Patents by Inventor Raymond D. Barta

Raymond D. Barta 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).

  • Air separation method and apparatus for pleating a plastic film web
    Patent number: 5246416
    Abstract: An apparatus and method for introducing a pleat into an advancing folded-over film web is provided which utilizes air under low pressure to separate the opposing faces of the web prior to the pleat being made. By unblocking the faces of the folded-over web, the web may be readily advanced and pleated without hang ups, misalignment, or tearing of the web. The apparatus includes a pair of substantially aligned and spaced-apart receiving plates over which opposing faces of the film web pass, a generally circular wheel positioned between the receiving plates and extending into the space therebetween for forming a pleat in the folded-over film, and an air passage positioned between the receiving plates for directing a flow of air between the opposing faces of the film web to separate the opposing faces of the web prior to passing over the receiving plates.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: September 21, 1993
    Assignee: Dowbrands L.P.
    Inventors: Michael Demura, James LaCombe, Roger A. Novak, Raymond D. Barta
  • Electrostatic pinning in a process for gusseting film web
    Patent number: 5186707
    Abstract: Disclosed is an apparatus and process for gusseting plastic film web having a means for applying an electrostatic charge of negative or positive polarity to the gusset to maintain stable gusset folds prior to storing or processing the gusseted web into a multiplicity of gusseted bags.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: February 16, 1993
    Assignee: Dowbrands L.P.
    Inventor: Raymond D. Barta
  • Air separation method and apparatus for pleating a plastic film web
    Patent number: 5147278
    Abstract: An apparatus and method for introducing a pleat into an advancing folded-over film web is provided which utilizes air under low pressure to separate the opposing faces of the web prior to the pleat being made. By unblocking the faces of the folded-over web, the web may be readily advanced and pleated without hang ups, misalignment, or tearing of the web. The apparatus includes a pair of substantially aligned and spaced-apart receiving plates over which opposing faces of the film web pass, a generally circular wheel positioned between the receiving plates and extending into the space therebetween for forming a pleat in the folded-over film, and an air passage positioned between the receiving plates for directing a flow of air between the opposing faces of the film web to separate the opposing faces of the web prior to passing over the receiving plates.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: September 15, 1992
    Assignee: DowBrands L.P.
    Inventors: Michael Demura, James LaCombe, Roger A. Novak, Raymond D. Barta
  • Electrostatic pinning in a process for gusseting film web
    Patent number: 5083999
    Abstract: Disclosed is an apparatus and process for gusseting plastic film web having a means for applying an electrostatic charge of negative or positive polarity to the gusset to maintain stable gusset folds prior to storing or processing the gusseted web into a multiplicity of gusseted bags.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: January 28, 1992
    Inventor: Raymond D. Barta