Patents Represented by Law Firm Dugger, Johnson & Westman
  • Patent number: 4056883
    Abstract: A heater construction for inductively heated rotating rolls which have inductive heater coils made up of a large number of turns of wire. The heater wire used for winding the coil has a high temperature insulation, preferably an inorganic material such as glass fiber, which may be impregnated with silicone in order to prevent abrasion as it is being wound. As each layer or wire is wound into coil form a coating of ceramic paste or ceramic material is applied to fill the interstitial spaces between the wires to provide a coil construction that has no voids within it that would permit relative movement between the wires to the extent that they could abrade and short out against each other.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: November 8, 1977
    Assignee: Rosemount Inc.
    Inventor: Kenneth H. Danner
  • Patent number: 4057250
    Abstract: The present invention relates to the construction of sports rackets, such as those used for tennis and similar games. The racket has weight means which moves transverse to the plane of the racket stringing, mounted adjacent to the bow or head of the racket to provide inertial rebound deadening when the racket strikes a ball.
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: November 8, 1977
    Inventor: William G. Kuban
  • Patent number: 4056276
    Abstract: A door lock device suitable for operation with electrically operated means, which in turn can be actuated by magnetic card, special turn key, or a key punch combination for security purposes. If desired the lock device may be operated with a suitable mechanical or key lock mechanism. The door lock comprises a pivoting latch dog or bolt which is triggered to a locked position upon closing of a door. The pivoting dog or bolt is controlled by a toggle linkage which can be positioned near, on, or over-center to hold the door positively locked against external pressure. Means are provided for releasing the toggle linkage, even under loads against the door, by force directly applied to the toggle linkage between the end pivots of the linkage, and in addition springs are provided for moving the latch dog to an open position positively once the toggle linkage has been released. As the linkage is released the latch bolt moves the door to an ajar position.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: November 1, 1977
    Inventor: Kenneth W. Jarvis
  • Patent number: 4055690
    Abstract: A greeting card includes a three dimensional hanging ornament comprising a star-like configuration that is erected in a unique manner after it has been punched out from the card. The card is oriented to provide a greeting message on one panel, which can be removed for keeping, while the other panels form the punched out star and can be erected into a hanging ornament.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: October 25, 1977
    Inventor: Michael P. Patterson
  • Patent number: 4054177
    Abstract: A trip beam linkage for moldboard plow or other earth working tools which trips to clear obstacles such as rocks and the like and uses a sturdy, compact and reliable folding tripping linkage which permits reliable, high clearance tripping using tension springs. The linkage lengths are selected to permit reliance on a high spring force for initial holding, which is more reliable than over center or near center trip linkages. The folding linkage is positioned so spring expansion is kept to a minimum during tripping. The linkage can be adjusted to permit aligning the earth working tool. The working position of the linkage is determined by an adjustable stop.
    Type: Grant
    Filed: August 21, 1975
    Date of Patent: October 18, 1977
    Inventor: Sherman H. Quanbeck
  • Patent number: 4054018
    Abstract: The present device comprises a bag filling apparatus which will clamp and hold a bag onto an output spout which forces in material such as pulverized or loose fill cellulose fiber used in insulation, and provides means for holding the bag in place, and providing a compressive force against the material as it is placed into the bag so that the material is forced into the bag and has substantial density when the bag is filled. The device includes means for automatically releasing the bag holder when the bag is filled a preselected amount.
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: October 18, 1977
    Assignee: Haybuster Manufacturing, Inc.
    Inventor: Chester G. Neukom
  • Patent number: 4054120
    Abstract: A blow gun and projectile combination for use in connection with targets which provide safety, enjoyment, and fun without being hazardous. The blow guns are accurate with the projectiles used, and the projectiles are extremely lightweight and do not have sufficient mass to cause injury if fired so that they strike a person. In addition, the blow gun includes mouthpiece indentations. These indentations cooperate with a disc located on the forward end of each projectile to prevent the projectiles from being inhaled through the mouthpiece by a user of the blow gun.
    Type: Grant
    Filed: May 12, 1976
    Date of Patent: October 18, 1977
    Inventor: Charles F. Foley
  • Patent number: 4051362
    Abstract: A wall mounted hinged base providing a strong, attractive and convenient structure for mounting a luminaire to a building wall, thereby saving the cost of a lighting pole and foundation. The base is easily installed and has a hinge axis that may be placed on either the right or left hand side of the mounting base.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: September 27, 1977
    Inventor: Kenneth F. Guggemos
  • Patent number: 4044420
    Abstract: A pan cleaning apparatus for use with bun and roll pans in bakeries which will use a combined air blast and vacuum action to loosen seeds, crumbs or the like as well as other foreign material which may be lodged in a bun pan after use. The device may include brushes arranged to brush all of the corners and recesses of the pan adequately for loosening material with the air blast-vacuum hood which removes debris from the pan used as a final cleaning stage.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: August 30, 1977
    Inventor: Douglas R. Hanson
  • Patent number: 4044721
    Abstract: A fish tank construction which is made with interior partitions through which fish can swim and which has "rooms" simulated as those normally inhabited by human beings as backdrops to provide a form of simulated house. The construction includes a fish cross-over whereby fish can swim in a "skyway" arrangement between adjacent tanks.
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: August 30, 1977
    Inventors: Charles F. Foley, Lewis J. Halberstadt
  • Patent number: 4041645
    Abstract: Window controls for controlling large window units to permit the windows to be mechanically raised and lowered for ventilation purposes in a reliable, efficient, and low cost manner. The controls include means for automatically locking the window units against intrusion, when the windows are closed or partially open, and further the window controls are simplified by providing edge mounting frames for the glass only at the top and bottom edges of the glass. In some forms of the invention, where it is desired, the windows can carry automatically positionable screens for screening the vent openings.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: August 16, 1977
    Inventor: Jack T. Nourse
  • Patent number: 4040195
    Abstract: Page turner apparatus that includes a book support having a transverse ledge and a top flange, a slide plate on the support for transverse movement, the slide plate having a plurality of parallel slots for the pages to be turned extended therethrough, and operable mechanism for mounting the slide plate and selectively moving the slide plate to turn a page. The operable mechanism of each of the first and third embodiments includes a toothed rack slidably mounted on a slide rod and attached to the slide plate, and a foot pedal operated cable for selectively moving the rack in a page turning direction. In the second embodiment the operable mechanism includes a motor for driving a rod having a threaded portion cooperating with the threaded portion of a slide plate mounting block for transversely moving said block.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: August 9, 1977
    Assignee: Donald C. Delich
    Inventors: James P. Claypool, Gerrit Hoogenraad
  • Patent number: 4037289
    Abstract: Apparatus for maintaining surfaces that includes a powered mobile machine having a frame, a scrubbing tool, a liquid distributor ahead of the scrubbing tool, a clean solution tank for supplying liquid to the liquid distributor, a housing mounting the tool, a rear squeegee assembly and side squeegee assemblies, a dirty solution tank on the frame, and a vacuumized system for withdrawing liquid collected by the rear squeegee assembly and transferring it to the dirty solution tank. The rear squeegee assembly is preferably parabolic in plan view. Scissor type linkages are connected to the housing or other parts of the machine and each of the rear and side squeegee assemblies and are spring urged to urge the respective assembly downwardly with nearly constant pressure. Further, in each of the first and second embodiments of the rear squeegee assembly, parallel linkages mount the rear squeegee assembly for limited vertical movement relative the housing.
    Type: Grant
    Filed: November 19, 1975
    Date of Patent: July 26, 1977
    Assignee: Tennant Company
    Inventor: Harold D. Dojan
  • Patent number: 4034633
    Abstract: A safety shield construction for use with wood turning lathes and similar machines which provide a "see through" shield mounted in a perimeter frame which is movable between closed and open positions. Inertia actuated locks prevent the shield from being knocked open by a sharp blow from a broken workpiece, but permit the shield to be moved to the open position manually. The inertia locks are fail safe and are moved to locked position whenever the shield is moved to closed position. Thus if the inertia locks become inoperative they will be in locked position for safety. The shield construction includes rigid supports attached to the lathe bed which utilize a rigid torque tube that attaches on brackets which permit adjustment of the shield along the length of the lathe to not only serve as a shield for long workpieces, but also as a shield during face plate operation.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: July 12, 1977
    Assignee: Toolmark Co.
    Inventor: Paul S. Petersen
  • Patent number: 4035752
    Abstract: A device for heating a room or building thermostat by radiant means or a combination of conduction, convection and radiation in such a manner as to cause localized thermal energy in the vicinity of the thermostat. The temperature of the area controlled by the thermostat is thus caused to be reduced by an amount approximately equal to the rise in temperature in the vicinity of the thermostat. The heater, as shown a small light bulb, is switched on by a timer for the time period during which the building or room temperature is to be reduced. The light is turned off when the area temperature is returned to the thermostat setting.
    Type: Grant
    Filed: June 30, 1975
    Date of Patent: July 12, 1977
    Assignee: Research, Incorporated
    Inventor: James R. Anderson
  • Patent number: 4033566
    Abstract: A linear spring system using pneumatic cylinders arranged to give a substantially linear force versus displacement curve across a wide range of displacement and which is capable of providing large forces with mechanism.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: July 5, 1977
    Assignee: MTS Systems Corporation
    Inventor: Niel R. Petersen
  • Patent number: 4031574
    Abstract: A timed ventilator for toilets which mounts entirely within the toilet tank, and which operates from a battery power source to remove air from the toilet bowl and move the air through a charcoal filter for deodorizing. An external control includes an automatic time delay which will hold the fan on for a desired amount of time necessary to change the air in the small volume of the toilet bowl.
    Type: Grant
    Filed: June 17, 1976
    Date of Patent: June 28, 1977
    Inventor: Frank D. Werner
  • Patent number: 4024910
    Abstract: A heat or cold storage system utilizing a plurality of channels dug directly into the earth and filled with rocks which are used to absorb heat or cold for storage, a part of such storage being the rocks themselves and a (usually much larger) part being the adjacent earth. Conduit connections are provided for carrying heat or cold to the rocks.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: May 24, 1977
    Inventor: Frank D. Werner
  • Patent number: 4023795
    Abstract: A ski exerciser used for simulating the motions required in cross-country skiing on which a skier can practice and exercise under conditions substantially similar conditions to those encountered during cross-country skiing.
    Type: Grant
    Filed: December 15, 1975
    Date of Patent: May 17, 1977
    Inventor: Edward A. Pauls
  • Patent number: 4022473
    Abstract: A game apparatus for playing matching games involving colored pegs wherein two players, one on each of the sides of the apparatus will select four pegs of color and place them in a particular sequence unknown to his opponent. A game board provided has apertures for receiving pegs in horizontal rows so that each player can mark on the game board the peg color and sequence arrangement he guesses to be the arrangement selected by his opponent. The game board then is rotated and each player checks his opponent's lineup of pegs and indicates on the board with additional marking pegs whether the opponent matched the player's colors and/or mated the position of the player's pegs. The board is then rotated again and each player again attempts to deduce or guess the opponent's colors and mate the order of colors on a different line of apertures. Play continues until one player matches both the colors and the order of colors of his opponent.
    Type: Grant
    Filed: June 10, 1975
    Date of Patent: May 10, 1977
    Inventor: Charles F. Foley