Patents Represented by Attorney Kent A. Herink

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  • Method for molding a plastic article of varied density
    Patent number: 5437823
    Abstract: A method of molding a plastic part with a controlled density whereby a blowing agent is added to a plastic material and the material is injected into a mold cavity of a mold unit. The interior walls of the mold cavity are maintained at a temperature sufficient to prevent the outer skin of the forming plastic article from producing gas bubbles. The volume of the mold cavity is increased to allow bubbles to produce and uniformly distribute themselves throughout the mold cavity and then a recompression phase is instituted whereby the desired density of the finished plastic article is achieved without voids or aberrations appearing in the surface of the plastic article.
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: August 1, 1995
    Inventors: Siebolt Hettinga, Harold J. Buehl
  • Row crop cutter and conveyor
    Patent number: 5428946
    Abstract: A harvesting apparatus for use with fragile row crops such as tobacco where the produce or leaves must be handled with great care to avoid breakage or bruising. The apparatus has a conveyor system and gathering chains which receive the tobacco from a cutter and engage the stalks and the leaves separately to convey the tobacco to a processing point. A specially designed dual conveyor system contacts the leaves on two sides to adequately support and transport the tobacco without damage.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: July 4, 1995
    Inventors: Elmer K. Hansen, deceased, by Catherine Hansen, administrator and executor
  • Adjustable height wagon
    Patent number: 5429210
    Abstract: An adjustable height wagon capable of being manipulated between an orientation allowing maximum lift and an orientation allowing maximum height. The provision of a lift mechanism below an undercarriage of the wagon increases the stability of the wagon during lifting, and allows a material supporting bed to be drawn into contact with the undercarriage, thereby increasing the stability of both the material supporting bed and the wagon.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: July 4, 1995
    Inventors: Elmer K. Hansen, deceased, by Catherine Hansen, executor
  • Process for the regulation of lyophilization
    Patent number: 5428905
    Abstract: The invention relates to a process for the regulation of lyophilization in which the evaporative flux--that is to say, the output of evaporated water transferred on the trap (4)--is measured in a continuous manner, and action is carried out at the temperature of the racks (2) in order to reach, as close as possible, a predetermined optimal flux.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: July 4, 1995
    Inventors: Guy Beurel, Serge Beurel, Gilles Beurel
  • Beam member for use in concrete forming apparatus
    Patent number: 5426906
    Abstract: A light-weight, high-strength beam member for use in concrete form assemblies. A sheet material is roll-formed into a hollow beam having a trapezoidal transverse cross section. In assembly, a plurality of beam members are attached to a supporting metal concrete forming structure in a parallel, spaced-apart relation. Sheeting or decking is attached to the plurality of beam members by hand driven nails which penetrate a top section the beam members.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: June 27, 1995
    Assignee: Wilian Holding Company
    Inventor: Robert G. McCracken
  • Apparatus for continuous flow weighing
    Patent number: 5423456
    Abstract: Apparatus for continuous flow weighing of a flowable material includes a pair of sequential conveyors. A first, control conveyor moves material from an inlet to a discharge point. A second, weighing conveyor is mounted for pivotal movement about a horizontal axis at its inlet end. The pivot point is positioned below the discharge of the control conveyor. The outlet end of the weighing conveyor is suspended from and weighed by a load cell. Electronic control circuitry monitors the material transport rate of the weighing conveyor which, in combination with the output of the loadcell, is used to determine the weight flow rate of material being discharged from the weighing conveyor. The material transport rate of the weighing auger is adjusted to result in a preselected weight flow rate.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: June 13, 1995
    Assignee: Larry V. Arendonk
    Inventors: Larry V. Arendonk, Paul Schroder
  • Method for injection molding a plastic part using a film gate
    Patent number: 5422059
    Abstract: A method and apparatus for injection molding a plastic part using a film gate. The film gate is constructed of a pair of tenon members which retract into a mortise tooled into a mold section. Because the tenon members extend to release the dross formed in the runner, the film gate may be placed in the center of the mold section to decrease the pressure gradient in the curing plastic and to allow the gate to be located where aesthetic aberrations, from the removal of the dross, will not be a problem in the finished article.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: June 6, 1995
    Inventor: Siebolt Hettinga
  • Railway part pallet
    Patent number: 5409110
    Abstract: A method and apparatus for storing mechanical railway parts within individual cradles for transportation and storage. The cradles are designed to securely store and protect fragile parts while allowing for easy manipulation and recognition of the parts positioned within the cradles. Additionally, the cradles may be stacked to allow a greater number of mechanical railway parts to be shipped or stored in a given amount of space.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: April 25, 1995
    Assignee: Patent's Railroad Packaging, Ltd.
    Inventor: Lowell Patent
  • Spray gun with disposable mixer
    Patent number: 5405083
    Abstract: An apparatus for mixing and spraying a catalyst with a resin onto a surface. The resin and catalyst are internally mixed within a disposable mixing tube. After the spraying is completed, the catalyzed resin is allowed to harden within the tube and the tube is thereafter disposed of. Because the catalyst and resin are not mixed within any reusable portions of the spraying apparatus, the need for rinsing with acetone or similar hazardous solvents is eliminated.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: April 11, 1995
    Assignee: American Matrix Technologies, Inc.
    Inventor: Jeffrey D. Moses
  • Method for spraying plants and apparatus for its practice
    Patent number: 5402945
    Abstract: An improved method for row crop spraying whereby a solution is atomized by high speed air, imparted with an electrical charge, slowed with more high speed air, and deposited over crops including a nozzle for practicing such a technique. Such charged droplets are attracted to oppositely charged crops and are, therefore, more likely to adhere to crops than fall to the ground or to be swept away by the wind. Since a larger percentage of solution adheres to the plant, less solution can be applied thereby addressing both environmental and pecuniary concerns.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: April 4, 1995
    Assignee: Gervan Company International
    Inventor: Wallace A. Swanson, Jr.
  • Process and apparatus for desiccation
    Patent number: 5398426
    Abstract: The invention relates to a process and apparatus for desiccation in which the exterior walls of the apparatus are heated and cooled in synchronization with the interior of the apparatus to avoid temperature gradients and inconsistent desiccation of material placed within the apparatus. The apparatus wall temperature regulating means also allows for more accurate sterilization of the apparatus after the desiccation process has been completed.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: March 21, 1995
    Assignee: Societe' De Gestion Et De Diffusion North America, Inc.
    Inventor: John T. Connor
  • Apparatus for assessing relatedness from autoradiograms
    Patent number: 5400249
    Abstract: Apparatus and method for assessing relatedness from autoradiograms. A scanner reads and digitizes the one or more banded lanes of an autoradiogram and communicates the information to a digital computer. The information is processed and analyzed to rationalize the banded lanes with a standard. Similarity coefficients and dendrograms of relatedness are generated.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: March 21, 1995
    Assignee: University of Iowa Research Foundation
    Inventors: David R. Soll, Holly J. Hugart, Edward R. Voss
  • Splatter-free ear irrigation device
    Patent number: 5395357
    Abstract: A substantially closed apparatus for deflecting and retaining waste fluids issuing from the ear canal of a patient being irrigated by a caregiver. The device is preferably transparent thereby allowing the caregiver to accurately manipulate the irrigator within the ear canal and to monitor the waste retainer to determine when the container must be emptied. The substantially closed configuration of the device prevents waste fluids issuing from the ear canal from contacting and contaminating the caregiver which could result in the transfer of infection and disease.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: March 7, 1995
    Inventor: Perry L. Weigel
  • Adjustable side form concrete mold
    Patent number: 5393033
    Abstract: An adjustable concrete mold which varies the height of a side form on a casting bed to any desired height, The device is also of a construction which allows total exposure of the sides of a hardened concrete element after casting and which allows complete clearance of the side form away from the main bed to allow easy removal of the hardened concrete element from the main bed.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: February 28, 1995
    Assignee: Wilson Concrete Company
    Inventor: Charles W. Wilson
  • Amphibious vehicle and control
    Patent number: 5392871
    Abstract: An amphibious vehicle having a hull and pair of multiple-flighted outriggers which coact to stabilize and propel the vehicle over land and water. The speed and direction of the vehicle is controlled by a joystick allowing an operator to move the craft over land and water with a single hand. The multiple flighting and positioning of the outriggers adds efficiency and stability to the vehicle while the joystick control adds ease of operation.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: February 28, 1995
    Inventor: Douglas McFarland
  • Mounting apparatus for a bridge of a trenching machine
    Patent number: 5392540
    Abstract: A trenching bridge mounting interface for a trenching machine that is adjustable to alter the effective length of a fixed length bridge so as to accommodate trenching bars of different lengths. The interface includes a prime mover mounting structure that is releasably secured to the prime mover of the trenching machine and a bridge mounting structure attached to the fixed length bridge. The effective length of the bridge is adjusted between a short length and a long length by reversing of the prime mover mounting structure.
    Type: Grant
    Filed: June 10, 1993
    Date of Patent: February 28, 1995
    Assignee: Vermeer Manufacturing Company
    Inventors: Mark Cooper, Keith Roozeboom
  • Spray gun with a catalyst injector and a manifold block
    Patent number: 5388768
    Abstract: An apparatus for mixing and spraying a catalyst with a resin onto a surface. The resin and catalyst are delivered to a mixer having no O-rings which could become clogged with catalyzed resin and destroy the gun. The manifold is connected to a mixer which is connected to an air supply. The spray gun eliminates the need for any check valves within the manifold.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: February 14, 1995
    Assignee: American Matrix Technologies, Inc.
    Inventor: Jeffrey D. Moses
  • Spray gun with orifice union
    Patent number: 5388764
    Abstract: An apparatus for mixing and spraying a catalyst with a resin onto a surface. The apparatus is provided with a restricted orifice union on the resin line running into the manifold. The union traps large plugs of resin and prevents them from entering and clogging the manifold. The union is designed so that plugs of resin may be easily removed from the resin line with only a minimum of down time.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: February 14, 1995
    Assignee: American Matrix Technologies, Inc.
    Inventor: Jeffrey D. Moses
  • Spray gun with check valve
    Patent number: 5388767
    Abstract: An apparatus for mixing and spraying a catalyst with a resin onto a surface. The resin and catalyst are internally mixed in confluence with pressurized air. The sprayer is provided with a specially designed check valve to prevent resin and catalyst from entering the pressurized supply line. The construction of the check valve prevents it from clogging or becoming stuck shut during operation.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: February 14, 1995
    Assignee: American Matrix Technologies, Inc.
    Inventor: Jeffrey D. Moses
  • Combined trailer coupler housing and handle
    Patent number: D361541
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: August 22, 1995
    Assignee: Dico, Inc.
    Inventor: Martin L. Denny