And Reversible Patents (Class 198/665)
  • Patent number: 5279501
    Abstract: A screw conveyor in which mixing and flow-directing paddles are selectively adjustable for use on a wide variety of materials having dissimilar flow characteristics. The adjustable paddles are advantageously applied to a screw, or auger, conveyor of an asphalt paving machine to convey a sufficient amount of unsegregated paving material beneath a center drive case or other problem distribution area.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: January 18, 1994
    Assignee: Caterpillar Paving Products Inc.
    Inventor: Harold A. Shelley
  • Patent number: 4987721
    Abstract: Cups or lids for packaging foodstuffs and the like in a sterile environment are sterilized in the packaging machine by passing them through a sterilizing chamber to be contacted first by the hydrogen peroxide and then by hot air. The packaging elements are initially moved apart rapidly and are than brought toward one another without contact, periodically in the sterilizing chamber to improve the contact of the sterilizing and drying fluid with the surfaces.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: January 29, 1991
    Assignee: Gasti Verpackungsmaschinen GmbH
    Inventor: Alfons Turtschan
  • Patent number: 4625859
    Abstract: A screw feeder with a reversibly rotating axle (14) for feeding material in a definite direction. The axle (14) is provided with feed elements (21,25) having two feeding flanks, each formed as a portion of a right-hand and, respectively, left-hand thread screw. The feed elements (21,25) preferably are attached on annular members (20,24), which are arranged one after the other along the axle (14). Each feed element (21,25) is rotatable about the axle (14) through a definite angle in relation to adjacent feed elements, so that the feed direction is maintained irrespective of the rotation direction of the axle (14). At least one of the feed elements being operably coupled to the axle for rotation therewith.
    Type: Grant
    Filed: November 27, 1984
    Date of Patent: December 2, 1986
    Assignee: Sunds Defibrator Aktiebolag
    Inventor: Axel H. Sjobom
  • Patent number: 4326673
    Abstract: An aggregate distributor on the rear of a truck dump box including an elongate housing extending transversely across the end of the truck and having a multiplicity of discharge ports through which the aggregate is dropped onto spinners swingably suspended from the distributor housing, a square tubular rotary shaft in the housing carrying conveying, mixing and agitating vanes which are rotationally adjustable on the shaft to cause aggregate to be propelled along the shaft in various directions, in accordance with the discharge ports that are open.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: April 27, 1982
    Inventor: Anthony A. Thene