Patents Represented by Attorney John A. Mitchell
  • Patent number: 4695414
    Abstract: A method and apparatus for pressing powder material in which powder is dosed into a die (48) and with the aid of at least one press means (14) is compressed to a ready detail, pressing continuing until a desired final position of the press means or a desired press force has been achieved.The actual value for the position of the press means (14) is sensed when desired press force has been achieved, or the actual value for the press force is registered when the final position has been achieved. The registered actual value is compared with a predetermined criterion value and the pressed detail is accepted or rejected depending on the size of the deviation between actual and criterion values.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: September 22, 1987
    Assignee: Convey Teknik AB
    Inventors: Alf Forslund, Goran Andersson
  • Patent number: 4340139
    Abstract: A blow molded carrying case comprises a base and a cover, each of which is formed of double walled blow molded construction. The top wall of the base extends along the rear wall and has an opening formed therein along the front wall, whereby access is provided to the interior of the base below the top wall, which in turn defines a shelf in the base. The cover has side walls which are generally complementary in plan to the side walls of the base. The cover and base have first cooperating means which define an interrupted hinge for pivotally connecting the cover to the base and second cooperating means for latching the cover to the base in a closed position.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: July 20, 1982
    Assignee: Show-Pak, Incorporated
    Inventors: Donald G. Wilcox, Nobile Zambrano
  • Patent number: 4340140
    Abstract: The disclosed package consists of a base having sidewalls defining a top opening providing access to the interior of the package and a flat flexible cover substantially complementary to the opening. The sidewalls have top edges, with the top edge of one wall located below the top edges of the other sidewalls. The base includes shoulders for supporting the cover below the top edge of the shorter of the sidewalls; and flanges or extensions project from the top edges of the other three walls to resist upward movement of the cover relative to the base while permitting the cover to be placed on the base by a sliding movement.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: July 20, 1982
    Assignee: Show-Pak, Incorporated
    Inventors: Donald G. Wilcox, Nobile Zambrano
  • Patent number: 4198844
    Abstract: A tube expander for expanding or flaring the ends of automobile exhaust pipes and the like includes a segmented expander die having an arbor slidably received within the expander die segments for expanding the die upon movement of the arbor in a first predetermined direction. A manually operated device initially moves the arbor in the first direction to expand the die until the die segments engage the interior surface of the tube end to be expanded, and a separate independent hydraulic mechanism is then operated to move the arbor in the first direction in order to flare the tube to increase its diameter by a predetermined dimension. The compact structure provided enables the tool to be manually operated to flare tubes in situ on an automobile.
    Type: Grant
    Filed: January 5, 1979
    Date of Patent: April 22, 1980
    Assignee: J & S Hydraulics Inc.
    Inventors: Jerome R. Lowe, Frank P. Russo
  • Patent number: 4177538
    Abstract: A windshield wiper element is disclosed which includes an elongated backing strip having a slot formed therein and a squeegee element having a bulbous head received in the slot. The backing strip has a plurality of breakage indications provided thereon at predetermined spaced locations, corresponding to predetermined windshield wiper lengths, to permit it to be used as a universally applicable windshield member with different sizes of super-structure. The backing strip includes means located between each of the breakage indications for engaging the head of the squeegee in order to resist longitudinal removal of the squeegee from the backing strip.
    Type: Grant
    Filed: July 27, 1978
    Date of Patent: December 11, 1979
    Assignee: Tridon Limited
    Inventors: William M. Blaiklock, Brian A. Fisher
  • Patent number: 4174857
    Abstract: A game ticket which is particularly useful as a lottery ticket is claimed. The ticket basically comprises at least a base sheet and a cover sheet which are adhesively joined together in a peripheral portion. Information to be concealed is placed on the surface of the base sheet which faces the cover sheet. This information is concealed by covering it with a suitable, removable material which is opaque thus concealing the information until the opaque material is removed. In order to provide security for the ticket so that the purchaser may be sure that no one has been able to determine whether or not it is a winning ticket prior to being opened by the purchaser, a tear line of perforations extends through the cover and base sheets and the ticket must be torn along this line to gain access to the covered or concealed information.
    Type: Grant
    Filed: December 28, 1977
    Date of Patent: November 20, 1979
    Assignee: Canadian Tag & Label Ltd.
    Inventor: John R. Koza
  • Patent number: 4162934
    Abstract: A method of producing a sorption body is disclosed in which a plurality of sheets of asbestos paper are formed from a fiber pulp having molecular sieves placed therein. The sheets are arranged in contact with one another at spaced points to form transectional channels therebetween for the media which are to pass through the body, with the sheets supporting each other. The assembled sheets are subjected to an increase in temperature sufficient to drive off the organic binding agents present in the paper and to break down the asbestos fiber to a powdery consistency.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: July 31, 1979
    Assignee: Aktiebolaget Carl Munters
    Inventor: Per Norback
  • Patent number: 4122943
    Abstract: A dispensing container for combining and then dispensing two discrete materials includes a first open top container element for containing the first material, e.g. a fluid and a second container element having closed upper and lower ends for containing the other of the two materials, e.g. a powder or a liquid. The second container element is dimensioned to be telescopically received with its lower end within the open topped container element. A valve is provided in the lower end of the second container element for normally keeping the materials in the container elements separate but permitting fluid in the first container element to flow into the second container element upon depression of the second container element, thereby causing materials in the two containers to combine. The upper end of the second container element may be provided with a removable cover so that the mixed materials can be dispensed.
    Type: Grant
    Filed: October 21, 1976
    Date of Patent: October 31, 1978
    Assignee: Jules Silver
    Inventors: Jules Silver, Jerome Silverstein
  • Patent number: 4076013
    Abstract: A solar heating system for a building consists of a stressed-skin roof structure which includes at least one layer formed of longitudinally extended channel-shaped beam members, wherein each beam member is generally U-shaped in cross-section and positioned with its open channel directed outwardly of the building. These beam members are placed side by side with their central bight portions lying in substantially the same plane. The open outwardly facing channels of the beams are closed to form a closed channel or air space which is heated from the sun. A heat storage bed is associated with the building and means are provided for selectively circulating air from the closed channels in the layer of beams to heat the storage bed and to return the air from the storage bed to the closed channel. The heat stored in the storage bed is selectively distributed to the interior of the building through a separate air circulating circuit.
    Type: Grant
    Filed: March 11, 1976
    Date of Patent: February 28, 1978
    Assignee: Universal Construction Industries, Inc.
    Inventor: Joseph A. Bette
  • Patent number: 4050612
    Abstract: A dispenser for flowable materials such as creams, includes a pair of open ended containers nested telescopically with each other at their open ends, with the upper container having a dispensing orifice formed therein adjacent its upper end and containing a hollow dispensing channel communicating at one end with at least a portion of the orifice and having its other end located adjacent the open end of the upper container. A piston is received in the upper container for sliding movement with respect to the dispensing channel and has a hollow rod operatively connected to it which telescopically engages the dispensing channel. This hollow rod has a bottom end that engages the closed end of the lower container and also has an opening formed therein adjacent its bottom end to provide communication between the interior of the lower container and the hollow rod.
    Type: Grant
    Filed: May 25, 1976
    Date of Patent: September 27, 1977
    Assignee: Jules Silver
    Inventor: Thomas Stone
  • Patent number: 4025668
    Abstract: A method of manufacturing a contact body is disclosed wherein the contact body is built up of thin layers of hydrated asbestos fibers shaped between mutually spaced support positions to form channels extending from end to end of the contact body. The layers have a coating thereon of at least one inorganic substance and the layer body is heated to at least the dehydration temperature of the asbestos, at which the water of crystallization is released by passing a current of hot gas through the channels in the contact body for a relatively short period of time in order to effect the intended action on the body.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: May 24, 1977
    Assignee: Aktiebolaget Carl Munters
    Inventor: Per Norback
  • Patent number: 4021282
    Abstract: A method of manufacturing a contact body for at least one flowing medium is disclosed wherein layers of asbestos fibers are formed and arranged so that the layers bear against one another at mutually spaced positions to provide channels in the body extending from one end thereof to the other to allow the flowing medium to pass therethrough. The layers of the contact body are first treated by supplying to the layers at least one inorganic substance which produces a hydrated precipitate on the asbestos fibers of the layers. Thereafter the layers are heated to a temperature which is at least within a temperature range at which the hydrated precipitate releases its water of crystallization, but which temperature is below the sintering temperature for the substances remaining in the body. As a further step, at least one further substance is supplied to the contact body layers which restores the mechanical strength of the body lost by the transformation of the asbestos fibers during the heating step.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: May 3, 1977
    Assignee: Aktiebolaget Carl Munters
    Inventor: Per Norback
  • Patent number: 4021590
    Abstract: A method of manufacturing a contact body is disclosed wherein layers of asbestos are formed and arranged so that the individual layers bear against one another at mutually spaced positions to provide a plurality of channels extending through the body from one end to the other with the layers being heated together with at least one substance containing silicon and aluminum to sintering temperature. The addition of silicon and alumina to the contact body is adjusted so that in the sintered layers the ratio, by weight, of the oxide of silicon to the oxides of aluminum and magnesium is in the range of 45-55% SiO.sub.2, 30-45% Al.sub.2 O.sub.3 and 10-20% MgO.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: May 3, 1977
    Assignee: Aktiebolaget Carl Munters
    Inventor: Hakan Vangbo
  • Patent number: 3997635
    Abstract: The invention relates to a method and a device for preventing formation of mist by the discharge of moistened air from an evaporative cooler, primarily a cooling tower of the multi-layer type, comprising a contact body composed of a plurality of layers forming between themselves gaps passed by water to be cooled and atmospheric air which is moistened and heated by contact with the water in counter-current or cross-current flow. Under certain conditions as when the temperature of the atmospheric air is so low, when the moistened and heated air is discharged to the atmosphere and cooled to the low temperature of the latter, the moisture contained in the discharged air will be condensed and precipitated in the form of mist to the extent it exceeds the saturation point of the air. Such precipitation can be avoided by mixing the moistened air prior to its escape into the atmosphere with preheated dry air.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: December 14, 1976
    Assignee: Aktiebolaget Carl Munters
    Inventor: Karl A. Hallgren
  • Patent number: 3983190
    Abstract: A contact apparatus for effecting the interaction of air and water including at least one bed mounted in a casing of units positioned side by side with each unit composed entirely or partly of corrugated, vertically positioned layers or sheets for receiving water supplied from the top of the casing and air flowing upwardly from the bottom of the casing. The bed has a downward slope from the air intake side of the casing towards the interior of the apparatus.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: September 28, 1976
    Assignee: Aktiebolaget Carl Munters
    Inventor: Per Gunnar Norback
  • Patent number: 3947532
    Abstract: A gas and liquid contact apparatus includes at least one pair of generally vertically aligned contact bodies having pairs of opposed generally vertically and horizontally extending edge portions. The contact bodies have passageways formed therein which penetrate between the two opposed vertical edges of the body, with the horizontal edges thereof being open to admit liquid into the passageways. A liquid impervious distribution strip is located between the adjacent spaced horizontal edges of the contact bodies and extends across one of the vertical edges thereof, to deflect liquid migrating to the one vertical edge toward the other vertical edge of the contact body therebelow.
    Type: Grant
    Filed: June 17, 1974
    Date of Patent: March 30, 1976
    Assignees: Buffalo Forge Company, Aktiebolaget Carl Munters
    Inventors: Jan O. Skold, Virendra Nath Kapoor
  • Patent number: D257191
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: October 7, 1980
    Assignees: Donald G. Wilcox, Show-Pak Inc.
    Inventor: Donald G. Wilcox