Patents Assigned to Sandco Ltd.
  • Patent number: 4236882
    Abstract: Apparatus for pelletizing liquid and viscous products. A body of the liquid or viscous material is enclosed within a chamber having discharge orifices or nozzles at the bottom of the body of liquid. There is a body of gas above the liquid which is subjected alternately to increased and decreased gas pressures so that the pressure on the body of liquid is first above and then below atmospheric pressure. That causes the product to be discharged from the orifices in droplets. The droplets are then solidified to form pellets. A predetermined liquid level is maintained within the chamber. The changes in gas pressure are produced by operating a valve which connects the body of gas in the chamber alternately to a suction line and supply line for gas under pressure.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: December 2, 1980
    Assignee: Sandco Ltd.
    Inventor: Otto Weinhold
  • Patent number: 4009775
    Abstract: There is disclosed a device for turning longitudinal rows of french toast. The turning operation is performed by a flipper positioned between the two cooking zones which pushes spatula means under the product with a movement against the movement of the conveyor. The spatula is then swung about an axis transverse to the movement of the conveyor and directly above the cooking surface, and the product is turned or "flipped" along an arcuate path progressively with respect to the movement of the conveyor.
    Type: Grant
    Filed: April 16, 1976
    Date of Patent: March 1, 1977
    Assignee: Sandco Ltd.
    Inventors: Robert Wolfelsperger, Richard J. Bozzo
  • Patent number: 4007351
    Abstract: A method and apparatus for installing endless steel belts or steel bands of improved characteristics on machines of the type having a large roll and an endless steel belt extending around the roll and held under tension against the roll surface as the roll is turned. This type of equipment is used for producing a continuous sheet of a product by feeding a layer of the feed products in between the belt and the roll to thereby compress the products while subjecting them to a heat treatment. The belts must be replaced from time to time and must be repaired upon occasion, and the present invention permits such replacement and repair with belts having very high tensile strength.
    Type: Grant
    Filed: September 24, 1974
    Date of Patent: February 8, 1977
    Assignee: Sandco Ltd.
    Inventors: Karl Bertil Verner Annerhed, Rolf Ingemar Hemlin
  • Patent number: 4004870
    Abstract: A dual-belt system for solidifying products such as hot-melt resins by passing a product layer through a treatment zone formed by two endless steel belts. The product layer is precooled so that the product strip has substantially the desired cross-sectional shape prior to entering the treatment zone. During the precooling step the product spreads by the action of gravity, and the rates of precooling and movement are such as to insure that the product strip has dimensions within acceptable tolerances.
    Type: Grant
    Filed: June 4, 1975
    Date of Patent: January 25, 1977
    Assignee: Sandco Ltd.
    Inventors: Manfred Guttinger, Konrad Schermutzki
  • Patent number: 4002114
    Abstract: A dual press having hydraulic units which are controlled to regulate the pressure exerted on material being treated. A control system includes sensing means along the path of materials passing to the press and sensing means along the path of materials passing from the press. Thus, sensing means control the hydraulic units and regulate the pressure so as to maintain a predetermined maximum pressure when a continuous supply of material is passing through the press. The pressure is reduced or removed completely when the supply of material is decreased or interrupted.
    Type: Grant
    Filed: April 29, 1975
    Date of Patent: January 11, 1977
    Assignee: Sandco Ltd.
    Inventor: Manfred Guttinger
  • Patent number: 3979030
    Abstract: An apparatus for dispensing viscous, pourable substances onto belts having highly sensitive surfaces, especially for dispensing a uniformly thick layer of polymer resins onto a steel belt. Provided for this purpose is a storage box having an open bottom, in which the bottom edge of at least one of the end walls located at right angles to the direction of travel of the belt is arranged just above the surface of the belt in such a manner that it does not contact the surface of the belt. Sealing is provided by means of flows of gas or liquid, which are directed at the gap between the bottom edge of the side wall and the surface of the belt from the outside, and whose pressure retains the viscous substance in the storage box.
    Type: Grant
    Filed: October 9, 1973
    Date of Patent: September 7, 1976
    Assignee: Sandco Ltd.
    Inventor: Karl Gunnar Boman