Patents by Inventor Peter Sternberger

Peter Sternberger 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).

  • Hand-held power tool with a pneumatic percussion mechanism
    Patent number: 7628221
    Abstract: A pneumatic percussion mechanism for a hand-held power tool includes a percussion piston (23) displaceable in a guide tube (21) for applying impacts to an anvil (24), a driving member (22) reciprocating in the guide tube (21) for driving the percussion piston, and an air spring (25) for transmitting a driving torque from the driving member (22) to the percussion piston (23) and directly switchable on and off by the anvil (24).
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: December 8, 2009
    Assignee: Hilti Aktiengesellscahft
    Inventors: Markus Hartmann, Stefan Dorner, Peter Sternberger
  • Hand-held power tool with a pneumatic percussion mechanism
    Publication number: 20080202782
    Abstract: A pneumatic percussion mechanism for a hand-held power tool includes a percussion piston (23) displaceable in a guide tube (21) for applying impacts to an anvil (24), a driving member (22) reciprocating in the guide tube (21) for driving the percussion piston, and an air spring (25) for transmitting a driving torque from the driving member (22) to the percussion piston (23) and directly switchable on and off by the anvil (24).
    Type: Application
    Filed: February 6, 2008
    Publication date: August 28, 2008
    Inventors: Markus Hartmann, Stefan Dorner, Peter Sternberger
  • Cup-shaped rock drill head
    Patent number: 7059432
    Abstract: A cup-shaped drill head with an inner conical surface (2) for force-locking connection with an exterior conical surface (3) of a driving drill shaft (4), which at the leading end changes over into a cup base (5) with a center point (P), whereby in the change over from the cup base (5) to the inner conical surface (2) a lesser curvature (K) is present than at the center point (P).
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: June 13, 2006
    Assignee: Hilti Aktiengesellschaft
    Inventors: Udo Hauptmann, Peter Sternberger, Reinhard Schulz, Martin Richter
  • Cup-shaped rock drill head
    Publication number: 20040079554
    Abstract: A cup-shaped drill head with an inner conical surface (2) for force-locking connection with an exterior conical surface (3) of a driving drill shaft (4), which at the leading end changes over into a cup base (5) with a center point (P), whereby in the change over from the cup base (5) to the inner conical surface (2) a lesser curvature (K) is present than at the center point (P).
    Type: Application
    Filed: October 15, 2003
    Publication date: April 29, 2004
    Inventors: Udo Hauptmann, Peter Sternberger, Reinhard Schulz, Martin Richter