Patents by Inventor Larry C. Dahlby

Larry C. Dahlby has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4854454
    Abstract: The present invention is an apparatus for segregating desired articles of predetermined dimensions from a jumbled flow of such articles and unwanted pieces longer than the predetermined dimensions. The apparatus includes structure, tilted relative to the horizontal, that restricts the jumbled flow to a fixed-flow space whereby the jumbled flow is caused to flow along a flow path. The apparatus comprises a three-dimensional array of rotatable pickup fingers substantially filling the fixed-flow space and extending therebeyond. The apparatus includes a biasing element that co-acts with the rotatable pickup fingers to retain an unwanted piece removed from the jumbled flow by the pickup fingers.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: August 8, 1989
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: Larry C. Dahlby
  • Patent number: 4752009
    Abstract: The present invention is an apparatus for segregating desired parts of predetermined dimension from a jumbled flow of such parts and by-product runners. The apparatus includes structure that defines a path for restricting the jumbled flow to a fixed-flow space along a flow length. The apparatus comprises a three-dimensional array of rotatable pickup fingers substantially filling the fixed-flow space and extending therebeyond. The apparatus further includes a suitable device for continuously moving successive distal portions of the rotatable finger array out of and into the fixed-flow space. The rotatable fingers are spaced apart by distances greater than the predetermined dimensions of the desired parts but less than the longest dimension of the runners, for capturing the runners while allowing the desired parts to pass through the pick-finger array.
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: June 21, 1988
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: Larry C. Dahlby
  • Patent number: 4676380
    Abstract: An improved device and method for segregating molded parts and runners flowing from a molding operation is disclosed. The device includes a restricted flow space, an array of fingers filling the space and movable therein to capture and lift runners away from the space, and strippers removing the runners to a lateral position. Prefered embodiments include a cylindrical chute and a rotating array.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: June 30, 1987
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: Larry C. Dahlby
  • Patent number: RE32823
    Abstract: An improved device and method for segregating molded parts and runners flowing from a molding operation is disclosed. The device includes a restricted flow space, an array of fingers filling the space and movable therein to capture and lift runners away from the space, and strippers removing the runners to a lateral position. Preferred embodiments include a cylindrical chute and a rotating array.
    Type: Grant
    Filed: January 27, 1988
    Date of Patent: January 10, 1989
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: Larry C. Dahlby