Patents by Inventor Ingvar Sundell

Ingvar Sundell 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).

  • Automatic darkening filter apparatus and method
    Patent number: 8537294
    Abstract: Herein is disclosed an automatic darkening filter apparatus comprising a shutter control system configured to cause a shutter to switch from a dark state to an intermediate state in response to a change from high intensity incident light to low intensity incident light being detected. The control system is further configured to maintain the shutter in the intermediate state for a period of time, unless during this period of time high intensity light is detected, in which case the control system causes the shutter to switch to the dark state. If, at the end of the period of time, high intensity light is not detected, the shutter is caused to switch from the intermediate state to a light state.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: September 17, 2013
    Assignee: 3M Innovative Properties Company
    Inventor: Ingvar Sundell
  • Automatic darkening filter apparatus and method
    Patent number: 8384855
    Abstract: Herein is disclosed an automatic darkening filter apparatus comprising a shutter control system configured to cause a shutter to switch from a dark state to an intermediate state in response to a change from high intensity incident light to low intensity incident light being detected. The control system is further configured to maintain the shutter in the intermediate state for a period of time, unless during this period of time high intensity light is detected, in which case the control system causes the shutter to switch to the dark state. If, at the end of the period of time, high intensity light is not detected, the shutter is caused to switch from the intermediate state to a light state.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: February 26, 2013
    Assignee: 3M Innovative Properties Company
    Inventor: Ingvar Sundell
  • AUTOMATIC DARKENING FILTER WITH AUTOMATIC POWER MANAGEMENT
    Publication number: 20120057240
    Abstract: A protective automatic darkening filter (ADF) includes automatic power management capabilities. The ADF includes a power management control unit that controls power to the ADF based on whether or not the ADF is currently in use. In one embodiment, to determine whether the ADF is in use, the power management control unit includes a motion sensor that senses movement of the ADF and controls power to the ADF based on the sensed movement.
    Type: Application
    Filed: September 14, 2011
    Publication date: March 8, 2012
    Inventor: Ingvar Sundell
  • Automatic darkening filter with automatic power management
    Patent number: 8042958
    Abstract: A protective automatic darkening filter (ADF) includes automatic power management capabilities. The ADF includes a power management control unit that controls power to the ADF based on whether or not the ADF is currently in use. In one embodiment, to determine whether the ADF is in use, the power management control unit includes a motion sensor that senses movement of the ADF and controls power to the ADF based on the sensed movement.
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: October 25, 2011
    Assignee: 3M Innovative Properties Company
    Inventor: Ingvar Sundell
  • AUTOMATIC DARKENING FILTER APPARATUS AND METHOD
    Publication number: 20100265421
    Abstract: Herein is disclosed an automatic darkening filter apparatus comprising a shutter control system configured to cause a shutter to switch from a dark state to an intermediate state in response to a change from high intensity incident light to low intensity incident light being detected. The control system is further configured to maintain the shutter in the intermediate state for a period of time, unless during this period of time high intensity light is detected, in which case the control system causes the shutter to switch to the dark state. If, at the end of the period of time, high intensity light is not detected, the shutter is caused to switch from the intermediate state to a light state.
    Type: Application
    Filed: September 3, 2008
    Publication date: October 21, 2010
    Inventor: Ingvar Sundell
  • AUTOMATIC DARKENING FILTER WITH AUTOMATIC POWER MANAGEMENT
    Publication number: 20100053541
    Abstract: A protective automatic darkening filter (ADF) includes automatic power management capabilities. The ADF includes a power management control unit that controls power to the ADF based on whether or not the ADF is currently in use. In one embodiment, to determine whether the ADF is in use, the power management control unit includes a motion sensor that senses movement of the ADF and controls power to the ADF based on the sensed movement.
    Type: Application
    Filed: November 9, 2009
    Publication date: March 4, 2010
    Inventor: Ingvar Sundell
  • Automatic darkening filter with automatic power management
    Publication number: 20060285330
    Abstract: A protective automatic darkening filter (ADF) includes automatic power management capabilities. The ADF includes a power management control unit that controls power to the ADF based on whether or not the ADF is currently in use. In one embodiment, to determine whether the ADF is in use, the power management control unit includes a motion sensor that senses movement of the ADF and controls power to the ADF based on the sensed movement.
    Type: Application
    Filed: June 20, 2005
    Publication date: December 21, 2006
    Inventor: Ingvar Sundell