Patents by Inventor Valentin Keller

Valentin Keller 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).

  • Patent number: 9272398
    Abstract: A hand machine tool includes a tool retainer that retains a tool, a motor that drives the tool retainer in a rotary motion, and a torque-controlled sliding clutch that is connected in a drivetrain between the motor and the tool retainer. The sliding clutch includes a first clutch disk, a second clutch disk, a spring and a controlling unit which can be activated manually. The second clutch disk is arranged displaceably alongside an axis limited by a stop in the direction toward the first clutch disk. Force is applied to the second clutch disk by the spring alongside the axis in the direction toward the first clutch disk. The manually activated controlling unit variably sets an axial distance between the first clutch disk and the stop, with which an engagement depth of the first clutch disk with the second clutch disk can be defined.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: March 1, 2016
    Assignee: HILTI AKTIENGESELLSCHAFT
    Inventors: Valentin Keller, Manfred Ludwig, Konstantin Baxivanelis, Michael Weber, Bastian Roll
  • Patent number: 8714282
    Abstract: A hand-held power tool is disclosed. The power tool has a tool receptacle for holding a tool along an axis. A housing has a grip area for a first hand. The grip area has a support section for the thumb and index finger in a plane with the axis and a shaft section for gripping around on one side of the plane. A contact surface for a second hand, which is arranged facing away from the tool receptacle and on another side of the plane, is inclined between 80 degrees and 100 degrees to the plane.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: May 6, 2014
    Assignee: Hilti Aktiengesellschaft
    Inventors: Ross Chen, Rony Meier, Tobias Grieger, Valentin Keller, Bastian Roll
  • Publication number: 20130048460
    Abstract: A hand machine tool includes a tool retainer that retains a tool, a motor that drives the tool retainer in a rotary motion, and a torque-controlled sliding clutch that is connected in a drivetrain between the motor and the tool retainer. The sliding clutch includes a first clutch disk, a second clutch disk, a spring and a controlling unit which can be activated manually. The second clutch disk is arranged displaceably alongside an axis limited by a stop in the direction toward the first clutch disk. Force is applied to the second clutch disk by the spring alongside the axis in the direction toward the first clutch disk. The manually activated controlling unit variably sets an axial distance between the first clutch disk and the stop, with which an engagement depth of the first clutch disk with the second clutch disk can be defined.
    Type: Application
    Filed: August 13, 2012
    Publication date: February 28, 2013
    Inventors: Valentin Keller, Manfred Ludwig, Konstantin Baxivanelis, Michael Weber, Bastian Roll
  • Publication number: 20110297409
    Abstract: A hand-held power tool is disclosed. The power tool has a tool receptacle for holding a tool along an axis. A housing has a grip area for a first hand. The grip area has a support section for the thumb and index finger in a plane with the axis and a shaft section for gripping around on one side of the plane. A contact surface for a second hand, which is arranged facing away from the tool receptacle and on another side of the plane, is inclined between 80 degrees and 100 degrees to the plane.
    Type: Application
    Filed: March 7, 2011
    Publication date: December 8, 2011
    Applicant: Hilti Aktiengesellschaft
    Inventors: Ross CHEN, Rony MEIER, Tobias GRIEGER, Valentin KELLER, Bastian ROLL
  • Publication number: 20090133889
    Abstract: A hand-held power tool includes a locking flange (2), and an auxiliary handle (1) securable to the locking flange (2) and having a head (4), a loop-shaped clamping band (5) located in the head (4), at least one, radially inwardly projecting cam (11a, 11b) provided on the clamping band (5) and formlockingly engageable in an associated recess (12a, 12b) formed in the locking flange (2), and a member for manually tensioning the clamping band (5).
    Type: Application
    Filed: November 10, 2008
    Publication date: May 28, 2009
    Inventors: Valentin Keller, Pascal Schilling, Manfred Ludwig, Thomas Hofbrucker
  • Patent number: 7229301
    Abstract: A motor-switch arrangement for a hand-held power tool includes a drive motor (12), an actuating switch (20) with a contact plug (24), and an adapter (44) arranged between the contact plug (24) and the drive motor (12) and having a plug connecter (46) cooperating with the counter-plug contact element (28) of the drive motor (12) for establishing a first electrical plug connection (30a) of the adapter (44), and a counter-plug connecter (48) electrically connected with the plug connecter (46) and cooperating with a plug contact element (26) of the contact plug (24) for establishing a second electrical plug connection (30b) of the adapter (44).
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: June 12, 2007
    Assignee: Hilti Aktiengesellschaft
    Inventors: Rory Britz, Thomas Hofbrucker, Rainer Ontl, Valentin Keller
  • Publication number: 20060237207
    Abstract: A motor-switch arrangement for a hand-held power tool includes a drive motor (12), an actuating switch (20) with a contact plug (24), and an adapter (44) arranged between the contact plug (24) and the drive motor (12) and having a plug connecter (46) cooperating with the counter-plug contact element (28) of the drive motor (12) for establishing a first electrical plug connection (30a) of the adapter (44), and a counter-plug connecter (48) electrically connected with the plug connecter (46) and cooperating with a plug contact element (26) of the contact plug (24) for establishing a second electrical plug connection (30b) of the adapter (44).
    Type: Application
    Filed: March 15, 2006
    Publication date: October 26, 2006
    Inventors: Rory Britz, Thomas Hofbrucker, Rainer Ontl, Valentin Keller