Patents by Inventor Lawrence W. Caldwell

Lawrence W. Caldwell 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: 5486152
    Abstract: A plough for closing carton flaps, particularly major carton flaps and a process for making the plough. The plough is designed to cause the flaps to close at or near constant velocity so as to minimize disruptions on the manufacturing line. The plough is prepared by generating data describing the coordinates of a flap as it closes at or near constant velocity, using the data to generate additional data describing the contour of a plough necessary to close the flap at or near constant velocity, and causing the plough to be fabricated utilizing the contour data.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: January 23, 1996
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Daniel J. Heinz, Gregory A. Lathrop, Lawrence W. Caldwell, Pasquale Buzzeo
  • Patent number: 5344279
    Abstract: An improved magazine particularly useful for stacking concentrated or superconcentrated detergent cartons and a process for erecting such cartons and other stackable items. Manufacturing problems resulting from the presence of the handle in high density powder cartons can be reduced by use of a magazine or chute having curved side walls, which accommodate the fanning which normally occurs when the cartons are stacked. Flat tubular carton blanks are inserted, preferably horizontally, into a first carton opening in the magazine and travel therethrough to a second, preferably vertical opening in the magazine, where they emerge. The shape of the magazine accommodates the uneven stacking of the cartons which tends to occur because of the extra localized thickness contributed by the carton handle and the rivets. A case turner is provided for feeding cases of cartons into the magazine.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: September 6, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Dean L. Ashbaugh, Daniel J. Heinz, Pasquale M. Buzzeo, Lawrence W. Caldwell
  • Patent number: 5310057
    Abstract: A carton for housing sheets, particularly dryer sheets. The dryer sheets are preferably stacked in a "C" shape and are removed via an access flap which may include 2 hinges and may be reclosable. The ratio of the length of the horizontal axis of the access flap is preferably of a defined ratio to the width of the sheet.
    Type: Grant
    Filed: December 10, 1991
    Date of Patent: May 10, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Lawrence W. Caldwell, Kara Sturdy
  • Patent number: 5305881
    Abstract: A carton for housing sheets, particularly dryer sheets. The dryer sheets are preferably stacked in a "U" shape and are removed via an access flap which may include 2 hinges and may be reclosable. The ratio of the length of the horizontal axis of the access flap is preferably of a defined ratio to the width of the sheet.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: April 26, 1994
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Lawrence W. Caldwell, James M. Kittle, Jr., James Stone, Kara Sturdy, Kenneth Zylka