Patents by Inventor Sigurdur S. Witt

Sigurdur S. Witt 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).

  • Dispenser with low-material sensing system
    Patent number: 8807475
    Abstract: Apparatus, systems and methods for dispensing sheet material from a roll which include a low-material sensing system. The low-material sensing system provides an indication when the sheet material approaches depletion or is depleted so that the depleted sheet material roll can be replaced with a full roll. The low-material sensing system determines that the sheet material is depleted or near depletion by comparing the rotational speed of a sheet material roll from which the sheet material is unwound with the speed of the motor which produces movement of the sheet material roll when power is supplied to the motor. The sheet material roll speed increases as material is unwound while the motor speed remains relatively constant. A low-material indication is provided when the comparison reaches a threshold representative of the low-material state.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: August 19, 2014
    Assignee: Alwin Manufacturing Co., Inc.
    Inventors: James A. Rodrian, Sigurdur S. Witt
  • Dispenser with Low-Material Sensing System
    Publication number: 20110114782
    Abstract: Apparatus, systems and methods for dispensing sheet material from a roll which include a low-material sensing system. The low-material sensing system provides an indication when the sheet material approaches depletion or is depleted so that the depleted sheet material roll can be replaced with a full roll. The low-material sensing system determines that the sheet material is depleted or near depletion by comparing the rotational speed of a sheet material roll from which the sheet material is unwound with the speed of the motor which produces movement of the sheet material roll when power is supplied to the motor. The sheet material roll speed increases as material is unwound while the motor speed remains relatively constant. A low-material indication is provided when the comparison reaches a threshold representative of the low-material state.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 19, 2011
    Applicant: ALWIN MANUFACTURING CO., INC.
    Inventors: James A. Rodrian, Sigurdur S. Witt
  • Method and apparatus for controlling a dispenser to conserve towel dispensed therefrom
    Patent number: 7594622
    Abstract: Towel dispensing methods and automatic towel dispensers permitting conservation of the overall amount of towel dispensed. The towel dispensing methods and towel dispensers limit the amount of towel dispensed in dispense cycles which occur shortly after an initial dispense cycle. The user is provided with sufficient towel to meet the user's needs while reducing overall towel usage and limiting towel waste.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: September 29, 2009
    Assignee: Alwin Manufacturing Co., Inc.
    Inventors: Sigurdur S. Witt, James A. Rodrian