Patents Represented by Law Firm Dawson, Tilton, Fallon & Lungmus
  • Patent number: 3947983
    Abstract: A resistant tag structure which includes a laminate of a thin metal foil and a web of high density self-bonded spun polyethylene fibers, the laminate being generally rectangular and having a web face equipped with printed indicia for the receipt of tag information, as by carbon imprinting.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: April 6, 1976
    Inventor: Jerome J. Brunette
  • Patent number: 3947958
    Abstract: A method of preparing an electrical fitting wherein a knurled wire is inserted into a molded plastic part to provide reliable anchoring of the wire as a lead for a coil form or the like.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: April 6, 1976
    Assignee: Precision Paper Tube Company
    Inventor: William A. Bowers
  • Patent number: 3947699
    Abstract: An input signal is fed to one signal lead of a gate or switch and, at the same time, to circuitry for initiating and terminating the conduction period of the gate. A bistable circuit is controlled by the initiation and termination circuitry, and it feeds the control lead of the gate to couple a predetermined portion of the input analog signal to an output. The initiation and termination circuitry provides for independent selection of the polarity of the slope and the amplitude of the incoming waveform in defining the start and end points on the incoming waveform for coupling to the output.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: March 30, 1976
    Assignee: Iowa State University Research Foundation, Inc.
    Inventor: Delbert O. Whitmer
  • Patent number: 3947013
    Abstract: A method of zig-zag folding and apparatus therefor wherein two endless belts are each equipped with tuckers and grippers to engage a web continuously and uniformly advanced toward the point of tucker web engagement, the paths of belt travel in the zone contacting the web to be zig-zag folded being of the order of about 60.degree., and wherein there is a means for providing a controlled surplus of the web spaced upstream of the point of folding, the surplus being released at the time of folding to provide precise position of the folds independent of speed.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: March 30, 1976
    Assignee: Paper Converting Machine Company
    Inventor: Ernst Daniel Nystrand
  • Patent number: 3946256
    Abstract: A device for generating or sensing transverse elastic bulk waves in solids includes a piezoelectric material engaging a surface of the solid and having a two-fold axis or equivalent symmetry extending parallel to the surface of the solid. A pair of electrodes are located on a surface of the transducer extending perpendicular to the surface of the solid which the material contacts. Each electrode has one or more conductive fingers elongated in a direction parallel to the two-fold axis of the material. The fingers of the electrodes are interlaced. When used as a generator of bulk waves, a source of alternating voltage excites the electrodes. The electrodes thus generate deep surface waves in the piezoelectric material which are transformed into bulk waves in the test solid. Similarly, bulk waves in the test solid are transformed into deep surface waves in the piezoelectric material which may then be sensed by the electrodes.
    Type: Grant
    Filed: December 10, 1971
    Date of Patent: March 23, 1976
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Clifford K. Day, George G. Koerber
  • Patent number: 3945525
    Abstract: A closure system for a medical liquid container having a dispensing outlet surrounded by a flange over which is fitted a plastic cap. The cap is externally threaded and has an outwardly-projecting brim at its lower end overlying the flange. The brim is sealed to the flange along an annular zone having an inner boundary defining an annular line of weakness, and an internally-threaded breakaway ring is threadedly disposed on the cap. The breakaway ring includes a plurality of circumferentially-spaced depending projections for stressing the brim along portions of the annular line of weakness and for initiating and propagating the rupture of the brim as the breakaway ring is screwed downwardly upon the cap.
    Type: Grant
    Filed: June 6, 1974
    Date of Patent: March 23, 1976
    Assignee: American Hospital Supply Corporation
    Inventor: Eugene C. Jones
  • Patent number: 3944205
    Abstract: A stirrup extension bar is slidably received in an elongated tubular channel equipped at its mouth with a brake pad, and the innermost end of the extension bar is equipped with a brake pad. If the coefficient of friction between the pads and interior channel walls is greater than about 0.9, the horizontal frictional forces tending to hold the bar in place are sufficiently greater than the force tending to unseat the bar, so that the bar remains locked in place. When the stirrup assembly held by the outer end of the extension bar is raised, the brake pads release and the extension bar may be adjusted horizontally. Normal use forces apply the locking force after adjustment.
    Type: Grant
    Filed: May 20, 1974
    Date of Patent: March 16, 1976
    Assignee: American Hospital Supply Corporation
    Inventor: Floyd F. Mueller
  • Patent number: 3943605
    Abstract: A fluff pad for an absorbent product such as a diaper, sanitary napkin or the like is formed by superposing two layers of fluff top-to-top. The layers are formed separately but simultaneously on conveyor wires. The non-wire side of a layer is the "top". Each layer is scarffed and debulked. One layer is removed from its wire by suction and placed with its wire side engaging a wrap sheet traveling beneath the wire on which the second fluff layer is formed. The second layer is removed from its wire by applying suction from beneath, through the wrap sheet and first layer to deposit the second layer on the first in inverted relation. An additional dispersion sheet may be added between the fluff layers, if desired.
    Type: Grant
    Filed: May 16, 1974
    Date of Patent: March 16, 1976
    Assignee: Paper Converting Machine Company
    Inventor: Ernst Daniel Nystrand
  • Patent number: 3942523
    Abstract: A double-fenestrated surgical drape, especially suitable for use in those operations requiring entry through both the abdominal wall and the perineum, comprising a pair of rectangular non-woven cellulosic sheets of unequal size joined together in overlapping relation to provide a narrow reinforced zone of increased thickness interposed between the fenestrations of the respective sheets.
    Type: Grant
    Filed: January 17, 1975
    Date of Patent: March 9, 1976
    Assignee: American Hospital Supply Corporation
    Inventor: Helen T. Rudtke
  • Patent number: 3941554
    Abstract: A combination propane lantern, pressure regulator-valve, and pressurized propane fuel container in which the lantern is supported by the regulator-valve and the propane container, and the rate at which fuel is delivered to the lantern remains substantially constant and independent of pressure within the propane cylinder and ambient temperature. The lantern includes a burner assembly which extends upwardly from the base of the lantern, and the regulator-valve is connected to the burner assembly. The regulator-valve housing is provided with an internally threaded recess into which the connector fitting of the propane container is screwed, and the container thereby supports the regulator-valve and the lantern. The regulator-valve includes a rotatable adjusting knob which can be used to vary the fuel flow through the regulator-valve between fully closed and fully opened positions and therefore also serves as an on-off valve.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: March 2, 1976
    Assignee: The Coleman Company, Inc.
    Inventor: Richard D. Curtis
  • Patent number: 3941538
    Abstract: An apparatus for forming rings which are made from a formable food mass, made, for example, from onion pieces and a binder. The apparatus includes a hopper for containing the food mass. A rotating cylindrical member is horizontally mounted within the hopper and annular openings are preferably provided in the outer periphery of the cylindrical member for receiving the food mass at a first position. A ring is reciprocally mounted within each of the annular openings, the rings being reciprocated between the loading position and a discharge position, at which the rings are moved towards and beyond the periphery of the cylindrical member. To separate the formed rings from the cylindrical member, a moving cutter is provided near the discharge position.
    Type: Grant
    Filed: June 4, 1973
    Date of Patent: March 2, 1976
    Assignee: Central Soya Company, Inc.
    Inventor: Gerald J. Orlowski
  • Patent number: 3941040
    Abstract: A fume hood includes a polygonal-shaped work top providing three or more equally-spaced work areas. A tubular column with a lower apertured portion is located at the center of the work top for exhausting heavier-than-air gases. A plenum located above the work top and supported by the tubular column is provided with slots located above the work openings for collecting and exhausting lighter-than-air gases. Transparent viewing screens permit inspection of all work locations from a single vantage point. A central pedestal is used to support the hood and to route plumbing and electrical conduits from the floor. The system is easily convertible between up-draft and down-draft exhaust without the need for special baffles.
    Type: Grant
    Filed: February 12, 1975
    Date of Patent: March 2, 1976
    Assignee: E. H. Sheldon and Company
    Inventor: Arthur W. Carlson
  • Patent number: 3940249
    Abstract: A laboratory testing procedure wherein test tubes are uniquely supported under conditions of refrigeration, the test tubes being placed in a generally vertical position with only the test tube bottom portions in contact with the top surfaces of a closed refrigerant reservoir having heat-absorbing means confined therein.
    Type: Grant
    Filed: June 17, 1974
    Date of Patent: February 24, 1976
    Assignee: Streck Laboratories, Inc.
    Inventor: James E. McClurg
  • Patent number: 3940619
    Abstract: A sequence of separate radiographs are made by indexing a radiation source along a known path relative to the object under study. Thus, each radiograph contains information from a different perspective. A holographically-recorded image is then made from each radiographic perspective by exact re-tracing of the rays through each radiographic perspective such that the re-tracing duplicates the geometry under which it was originally prepared. The holographically-stored images are simultaneously illuminated with the conjugate of the reference beam used in the original recordings. The result is the generation of a three-dimensional real image of the object such that a light-sensitive device can be moved to view the real image along any desired surface with the optical information in all other surfaces greatly suppressed.
    Type: Grant
    Filed: May 30, 1974
    Date of Patent: February 24, 1976
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: William A. Ellingson, Alvin A. Read
  • Patent number: 3940212
    Abstract: A furniture bracket and method of using the same wherein the bracket secures vertically related, wood framed furniture pieces and includes a unitary metal body having a plurality of openings extending there through and defined by generally frusto conical walls projecting a greater distance away from the body than a perimetric flange thereon to provide a bighting engagement with the frame while stabilizing the bracket securement.
    Type: Grant
    Filed: April 2, 1975
    Date of Patent: February 24, 1976
    Inventor: Kenneth H. Gutner
  • Patent number: 3938688
    Abstract: A tray assembly for the delivery and service of foods, such assembly including base and cover sections having a plurality of opposing recesses for enclosing a number of dishes, cups, and other utensils needed for a complete meal service. Proper vertical alignment of the two sections as they are fitted together is facilitated by corresponding lateral indentations in the side walls of both parts which serve in manual guiding of the cover into position upon the base, and by arcuate shoulders spaced circumferentially about a generally central recess in one of the sections, such shoulders being received in a complementary channel in the other section. Lugs disposed within the channel are received in notches between the arcuate shoulders only when the cover and base sections are in precise rotational alignment.
    Type: Grant
    Filed: January 7, 1974
    Date of Patent: February 17, 1976
    Assignee: American Hospital Supply Corporation
    Inventor: Jay Edward Ryan
  • Patent number: 3938513
    Abstract: An improved filter and valve assembly used in combination with a medical syringe for blocking, and thereby protecting a patient against, the infusion of particulate matter. The filter element is fixed within the bore of the syringe and a tubular valve body is secured within a central opening in the filter element. A flexible closure formed integrally with the tubular valve body opens and closes the valve passage, which serves as a filter by-pass, when the plunger of the syringe is raised (withdrawn) and lowered (depressed).
    Type: Grant
    Filed: January 3, 1974
    Date of Patent: February 17, 1976
    Inventor: Thomas S. Hargest
  • Patent number: 3938718
    Abstract: A backpack permits the wearer to adjust the shoulder straps, backband, and waistband to his individual needs or desires. An integral molded plastic frame is specially contoured to avoid restrictions of motion on the person wearing it. The frame is provided with a number of slots which permit attachment of the sack and adjustment of the locations at which the shoulder straps, backband and waistband or belt are attached. The shoulder straps include loops of material which fit through the slot and are held in the desired position by a specially designed removable fastener. The waistband may also be sized to the individual wearer's requirements by selectively adding or removing one of a plurality of pads which are threaded onto the belt for comfort.
    Type: Grant
    Filed: April 11, 1974
    Date of Patent: February 17, 1976
    Assignee: The Coleman Company, Inc.
    Inventor: George Benjamin Madison
  • Patent number: 3935761
    Abstract: An improved chuck wrench for contra-angle dental handpieces. The wrench includes a unitary angular C-shaped body, one of the arms of the body being provided with a socket and recess for accurately locating the wrench in position relative to the head of a handpiece when chuck adjustment (or removal) is desired. Between the paired arms is a knurled cylindrical wheel dimensioned to fit comfortably between, and be rotated by, the same fingers that receive the narrower connecting portion of the C-shaped body. A torsion spring shaft extends through the wheel and into the socket and has a non-circular end portion receivable within an opening of a handpiece chuck for locking the two parts (chuck and shaft) against independent relative rotation.
    Type: Grant
    Filed: February 19, 1975
    Date of Patent: February 3, 1976
    Assignee: American Hospital Supply Corporation
    Inventors: Wolfgang O. Junkel, Jeffrey M. Kneipper
  • Patent number: 3934722
    Abstract: A tamperproof sterile needle package including a relatively rigid cartridge loosely supporting a hypodermic needle for aseptic removal. After the cartridge is opened, the needle is removed by tipping the cartridge body and spilling the loosely-supported needle onto a sterile surface. When sealed within the cartridge, the needle and its tip are fully protected against damage and contamination despite the loose fit between the parts. The cartridge includes a cover with an integral lever which is lifted to pry the cover free of the body, without contaminating either the needle or the mouth of the cartridge, when removal of the needle is desired.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: January 27, 1976
    Assignee: American Hospital Supply Corporation
    Inventor: Allan M. Goldberg