenous or enteric infusion into a patient's body in which the pressure from a pressure source is utilized to pressurize the liquid and the pressurized liquid becomes the sole driving force to meter and to infuse the liquid into the body. The pressurized liquid is applied alternately to one of a pair of flexible liquid bladders the other one being connected to a discharge device such as a tube so that, as one liquid bladder is filled with pressurized liquid, the other bladder is emptied into the patient. The expanding liquid bladder and the contracting liquid bladder cooperate with a teeter totter type control which applies pressure to the contracting liquid bladder and is damped to control the rate of expansion and contraction. The position of the teeter totter controls the valving for applying pressurized fluid from one side to the opposite by alternatively selecting channels of fluid flow to each liquid bladder.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: June 22, 1982
    Assignee: Anatros Corporation
    Inventors: Myron A. Beigler, Hal C. Danby
  • Patent number: 4318362
    Abstract: A floating concrete dock comprised of floating units such as headers and fingers with the fingers depending outwardly from headers and connected to one another by continuous hinges. Each floating unit includes a deck portion and a pair of stem portions depending downwardly from the lower surface and spaced inwardly from the side edges of the deck portion and defining a double-T (channel beam) section with a channel between the stem portions, and buoyancy material disposed in the channel. The deck portion and the stem portions have longitudinal tension rods for maintaining the entire floating unit under longitudinal compression.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: March 9, 1982
    Inventor: Henry W. Jung
  • Patent number: 4314324
    Abstract: In a transformer power supply, a full wave rectifier is series connected in circuit with the primary winding of the transformer such that the current flowing through the primary winding of the transformer flows in series through the input of the full wave rectifier. An inductive load is connected across the output terminals of the full wave rectifier such that the rectified output current flows through the inductive load. The full wave rectifier preferably uses silicon controlled rectifiers which are phase triggered in such a manner so as to control their conduction angles so as to control the power flow from the source to the load connected to the secondary of the transformer. The inductance of the load for the rectifier preferably exceeds the critical inductance so as to minimize ripples in the secondary of the transformer. This type of power supply circuit is particularly useful for supplying power to an electron gun which is subject to arcing.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: February 2, 1982
    Assignee: Energy Research Associates
    Inventors: Emmett R. Anderson, Douglas S. Schatz
  • Patent number: 4310808
    Abstract: The high power laser includes a high gain medium (>80%) such as a lightly doped Nd:YAG rod contained within an unstable optical resonator of the type wherein power flows outward from the optical axis of the resonator. The output beam is coupled out of the resonator by means of a coupling device having a high coupling factor (>55% of the circulating power inside the optical resonator) and in a preferred embodiment the coupling factor is as high as 80-90%. The optical resonator is preferably a confocal resonator employing one concave mirror and one convex mirror. The convex mirror forms the output coupling device for providing a high degree of diffraction output coupling around the periphery of the output mirror. The output beam is collimated in the region of the output mirror.
    Type: Grant
    Filed: September 20, 1979
    Date of Patent: January 12, 1982
    Assignee: Quanta-Ray, Inc.
    Inventors: Robert L. Byer, Richard L. Herbst
  • Patent number: 4307487
    Abstract: In a wax applicator for defeathering fowl, a pot is provided for containing a waxy composition into which the fowl to be defeathered is immersed for coating of the feathers with molten waxy material. A squeegee, preferably in the form of a centrally apertured and radially slotted rubber diaphragm, is disposed over the molten liquid material in the pot for ruffling the feathers of the fowl as it is pushed through the squeegee into the waxy material and for squeegeeing the excess molten waxy material from the fowl as the coated fowl is withdrawn from the pot. An outwardly flared support structure is disposed over the open end of the pot for holding the coated fowl and for draining the excess molten waxy material from the fowl back into the pot. The support structure is preferably hinged to the side walls of the pot such that the flared support structure pivots downwardly for storage in coaxial relation to the side walls of the pot.
    Type: Grant
    Filed: January 14, 1980
    Date of Patent: December 29, 1981
    Inventor: Terry B. Sullivan
  • Patent number: 4306725
    Abstract: A card game comprising a pack of playing cards including fifty-two cards each having the same rectangular configuration and size and visually similar rear face. The front face of each card is divided into a first and second visually distinct zone, each of the first and second zones bearing the same readily recognizable letter of the alphabet and being either of one color or another color. Each zone of each card includes indicia of a different word representative of a selected subject of category of words followed by a dictionary definition. A spin dial in the nature of a board having a spinning pointer and an annular ring divided into fifty-two equal sectors allows spinning of the point with the head of the pointer eventually coming to rest on one of the sectors which uniquely identifies one of the fifty-two cards.
    Type: Grant
    Filed: August 22, 1980
    Date of Patent: December 22, 1981
    Inventor: Hermon R. Sawyer
  • Patent number: 4306223
    Abstract: A data handling system for converting an analog signal into binary form for storage or transmission to a remote receiver and subsequent reconstruction back into a facsimile of the original analog signal. The encoder portion of the system, which is a synthetic equivalent of an adaptive inverse filter, includes a signal comparator, an adaptive function generator and a binary pulse generating means. The signal comparator provides a signal responsive to the difference between the input analog signal and the output of the function generator, and the pulse generating means converts the difference signal into the encoded binary form for storage or transmission to a receiver. The decoder portion of the system includes an adaptive RC filter means which is controlled by the encoded data so as to reconstruct the original analog signal.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: December 15, 1981
    Assignee: Rapicom, Inc.
    Inventor: Donald R. Weber
  • Patent number: 4300606
    Abstract: A wood splitting axe head for mounting on an axe handle in which the weight is distributed such that the plane through the center of gravity of the axe head (gravity plane) is offset with respect to the longitudinal plane through which the axe is swung and which passes through the center of the axe handle (swing plane). Further, the splitting edge of the blade is separated from the gravity plane in the direction of the swing plane and has one face parallel to the swing plane which is provided with a step to limit axe penetration into the wood and to initiate a turning motion of the axe head after impact.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: November 17, 1981
    Inventor: Johnny R. Branson
  • Patent number: 4295105
    Abstract: Novel apparatus and techniques for the modulation of a signal from one frequency band to another frequency band are disclosed. An integrator is changed between the inverting and non inverting modes, each mode occurring with each half cycle of a carrier signal. The modulating signal is sampled and applied to the integrator to provide the modulated signal. The modulator circuit components are fully suitable for fabrication on a single substrate.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: October 13, 1981
    Assignee: Racal-Vadic, Inc.
    Inventor: John A. C. Bingham
  • Patent number: 4292722
    Abstract: In a lead screw drive, such as that used in a lightweight lathe or milling machine for driving the workpiece relative to the cutting tool, the core of a drive nut is made of a material having a relatively low melting temperature, such as babbitt metal or a relatively rigid thermoplastic material. The low melting point material is contained within a nut housing as of steel. The openings in the nut housing for passage of the lead screw are scaled in a fluid type relation by means of elastic sealing members as of silicone rubber having a melting point above that of the relatively low melting point core portion of the nut. An electrical heating cartridge element is contained within the nut housing in good thermally conductive relation with the low melting point core material.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: October 6, 1981
    Assignee: Pacific Western Systems, Inc.
    Inventor: Daniel A. Worsham
  • Patent number: 4293316
    Abstract: The detector region of a gas analyzer is interfaced to a source of gas under analysis, such as the atmosphere, by means of an adsorber type preconcentrator, which preferentially adsorbs the gaseous constituent of interest, such as relatively heavy hydrocarbons, while permitting the other lighter hydrocarbons, water vapor, and permanent gases to pass thereby without appreciable adsorption. After a substantial volume of gas to be analyzed has passed through the adsorber stage, the adsorbed materials are desorbed from the surface of the adsorber into the input stage of a membrane separator. As a consequence, the partial pressure of the constituent of interest is greatly increased at the input stage of the membrane separator. The gaseous constituent of interest is then passed through the membrane separator, and further separated therein from water vapor, the permanent gases and some of the lighter hydrocarbons and then passed into the detector region of the gas analyzer.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: October 6, 1981
    Assignee: Harry E. Aine
    Inventor: Barry Block
  • Patent number: 4283178
    Abstract: An electromechanical braille cell is disclosed wherein each cell includes six braille indicia formed by the free ends of a vertical stack of cantilever supported piezoelectric reeds. Applying an operating potential to a respective reed causes the reed to bend about a fulcrum at the supported root end of the reed causing the free end to deflect in such a manner as to cause the indicia rod to protrude through an opening in the reading surface of the braille cell. Simultaneous energization of one or more of the reeds in the respective stack defines a given braille character sensed by the operator. The free ends of the reeds are tiered in pairs in a stair step configuration so that the sensing rods from a lower pair of reeds pass by the free end portions of the reeds of a higher step. The upper reed of each pair of reeds is notched to allow passage of the sensing rod associated with the lower reed of that pair of reeds.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: August 11, 1981
    Assignee: Telesensory Systems, Inc.
    Inventor: James F. Tetzlaff
  • Patent number: 4278755
    Abstract: An improved halftone dot screen for use in reproduction of continuous-tone graphic images is disclosed. The screen comprises a two-dimensional matrix of cells (dots) each cell having a common pattern of transmittance to radiation utilized in the reproduction process. The common pattern of transmittance for each cell is characterized by a finite number of different discrete transmittance level patterns. In a preferred embodiment, these patterns include portions arranged along the respective sides of a parallelogram. In one preferred embodiment, the discrete transmittance level patterns comprise an array of concentric parallelograms. Each parallelogram has a plurality of dot portions arranged along the sides of the parallelogram. The sides of the parallelogram patterns are preferably disposed at a substantial angle to the horizontal to reduce moire and rosette pattern effects and to simplify the reproduction process.
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: July 14, 1981
    Assignee: Lumin, Inc.
    Inventor: Hua-Kuang Liu
  • Patent number: 4270332
    Abstract: Several embodiments of window frame assemblies comprising novel window framing members for supporting a glazing product are described. In one embodiment, a window frame assembly is described comprising a conventional framing member including a novel rotatable rod means for preventing the cutting through of the framing member as by a saw. In another embodiment, a window frame assembly is described comprising a frame member for installing pre-glazed windows with or without a rotatable rod means in the framing member, said member including a separately attachable leg member for attaching the pre-glazed window to a pre-installed sub-framing member. In still other embodiments, window frame assemblies are described comprising novel mullions for joining pairs of pre-glazed windows. The mullions, as described, may optionally include means for the attachment of a partition and the aforementioned rotatable rod means.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: June 2, 1981
    Assignee: Montrouil Enterprises, Inc.
    Inventor: George W. Montrouil