Patents by Inventor Violet M. Hanson

Violet M. Hanson 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).

  • Convertible footwear
    Patent number: 5381610
    Abstract: Footwear having a pair of slipper or footwear/shoe members joined together. Each member is formed of a flexible upper body and a sole secured thereto about the perimeter. The two slipper or footwear/shoe members are further joined with their soles abutting each other.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: January 17, 1995
    Inventor: Violet M. Hanson
  • Method and apparatus for the automatic manufacture of flat bottom bags
    Patent number: 4892511
    Abstract: A method and apparatus for the automatic manufacture of flat bottom bags from a substantially continuous supply of a sealable material whereby the material is formed as a bag having a reinforced sealed flat bottom formed by an interior bag forming assembly that is cooperable with a relatively movable folder assembly that folds the bottom of the bag and removes it from the bag former assembly after a length of the bag is severed from the remainder of the material.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: January 9, 1990
    Assignee: Violet M. Hanson
    Inventors: Robert A. Luciano, Lawrence W. Luciano, Don H. Rowe, Violet M. Hanson
  • Machine and method for manufacturing square or flat bottom bags having movable positions or stations including the use of a mandrel
    Patent number: 4230030
    Abstract: A method and apparatus for the rapid and continuous formation of reinforced flat bottom bags from a substantially endless roll of gussetted tubing.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: October 28, 1980
    Assignee: Violet M. Hanson
    Inventors: Violet M. Hanson, Edgar Strecker
  • Apparatus for forming flat bottom plastic bags
    Patent number: 3988970
    Abstract: Flat bottom bags are formed from a supply of substantially endless plastic tubing, gusseted along two sides to form a flat reel. A sleeve of predetermined length is withdrawn from the reel and allowed to hang along a vertical plane between two foraminous plenum chambers which are then moved toward each other to squeeze the length therebetween. Simultaneously a sealing and shearing mechanism forms a transverse seal and cuts the sleeve length from the reel, the gussets being at the same time sealed in the seam. The plenum chambers are then subject to vacuum and are moved apart, causing the sides of the now formed bag to separate opening the same. Upon opening of the bag, a forming mandrel is inserted therein and moved through the length of the bag until it reaches the sealed end. Simultaneously a presser member is moved across the outside surface of the bag folding over the seam, and pressing the gusset portions into flat flaps and in addition forming simultaneously the flat bottom to the bag.
    Type: Grant
    Filed: July 31, 1975
    Date of Patent: November 2, 1976
    Assignee: Violet M. Hanson
    Inventors: Violet M. Hanson, John E. Finn
  • Flat bottom bag
    Patent number: 3970241
    Abstract: The invention relates to a flat bottom plastic bag and to methods of forming the same in which the bag is provided with an initial closed bottom that is further sealed between the bottom and the sides to produce a double-sealed, double-thickness closure.
    Type: Grant
    Filed: July 31, 1975
    Date of Patent: July 20, 1976
    Inventor: Violet M. Hanson