Patents by Inventor Mattias Rehnstrom

Mattias Rehnstrom 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).

  • Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits
    Patent number: 9242336
    Abstract: Drill bit (10) for a rock drilling tool (12), and a method of increasing the toughness of the drill bit, which drill bit (10) has a drilling surface (10b) that contacts rock during drilling. A longitudinal cross section (10t) of the drill bit (10) through the drilling surface (10b) exhibits certain relationships of Ltot(depth)/Ltot(5.0) and H(depth)/H(5.0) at the specified depths, along the drill bit's longitudinal axial center line (C) if the drill bit has a length (L) of 10 mm or greater, and Ltot(depth)/Ltot(3.5) and H(depth)/H(3.5) at the specified depths, if the drill bit has a length (L) of 10 mm or less.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: January 26, 2016
    Assignee: Atlas Copco Secoroc AB
    Inventors: Jimmy Carlsson, Goran Stenberg, Mattias Rehnstrom
  • Drill bit for a rock drilling tool with increased toughness and method for increasing the toughness of such drill bits
    Patent number: 8720613
    Abstract: Drill bit (10) for a rock drilling tool (12), which drill bit (10) has a drilling surface (10b) that contacts rock during drilling. A longitudinal cross section (10t) of the drill bit (10) through the drilling surface (10b) exhibits the following relationships of Ltot(depth)/Ltot(5.0) and H(depth)/H(5.0) at the specied depths, where H(depth)/H(5.0) is measured according to a Vickers test and Ltot(depth)/Ltot(5.0) is measured according to the Palmqvist method, described in this document substantially along the drill bit's longitudinal axial center line (C): (table (I)). If the drill bit (10) has en length (L) of 10 mm or greater, and a longitudinal cross section (10t) of the drill bit (10) through the drilling surface (10b) exhibits the following relationships of Ltot(depth)/Ltot(3.5) and H(depth)/H(3.5) at the specified depths, where H(depth)/H(3.5) is measured according to a Vickers test and Ltot(depth)/Ltot(3.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: May 13, 2014
    Assignee: Atlas Copco Secoroc AB
    Inventors: Jimmy Carlsson, Göran Stenberg, Mattias Rehnström
  • Drill Bit For A Rock Drilling Tool With Increased Toughness And Method For Increasing The Toughness Of Such Drill Bits
    Publication number: 20130183887
    Abstract: Drill bit (10) for a rock drilling tool (12), and a method of increasing the toughness of the drill bit, which drill bit (10) has a drilling surface (10b) that contacts rock during drilling. A longitudinal cross section (10t) of the drill bit (10) through the drilling surface (10b) exhibits certain relationships of Ltot(depth)/Ltot(5.0) and H(depth)/H(5.0) at the specified depths, along the drill bit's longitudinal axial center line (C) if the drill bit has a length (L) of 10 mm or greater, and Ltot(depth)/Ltot(3.5) and H(depth)/H(3.5) at the specified depths, if the drill bit has a length (L) of 10 mm or less.
    Type: Application
    Filed: March 7, 2013
    Publication date: July 18, 2013
    Inventors: Jimmy Carlsson, Goran Stenberg, Mattias Rehnstrom
  • DRILL BIT FOR A ROCK DRILLING TOOL WITH INCREASED TOUGHNESS AND METHOD FOR INCREASING THE TOUGHNESS OF SUCH DRILL BITS
    Publication number: 20110000717
    Abstract: Drill bit (10) for a rock drilling tool (12), which drill bit (10) has a drilling surface (10b) that contacts rock during drilling. A longitudinal cross section (10t) of the drill bit (10) through the drilling surface (10b) exhibits the following relationships of Ltot(depth)/Ltot(5.0) and H(depth)/H(5.0) at the specied depths, where H(depth)/H(5.0) is measured according to a Vickers test and Ltot(depth)/Ltot(5.0) is measured according to the Palmqvist method, described in this document substantially along the drill bit's longitudinal axial centre line (C): (table (I)). If the drill bit (10) has en length (L) of 10 mm or greater, and a longitudinal cross section (10t) of the drill bit (10) through the drilling surface (10b) exhibits the following relationships of Ltot(depth)/Ltot(3.5) and H(depth)/H(3.5) at the specified depths, where H(depth)/H(3.5) is measured according to a Vickers test and Ltot(depth)/Ltot(3.
    Type: Application
    Filed: February 27, 2009
    Publication date: January 6, 2011
    Inventors: Jimmy Carlsson, Göran Stenberg, Mattias Rehnström