Patents by Inventor David M. Lutgring

David M. Lutgring 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).

  • Water resistant acoustic port in ear-mouthed hearing device
    Patent number: 9636259
    Abstract: Water resistant acoustic ports and electronic hearing protection devices incorporating such ports are described. More specifically, water proof acoustic ports that provide water protection for an internal sealed chamber by providing acoustically transparent inlets that are capable of withstanding external water pressure at given depth due to their volume relation to that of the internal chamber, as well as hearing protection devices incorporating such ports, are described.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: May 2, 2017
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Paul D. Henry, David M. Lutgring, David A. Hotvet
  • WATER RESISTANT ACOUSTIC PORT IN EAR-MOUNTED HEARING DEVICE
    Publication number: 20160030246
    Abstract: Water resistant acoustic ports and electronic hearing protection devices incorporating such ports are described. More specifically, water proof acoustic ports that provide water protection for an internal sealed chamber by providing acoustically transparent inlets that are capable of withstanding external water pressure at given depth due to their volume relation to that of the internal chamber, as well as hearing protection devices incorporating such ports, are described.
    Type: Application
    Filed: July 14, 2015
    Publication date: February 4, 2016
    Inventors: Paul D. Henry, David M. Lutgring, David A. Hotvet
  • Switch system having a button travel limit feature
    Patent number: 8404990
    Abstract: A switch system having a user-activatable button and button travel limit feature is disclosed. The switch system includes a housing comprising an opening, a circuit board assembly positioned in the housing, and an electrical switch assembly connected to the circuit board. The button travel limit feature is adapted to inhibit motion of an activation surface of the user-activatable button towards the electrical switch assembly when the electrical switch assembly is activated.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: March 26, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: David M. Lutgring, Michael J. Pescetto
  • SWITCH SYSTEM HAVING A BUTTON TRAVEL LIMIT FEATURE
    Publication number: 20120000760
    Abstract: A switch system having a user-activatable button and button travel limit feature is disclosed. The switch system includes a housing comprising an opening, a circuit board assembly positioned in the housing, and an electrical switch assembly connected to the circuit board. The button travel limit feature is adapted to inhibit motion of an activation surface of the user-activatable button towards the electrical switch assembly when the electrical switch assembly is activated.
    Type: Application
    Filed: June 30, 2010
    Publication date: January 5, 2012
    Inventors: David M. Lutgring, Michael J. Pescetto
  • Ear bud body shape
    Patent number: D632677
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: February 15, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: James D. Brown, Paul D. Henry, David M. Lutgring, Michael J. Pescetto, Ravi Thomas
  • Ear bud shaft and taper
    Patent number: D632678
    Type: Grant
    Filed: April 2, 2010
    Date of Patent: February 15, 2011
    Assignee: 3M Innovative Properties Company
    Inventors: James D. Brown, Paul D. Henry, David M. Lutgring, Michael J. Pescetto, Ravi Thomas
  • Portable charging storage case
    Patent number: D738112
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: September 8, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: David M. Lutgring, Michael J. Pescetto, Mark A. Yoder