Patents by Inventor Josef Obermeier

Josef Obermeier 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: 7309195
    Abstract: A shank for a rotary and percussive tool has a locking groove (3) arranged between two guided regions (1a, 1b) and axially closed at its opposite ends for receiving at least one radially displaceable and axially displaceable, within predetermined limits, locking member (4) of a chuck in which the shank is received, with the guide dimension (F) of the guide region being smaller than the width (B) of the axial region (A) of the locking groove (3) and that includes the radial extent of an entrain strip (2) provided in that region (A), and greater than the thickness (D) of the axial region measured in a direction transverse to the width measurement direction.
    Type: Grant
    Filed: June 20, 2003
    Date of Patent: December 18, 2007
    Assignee: Hilti Aktiengesellschaft
    Inventors: Werner Kleine, Hans-Werner Bongers-Ambrosius, Josef Obermeier, Werner Britten
  • Patent number: 7096974
    Abstract: A hand-held power tool including a tool spindle (12) having a motor (6) for driving the tool spindle (12), a handle (18) having a forwardly inclined position in which the handle (18), starting from the spindle axis (W) is inclined, at least for a most part, in an operational direction (A) of the power tool (2), and an actuator (22) provided on the handle (18) for switching the motor (6) on and off.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: August 29, 2006
    Assignee: Hilti Aktiengesellschaft
    Inventors: Josef Obermeier, Thomas Hofbrucker
  • Publication number: 20050042051
    Abstract: A hand-held power tool including a tool spindle (12) having a motor (6) for driving the tool spindle (12), a handle (18) having a forwardly inclined position in which the handle (18), starting from the spindle axis (W) is inclined, at least for a most part, in an operational direction (A) of the power tool (2), and an actuator (22) provided on the handle (18) for switching the motor (6) on and off.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 24, 2005
    Inventors: Josef Obermeier, Thomas Hofbrucker
  • Publication number: 20040052596
    Abstract: A shank for a rotary and percussive tool has a locking groove (3) arranged between two guided regions (1a, 1b) and axially closed at its opposite ends for receiving at least one radially displaceable and axially displaceable, within predetermined limits, locking member (4) of a chuck in which the shank is received, with the guide dimension (F) of the guide region being smaller than the width (B) of the axial region (A) of the locking groove (3) and that includes the radial extent of an entrain strip (2) provided in that region (A), and greater than the thickness (D) of the axial region measured in a direction transverse to the width measurement direction.
    Type: Application
    Filed: June 20, 2003
    Publication date: March 18, 2004
    Inventors: Werner Kleine, Hans-Werner Bongers-Ambrosius, Josef Obermeier, Werner Britten
  • Patent number: 6620011
    Abstract: A strip-shaped screw magazine having a plurality of spaced from each other connection webs (2, 12, 22) extending between two side walls (1, 11, 21) of the magazine transverse to the longitudinal extent of the screw magazine and defining a plurality of substantially square chambers (9, 19, 29) for receiving each a screw (8, 18, 28), and a sleeve (6, 16, 26) for receiving a stem of the screw (8, 18, 28) and arranged centrally in each of the receiving chambers (9, 19, 29), the receiving sleeve (6, 16, 26) having at least two break points (5, 25) and being connected by at least two support arms (3, 13, 23) uniformly arranged on the circumference of the sleeve with the side walls and/or the connection webs.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: September 16, 2003
    Assignee: Hilti Aktingesellschaft
    Inventors: Josef Obermeier, Gerd Daubinger
  • Publication number: 20030118424
    Abstract: A strip-shaped screw magazine having a plurality of spaced from each other connection webs (2, 12, 22) extending between two side walls (1, 11, 21) of the magazine transverse to the longitudinal extent of the screw magazine and defining a plurality of substantially square chambers (9, 19, 29) for receiving each a screw (8, 18, 28), and a sleeve (6, 16, 26) for receiving a stem of the screw (8, 18, 28) and arranged centrally in each of the receiving chambers (9, 19, 29), the receiving sleeve (6, 16, 26) having at least two break points (5, 25) and being connected by at least two support arms (3, 13, 23) uniformly arranged on the circumference of the sleeve with the side walls and/or the connection webs.
    Type: Application
    Filed: December 10, 2002
    Publication date: June 26, 2003
    Inventors: Josef Obermeier, Gerd Daubinger
  • Patent number: 6571890
    Abstract: A twist drill (1) has a plurality of of protuberances (9) arranged in the grooves (6) of the helix (4) which project radially outward partially into the groove cross section to prevent clumps.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: June 3, 2003
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Patent number: 6431036
    Abstract: A screw assembly for setting screws, disposed in a strip-shaped screw magazine, is connected detachably with a screw driver, which has a basic body (7) with a control curve (8), and a guiding element (1). The screw assembly has a carriage (11), a transporting pawl (14) and a carrier (17). The guiding element (1) can be shifted counter to the force of a spring opposite to setting direction of the screw driver and has a carrier seat (3), which extends perpendicularly to the setting direction of the screw. The carriage (11) has a control element, which can interact with a control surface (8), and can be shifted against the force of a spring along the carrier seat (3). A transporting pawl (14), which can be connected positively with the screw magazine, is disposed pivotally at the carriage (11). The carrier (17) is disposed removably at the carrier seat (3) and has a transporting channel (33), which accommodates and guides the strip-shaped screw magazine.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: August 13, 2002
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Publication number: 20020035900
    Abstract: A screw assembly for setting screws, disposed in a strip-shaped screw magazine, is connected detachably with a screw driver, which has a basic body (7) with a control curve (8), and a guiding element (1). The screw assembly has a carriage (11), a transporting pawl (14) and a carrier (17). The guiding element (1) can be shifted counter to the force of a spring opposite to setting direction of the screw driver and has a carrier seat (3), which extends perpendicularly to the setting direction of the screw. The carriage (11) has a control element, which can interact with a control surface (8), and can be shifted against the force of a spring along the carrier seat (3). A transporting pawl (14), which can be connected positively with the screw magazine, is disposed pivotally at the carriage (11). The carrier (17) is disposed removably at the carrier seat (3) and has a transporting channel (33), which accommodates and guides the strip-shaped screw magazine.
    Type: Application
    Filed: September 25, 2001
    Publication date: March 28, 2002
    Inventor: Josef Obermeier
  • Publication number: 20010023783
    Abstract: A twist drill (1) has a plurality of of protuberances (9) arranged in the grooves (6) of the helix (4) which project radially outward partially into the groove cross section to prevent clumps.
    Type: Application
    Filed: March 21, 2001
    Publication date: September 27, 2001
    Inventor: Josef Obermeier
  • Patent number: 5733074
    Abstract: A manual tool for removing material from brittle and/or non-ductile stock includes a housing (1) with a drive unit (2) for a tool bit (3) located within the housing (1). The tool bit is arranged to be rotated by the drive unit (3) about the bit axis. In addition, an electro-acoustic converter (4) for producing ultrasonic vibrations and a vibration amplifier (5) are positioned within the housing for superimposing ultrasonic vibrations on the rotational action of the tool bit during operation on the manual tool.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: March 31, 1998
    Assignee: Hilti Aktiengesellschaft
    Inventors: Maximilian Stock, Josef Obermeier, Eugen Magyari, Peter Ofner
  • Patent number: 5732522
    Abstract: A device for shallow anchoring a member to a surface of a receiving material, particularly a receiving material with reinforcement close to the surface, includes a hollow cylindrically shaped anchoring member with a load engagement member connected to it for holding the member to be anchored. The anchoring member is formed of two axially extending cylindrically shaped hollow sleeves (5, 6) fitted one within the other. At least one of the sleeves has axially extending expandable slots. The sleeves are formed of an inner sleeve (5) and an outer sleeve (6) with the inner sleeve (5) having an outer diameter (a) and the outer sleeve having an inner diameter (i) with these diameters increasing towards the leading ends of the sleeves, that is, the ends inserted first into an annular bore in the receiving material.
    Type: Grant
    Filed: June 21, 1996
    Date of Patent: March 31, 1998
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Patent number: 5704744
    Abstract: An arrangement for transmitting torque from a chuck (5) in a manually operated tool to a tool bit (1) having an axially extending chuck section (2) insertible into the chuck. The chuck section (2) has axially extending entrainment faces (31) arranged to cooperate with correspondingly shaped torque transmitting faces (6) in the chuck (5). The chuck section (2) is arranged to cooperate with a device (7) in the chuck for retaining the tool bit and affording limited axial displaceability of the bit. The chuck section (2) is formed with at least one recess (4). The device (7) in the chuck includes a locking element (8) engageable in the recess. The locking element (8) is axially and radially displaceable both to a limited extent and the axial displaceability of the tool bit is possible at least in part, by the limited axial displaceability of the locking element (8).
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: January 6, 1998
    Assignee: Hilti Aktiengeschaft
    Inventors: Werner Kleine, Josef Obermeier
  • Patent number: 5542797
    Abstract: A tool for insertion into a tool bit chuck in a manually operated tool used for chiseling and/or percussion drilling includes an axially extending chucking shank (1) with a locking 1groove (2) closed at its ends spaced apart in the axial direction. The chucking shank (1) has two rotary entrainment grooves (3) each with an entrainment side flank arranged so that the entrainment side flanks are located diametrically opposite one another. One of the rotary entrainment grooves (3) extends in the axial direction through a part of another locking groove (4) in such a way that the locking of the tool bit in a chuck is improved. To increase the transmission of torque, the chucking shank (1) has at least one additional axially extending groove (5). With this groove arrangement of the chucking shank (1) the tool bit is useful with a correspondingly shaped tool bit chuck as well as with different commercially available chucks.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: August 6, 1996
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Patent number: 5529444
    Abstract: A tool bit for insertion into a tool bit chuck in a manually operated tool used for chiseling and/or percussion drilling has an axially extending chucking shank (1). The chucking shank has two axially extending rotary entrainment grooves (2) open at its end inserted into the chuck and located diametrically opposite one another. In addition, the chucking shank (1) has a locking groove (3) closed at its ends extending transversely of the axial direction and serving to lock the tool bit in the axial direction. Further, the chucking shank (1) has an axially extending groove (4) and an additional axially extending groove (5) for providing greater surface areas in entrainment side flanks for transmitting torque. The axially extending groove (4) extends through a part of the locking groove (3) so that an end face (3a) is formed extending transversely of the axial direction.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: June 25, 1996
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Patent number: 5529445
    Abstract: A tool bit for insertion into a tool bit chuck on a manually operated tool used for cutting and/or percussion drilling includes an axially extending chucking shank (1). The chucking shank has two axially extending rotary entrainment grooves (2, 3) open at a free end of the shank and located diametrically opposite one another. The transverse cross-sectional areas of the rotary entrainment grooves (2, 3) are different. A locking element displaceable into a locking groove (4) with axially displaced closed ends affords axial securement of the chucking shank in the chuck. To increase the torque to be transmitted, an axially extending groove (5) open at the free end of the shank is provided with its cross-section transverse of the axial direction corresponding at least to the transverse cross-section of the locking groove (4). Due to this arrangement, faulty locking of the chucking shank in the chuck of conventional commercially available manually-operated tools can be easily recognized by the tool operator.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: June 25, 1996
    Assignee: Hilti Aktiengesellschaft
    Inventors: Josef Obermeier, Axel Neukirchen
  • Patent number: 5520488
    Abstract: A tool bit for insertion into a tool bit chuck in a manually operated tool, used for cutting and/or percussion drilling, has an axially extending chucking shank (2) with a free end. The chucking shank (2) has two locking grooves (6, 7) located diametrically opposite one another and closed at their ends spaced apart in the axial direction. In addition, the chucking shank has two axially extending rotary entrainment grooves (8, 9) disposed diametrically opposite one another and open at the free end. The transverse cross-sectional areas of the rotary entrainment grooves (8, 9) are different. To increase the transmittable torque, an additional axially extending groove (11) open at the free end of the chucking shank extends through and is positioned asymmetrically to one of the locking grooves (7). An end shoulder face (7a) for axially securing the tool bit is formed in the end region of the locking groove located laterally outwardly from the axially extending groove (11).
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: May 28, 1996
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Patent number: 5518345
    Abstract: A tool bit for insertion into a tool bit chuck in a manually operated tool used for chiseling and/or percussion drilling includes a chucking shank (6). The chucking shank has two rotary entrainment grooves (7) located diametrically opposite one another and open at the end of the chucking shank to be inserted into the chuck. A pair of locking grooves (8) are located diametrically opposite one another. Axially extending grooves (9) overlap at least part of the pair of locking grooves (8) so that end faces (8a) are formed extending transversely of the axial projection and facing away from the end of the chucking shank to be inserted into the chuck.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: May 21, 1996
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Patent number: 5487434
    Abstract: An axially elongated rock drill has a chucking shank section (1) at one end and a drilling tip (2) at the opposite end, helically arranged first grooves (3, 4) are located in the outside surface of the drill and extend from adjacent the drilling tip towards the chucking shank section. Helically arranged lands (R) are located between the first grooves and form the outside surface of the drill. The lands have helically arranged auxiliary second grooves located between helically arranged guidance regions (7, 8, 9, 10). Accordingly, the second grooves are spaced from the first grooves by the guidance regions. The width (BH) of the first grooves (3, 4) is approximately twice the total width (BG) of the lands, that is, the width of the two guidance regions and one second groove.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: January 30, 1996
    Assignee: Hilti Aktiengesellschaft
    Inventor: Josef Obermeier
  • Patent number: 5467835
    Abstract: A drilling or chiseling tool includes a suction apparatus (8) releasably mounted on a housing (1) of the tool. The suction apparatus (8) contains a replaceable separating device (11) formed of a housing (13) subdivided into two separate chambers (K1, K2) by a filter element (14) replaceably fitted in the housing. Each chamber (K1, K2) has an aperture (12, 15) and the cross-sections of the apertures extend at right angles to one another.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: November 21, 1995
    Assignee: Hilti Aktiengesellschaft
    Inventors: Josef Obermeier, Ulrich Muller-Boysen, Siegfried Keusch, Peter Gaffal