Patents Represented by Attorney Orrin M. Haugen

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  • Refrigeration system for ice rinks utilizing pressure control/metering valve
    Patent number: 4514992
    Abstract: A system for providing a refrigerant to an ice rink, the system including a compressor means for compressing a refrigerant, means for delivering the compressed refrigerant to a low pressure receiver vessel, and means for passing refrigerant condensate from said low pressure vessel to a pair of pumper drum vessels. The rink is provided with a plurality of refrigerant transmitting conduits extending from one end thereof to the other, and with a high pressure header extending across one end of the rink and a low pressure header extending across the opposed end of the rink. The high pressure header is provided with a balance header which couples the opposite free ends of this header element together, and an intermediate line or conduit is also provided which couples the central or mid-portions of the high pressure header and the balance header together.
    Type: Grant
    Filed: March 19, 1984
    Date of Patent: May 7, 1985
    Inventor: Richard B. Holmsten
  • Liquid waste application system with sludge gun
    Patent number: 4515311
    Abstract: A vacuum/pressure liquid waste application system for vacuum loading a distribution tank with liquid waste treatment materials and distributing the liquid matter via a pressurized tank and flow-forming and directing sludge gun. Clog-free directional surface application is thereby achieved over relatively rugged or inaccessible terrain.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: May 7, 1985
    Assignee: Ag-Chem Equipment Co., Inc.
    Inventor: Harry H. Takata
  • Sailboard rig
    Patent number: 4512276
    Abstract: A sailboard rig has a mast and a boom running aft from the mast for holding and moving the sail. The boom is more specially in the form of a wishbone boom with the sail in its opening. The mast has a mast foot joint such that it may be turned and heeled over on the board. The sail is joined to the mast at its luff and the aft end of the boom is joined with an aft limit of the sail.In order to make possible better use of the wind and for increasing the top speed of the rig, the sail is made up of a lower panel and two upper panels and the mast is branched so as to have two upper arms spreading outwards towards leeches of the two upper panels of the sail. These upper panels are joined with the lower sail panel at a seam and are joined to the mast arms along luffs so that all in all there is a generally Y-like mast and a sail with a Y-like form of luff.
    Type: Grant
    Filed: September 13, 1983
    Date of Patent: April 23, 1985
    Inventor: Georg Hamann
  • Endless abrasive belts
    Patent number: 4512110
    Abstract: Apparatus for controlling the working force and relative disposition of the work-contacting surface of a driven endless abrasive belt while in contact with the surface of a workpiece held in a working station. The controlling apparatus includes a rigid belt back-up pad which is normally biased in a direction toward the working station, and linear cams are provided which include inclined relatively movable ramps for movably positioning the belt back-up pad into predetermined spaced relationship to the working station. Also, because of the relatively high forces involved, guides are provided for controlling the movement of the belt back-up pad along axes which are normal to the axis of the working station.
    Type: Grant
    Filed: January 11, 1984
    Date of Patent: April 23, 1985
    Assignee: Timesavers, Inc.
    Inventor: Lee E. Stump
  • Hinged bag top folder
    Patent number: 4507906
    Abstract: In a packaging machine, a folder assembly for folding the tops of bags as part of a ceiling operation wherein the folder assembly can accommodate irregularities in the bags without jamming. A first folding station includes a stationary support member to which is hingedly affixed a first and a second folder plate, each having predetermined profiles formed along a working edge thereof. These folder plates are resiliently biased by springs toward their associated support member such that limited freedom to yield in a vertical plane is achieved. Associated with the working edge and spaced slightly therefrom is a front fold blade which, too, is spring mounted to allow a limited yield in a horizontal plane. In the event a jam should occur, the assembly may be readily opened to facilitate the clearing of that jam.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: April 2, 1985
    Assignee: Doboy Packaging Machinery, Inc.
    Inventor: James A. Meyer
  • Wrapping machine and method
    Patent number: 4506488
    Abstract: A horizontal wrapping machine which includes a former for shaping a continuous film of packaging material drawn past the former into a continuous tube, a film drive for drawing the continuous film of packaging material past the former and past a cutting and sealing station, a product infeed drive for feeding products to be packaged through the former into the continuous tube of packaging material so that the products are spaced apart from one another in the tube, and a pair of motor-driven cut-heads at the cutting and sealing station for cutting and sealing the continuous tube of packaging material as each product moves past the cutting and sealing station. The horizontal wrapping machine further includes independent closed loop servo control circuits for the film drive, product infeed drive, and cut-head drive, each of which are responsive to a desired velocity control signal.
    Type: Grant
    Filed: May 13, 1983
    Date of Patent: March 26, 1985
    Assignee: Doboy Packaging Machinery, Inc.
    Inventors: Timothy S. Matt, James B. Wensink
  • Hypodermic jet injector
    Patent number: 4507113
    Abstract: An improved hypodermic jet injector system in which specifically designed adapters are used for joining conventional medicament supply vials to the hypodermic jet injector during the filling of the medicament chamber thereof whereby the valving structure may be greatly simplified and the ready substitution of one medicament for another facilitated such that there is no need to purge the injector device of the previously used medicament. The adapter comprises a relatively low-cost attachment for a medicament supply vial including a stopper-piercing needle having both a liquid passage and an air passage therein. The adapter also includes a hollow recess of a predetermined shape which has a stretchable membrane forming one wall thereof, the membrane having a zero diameter hole formed through it when the membrane is unstretched. The liquid passage of the piercing needle leads to the hollow recess.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: March 26, 1985
    Assignee: Derata Corporation
    Inventor: Kenneth W. Dunlap
  • Portable turntable for use in microwave ovens
    Patent number: 4504715
    Abstract: A portable turntable apparatus for use in microwave ovens which is used as a supporting base for a container of food which is cooked within the oven and adapted to gradually rotate the same, the apparatus including a motor including metallic materials which motor is mounted in and enclosed by a metal housing and an outer enclosure comprising a cover and base of non-metallic material to prohibit electrical arcing between the motor and the oven walls. The housing is provided with smooth outer surfaces and a minimal sized aperture opening to allow a driving connection between the motor and the enclosure cover.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: March 12, 1985
    Assignee: Northland Aluminum Products, Inc.
    Inventors: Jorgen A. Jorgensen, Donald W. Nygren
  • Chimney flue insertion apparatus
    Patent number: 4500078
    Abstract: Multi-legged apparatus for frictionally engaging the interior of a chimney flue liner and inserting same in a chimney via a stanchion or multi-sectioned rods. Each L-shaped leg is containably and rotatably mounted to a center threaded rod. The legs are expandable via a moving carrier containing cantilever arms connected to each of said L-shaped arms, such that by moving said carrier up or down along said center rod, said arms radially expand or contract from said center shaft.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: February 19, 1985
    Inventor: Gerald J. Brennan
  • Pump with ring retained floating wrist pins and connecting rods
    Patent number: 4498372
    Abstract: Improved multi-cylinder pumps wherein a plurality of co-planar positioned connecting rods are radially disposed about a crankshaft and wherein a plurality of generally cylindrical spool-like wrist pins are rotatively coupled to the connecting rods. The improvement comprises an assembly wherein the wrist pins have opposed end regions bordering a smaller diameter central region that contains one or more ring receiving grooves and which wrist pins are mountable in overlapping relation to retainer ring containing grooves formed in the connecting rods. Upon mounting retainer rings in the connecting rod grooves and inserting and rotatively locking the wrist pins in the connecting rods, the connecting rods, wrist pins and retainer rings are integrally locked together in radially extending relation.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: February 12, 1985
    Assignee: Lear Siegler, Inc.
    Inventor: Ramon Pareja
  • Differential planetary gear system for producing complementary levels of forward/reverse drive
    Patent number: 4497220
    Abstract: An epicyclic planetary gear system having a plurality of partially meshed straight-cut primary and secondary planetary gears slidably mounted in a slidable differential housing and partially meshed with respective straight-cut input and output gears. Forward drive is achieved in each of a plurality of forward drive ranges by the respective coupling of the primary planet gears with the secondary planet gears and output gear and the secondary planet gears with the input gear. Reverse drive is similarly achieved for each of the forward ranges via the coupling of the input gear only with the secondary planet gears and the output gear only with the primary planet gears, while restraining rotation of the differential housing.
    Type: Grant
    Filed: April 25, 1983
    Date of Patent: February 5, 1985
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: James E. Grinde
  • Microwave browning utensil
    Patent number: 4496815
    Abstract: A utensil for preparing food in a microwave oven. The utensil is provided with a ferritic-silicone coating upon a metal platter, which ferritic coating is covered by a silicone coating to prevent entry of air to the ferrite which would otherwise result in oxidation and degradation of the microwave heating properties of the ferrite. The metal platter rests upon and within a housing made of a material which is highly transmissive of microwaves and having a very low absorbence of microwave energy so that it remains cool. The housing serves to insulate the platter electrically and thermally from its surroundings.
    Type: Grant
    Filed: January 14, 1983
    Date of Patent: January 29, 1985
    Assignee: Northland Aluminum Products, Inc.
    Inventor: Jorgen A. Jorgensen
  • Apparatus for inductively heating metallic medical and dental tools
    Patent number: 4492840
    Abstract: An induction heating process and apparatus for flameless heating of metallic dental laboratory tools, medical instruments, and the like. The induction heating coil is energized by placement of instruments within the annular zone formed by the windings of the coil, and differential light sensors are utilized to compensate for variations in ambient light levels.
    Type: Grant
    Filed: June 25, 1982
    Date of Patent: January 8, 1985
    Inventor: August Lex
  • Adaptor for external oil filter
    Patent number: 4492632
    Abstract: A seal containing cast adaptor member having inlet and outlet ports for hose coupling to an externally mounted disposable cartridge-type oil filter. The housing thus permits the engine's conversion from a conventional often inaccessibly placed spin-off filter or smaller replaceable cartridge filter to a larger capacity, externally mounted filter.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: January 8, 1985
    Inventor: Fred P. Mattson
  • Coupling system for power take-off shafts
    Patent number: 4492292
    Abstract: A coupling arrangement for drivably interconnecting the PTO shaft of a tractor with a driven shaft for an implement to be operatively towed and powered by the tractor. The implement includes an input power shaft, and the tractor portion of the apparatus includes linkage means for moving the power input shaft with respect to the PTO shaft to render the axes coincident, with means being provided to create a power transmitting coupling or connection between the PTO shaft and the power input shaft.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: January 8, 1985
    Inventor: Charles C. Thor
  • High-lift hydraulic axle
    Patent number: 4492389
    Abstract: The combination of a suspension arm, a stub axle having an axis and projecting from the arm in a first direction, means pivotally mounting the arm for movement about a second axis parallel to the axis of the axle, and motor means for causing the movement of the arm between, and maintaining it in, first and second extreme positions.
    Type: Grant
    Filed: January 21, 1982
    Date of Patent: January 8, 1985
    Inventors: Gordon F. Wyatt, Willis G. Wyatt, Erle L. Wyatt
  • Pressurized/heated variable jet carburetor
    Patent number: 4491552
    Abstract: A monolithic variable jet carburetor comprising an air intake, an associated variable jet and an underlying fuel reservoir, all contained within a pressurized and heated chamber and whereby the fuel is injected into the reservoir under pressure and is atomized via an overlying wire mesh screen and vaporized as it traverses the remainder of the heated delivery path to the air intake. The heated chamber is adapted to heat the fuel at all points intermediate the float chamber and air intake venturi via hot engine gasses or heated engine coolant and wherein the float chamber is further pressurized via an air pump. Pressure/temperature sensors control the relative ratios thereof during normal engine cycling under various load conditions.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: January 1, 1985
    Inventor: Tim Wessel
  • Ski for snowmobile
    Patent number: 4491333
    Abstract: In a steering ski, for a snowmobile, of the type having an elongated body continuous with an upturned forward tip, the improvement which comprises flares extending along the body and upturned at angles in the range between 30.degree. and 60.degree., the flares continuing around the forward tip in a downwardly concave arcuate lip configuration.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: January 1, 1985
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Wayne L. Warnke
  • Apparatus and method for closing reclosable bags
    Patent number: 4490960
    Abstract: A machine automatically applies a tin tie strip across the top of bags in a predetermined series of steps wherein the bag top is closed downwardly twice in a double fold after the tin tie strip is affixed to one of the bag side walls. Glue applied to the exposed, outside surface of the first fold holds the bag top closed in the double fold condition. Bendable lengths of the tin tie strip projecting from the leading and trailing edges of the bag side wall are sequentially bent around the bag top through full 180.degree. turns into snug engagement with the other bag side wall as bags are moved through the machine by conveyor means.
    Type: Grant
    Filed: December 20, 1982
    Date of Patent: January 1, 1985
    Assignee: Doboy Packaging Machinery, Inc.
    Inventor: James H. Klemesrud
  • Back lighted, full travel push button membrane keyboard
    Patent number: 4489227
    Abstract: A keyboard having a side-lighted transparent support plane including a plurality of light-pipes vertically projecting therefrom through an overlying foam over-travel pad. A pair of patterned membrane switch layers, separated by a low density foam spacer, overly the over-travel pad and are positioned relative to a plurality of key-caps slidably mounted to the light-pipes. The sensation of key travel is achieved via the over-travel pad and/or a foam spring mounted beneath the key-caps with switch contact being made intermediate full key depression. An audible click is achieved via overlapping slidably abrasive projections.
    Type: Grant
    Filed: January 11, 1984
    Date of Patent: December 18, 1984
    Assignee: Sheldahl, Inc.
    Inventor: Fredrick W. Lamarche