Patents by Inventor David Robert Gruber

David Robert Gruber 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: 6733608
    Abstract: A method for processing high bulk tissue webs is disclosed for forming a wet web, drying the web, winding the dried web to form a plurality of parent rolls, unwinding the parent rolls by transmitting torque through the roll center and/or ends, moving the partially unwound roll to effect splicing with a subsequent parent roll, and rewinding the thus united web. In particular embodiments, the torque transmitting means comprise side clamping mechanisms that engage only the end surfaces of the parent rolls. In other embodiments, an automated off-line method for splicing tissue webs from different parent rolls utilizes a finishing unit that substantially continuously impacts each web during unwinding to splice the webs together.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: May 11, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Leo Baggot, Michael Earl Daniels, Ronald Frederick Gropp, David Robert Gruber, Paul Kerner Pauling, James Monroe Perkins, James B. Ba Dour, Jr., Larry E. Birnbaum, Rudolph S. Fortuna
  • Patent number: 6440268
    Abstract: A partially unwound roll is moved for splicing with a subsequent parent roll, and the united web is rewound. The torque transmitting means include side clamping mechanisms engaging only the end surfaces of the parent rolls. In one aspect, an automated off-line apparatus and method splice tissue webs from different parent rolls in a finishing unit, and substantially continuous impacts on each web during unwinding splice the webs together. In one aspect, an apparatus and method are disclosed for the production of a soft, high bulk uncreped throughdried tissue web by depositing an aqueous suspension of papermaking fibers onto an endless forming fabric to form a web and through drying the web to final dryness without any significant differential compression to form a dried web having a bulk value of about 15 to 25 cubic centimeters per gram or greater, an MD Stiffness Factor of 50 to 100 kilograms, a machine direction stretch of 15 to 25 percent, and a substantially uniform density.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: August 27, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Leo Baggot, Michael Earl Daniels, David Robert Gruber, Paul Kerner Pauling, James D. Ba Dour, Jr., Larry E. Birnbaum, Rudolph S. Fortuna
  • Patent number: 6355139
    Abstract: A high bulk tissue web is made by depositing an aqueous suspension of papermaking fibers onto a forming fabric to form a web, drying the web, winding the dried web to form a plurality of large diameter parent rolls wound on a core, and transporting the parent rolls to an unwind stand having torque transmitting clamping means for engaging opposite end surfaces of the parent rolls. A backing plate is connected to and rotatable with an unwind shaft connected to an electric drive. An inflatable bladder is mounted on the backing plate. The clamping means engage a first parent roll by inflating the bladder such that the opposite end surfaces of the roll are sandwiched between the side clamping mechanisms for partially unwinding the first parent roll using a variable speed drive operably associated with the clamping means.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: March 12, 2002
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Leo Baggot, Michael Earl Daniels, David Robert Gruber, Paul Kerner Pauling, James D. Ba Dour, Jr., Larry E. Birnbaum, Rudolph S. Fortuna
  • Patent number: 6030496
    Abstract: A method of making a tissue web is disclosed for forming a wet web, drying the web, winding the dried web to form a plurality of parent rolls, unwinding the parent rolls using center drive unwind means, moving the partially unwound roll to effect splicing with a subsequent parent roll, and rewinding the thus united web. In one aspect, a method of making a tissue web is disclosed for the production of a soft, high bulk uncreped throughdried tissue web by depositing an aqueous suspension of papermaking fibers onto an endless forming fabric to form a web and drying the web by throughdrying to final dryness without any significant differential compression to form a dried web having a bulk value of about 15 to 25 cubic centimeters per gram or greater, an MD Stiffness Factor of 50 to 100 kilograms, a machine direction stretch of 15 to 25 cubic percent, and a substantially uniform density.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: February 29, 2000
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Leo Baggot, Michael Earl Daniels, David Robert Gruber, Paul Kerner Pauling, James D. Ba Dour, Jr., Larry E. Birnbaum, Rudolph S. Fortuna
  • Patent number: 5779965
    Abstract: The crispness or clarity of embossed tissue is improved by embossing the tissue twice in two successive embossing nips formed between a rigid engraved embossing roll and a resilient backing roll. The hardness of the resilient backing roll in the first embossing nip is less than the hardness of the resilient backing roll in the second embossing nip. This form of double nip embossing is particularly effective for embossing tissue webs having high bulk and resiliency, such as soft uncreped throughdried tissues, which cannot be satisfactorily embossed by conventional methods.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: July 14, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Paul Douglas Beuther, Tammy Lynn Baum, Anthony Mark Gambaro, David Robert Gruber, Jeffrey Dean Lindsay