Patents by Inventor Kenneth Steigerwalt

Kenneth Steigerwalt 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).

  • Knife blade opening mechanism
    Patent number: 7562454
    Abstract: A folding knife incorporates an opening assist mechanism that functions to drive the blade from the closed to the open position. The knife may be either automatic or semi-automatic. In one embodiment a pair of spring arms, one located to each lateral side of the blade is interconnected at their forward ends with a pin and a roller sleeve. The spring arms apply pressure to the tang of the blade when the blade is closed.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: July 21, 2009
    Assignee: Mentor Group, L.L.C.
    Inventors: Kenneth Steigerwalt, Matthew Lerch
  • Folding tool with lock
    Patent number: 7533466
    Abstract: A hand tool such as a fillet knife or limb saw with a blade that is longer than the handle has a blade guard arm that shields the blade when in the closed position. The blade guard arm is longitudinally slidable in the tool handle and engages the blade tang when the blade is in the open position, thereby locking the blade open.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: May 19, 2009
    Assignee: Mentor Group, L.L.C.
    Inventor: Kenneth Steigerwalt
  • Folding tool with blade locking mechanism
    Patent number: 7409766
    Abstract: A hand tool such as a multi-bladed folding knife incorporates a lock back mechanism t hat is interconnected with springs extending parallel to the knife body and with pins that interconnect the springs. The springs apply biasing force via the pins to the lock back mechanism associated with the primary blade, and also on secondary blades if used.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: August 12, 2008
    Assignee: Mentor Group LLC
    Inventor: Kenneth Steigerwalt
  • Knife blade opening mechanism
    Publication number: 20080083118
    Abstract: A folding knife incorporates an opening assist mechanism that functions to drive the blade from the closed to the open position. The knife may be either automatic or semi-automatic. In one embodiment a pair of spring arms, one located to each lateral side of the blade is interconnected at their forward ends with a pin and a roller sleeve. The spring arms apply pressure to the tang of the blade when the blade is closed.
    Type: Application
    Filed: November 9, 2007
    Publication date: April 10, 2008
    Inventors: Kenneth Steigerwalt, Matthew Lerch
  • Knife blade opening mechanism
    Patent number: 7293360
    Abstract: A folding knife incorporates an opening assist mechanism that functions to drive the blade from the closed to the open position. The knife may be either automatic or semi-automatic. In one embodiment a pair of spring arms, one located to each lateral side of the blade is interconnected at their forward ends with a pin and a roller sleeve. The spring arms apply pressure to the tang of the blade when the blade is closed.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 13, 2007
    Assignee: Mentor Group, LLC
    Inventors: Kenneth Steigerwalt, Matthew Lerch
  • Folding tool with lockback mechanism
    Publication number: 20070169351
    Abstract: A hand tool such as a folding knife incorporates a lockback mechanism that is sprung with spring arms extending parallel to the knife body. The spring arms apply biasing force to the lockback mechanism.
    Type: Application
    Filed: January 25, 2006
    Publication date: July 26, 2007
    Inventor: Kenneth Steigerwalt
  • Folding tool with lock
    Publication number: 20070068001
    Abstract: A hand tool such as a fillet knife or limb saw with a blade that is longer than the handle has a blade guard arm that shields the blade when in the closed position. The blade guard arm is longitudinally slidable in the tool handle and engages the blade tang when the blade is in the open position, thereby locking the blade open.
    Type: Application
    Filed: September 29, 2005
    Publication date: March 29, 2007
    Inventor: Kenneth Steigerwalt
  • Knief blade opening mechanism
    Publication number: 20060230620
    Abstract: A folding knife incorporates an opening assist mechanism that functions to drive the blade from the closed to the open position. The knife may be either automatic or semi-automatic. In one embodiment a pair of spring arms, one located to each lateral side of the blade is interconnected at their forward ends with a pin and a roller sleeve. The spring arms apply pressure to the tang of the blade when the blade is closed.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 19, 2006
    Inventors: Kenneth Steigerwalt, Matthew Lerch
  • Folding tool with blade locking mechanism
    Publication number: 20060005397
    Abstract: A hand tool such as a multi-bladed folding knife incorporates a lock back mechanism that is interconnected with springs extending parallel to the knife body. The springs apply biasing force to the lock back mechanism associated with the primary blade, and also on secondary blades if used.
    Type: Application
    Filed: July 1, 2005
    Publication date: January 12, 2006
    Inventor: Kenneth Steigerwalt