Patents by Inventor Harald Fielitz

Harald Fielitz 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).

  • Publication number: 20070187449
    Abstract: A hand-held setting tool for driving fastening elements in a workpiece includes a muzzle member (20) axially displaceable relative to the tool housing (11) in a direction of an operational axis (A) of the setting tool (10), a feeding channel (28) for a fastening element strip (50) and arranged in the muzzle member (20) and opening into a fastening element the receiving chamber (29) provided in the muzzle member (20), and a locking member (40) arranged on the muzzle member (20) and forming a locking section (42) displaceable into the feeding channel (28), and a blocking section (41) for preventing displacement of the muzzle member relative to the housing.
    Type: Application
    Filed: January 24, 2007
    Publication date: August 16, 2007
    Inventor: Harald Fielitz
  • Patent number: 7128252
    Abstract: A setting device (10) drives fastening elements into a receiving material and includes a housing (11) with a piston guide (13) arranged in the housing (11) and with a hollow space (14) in which a setting piston (15) is displaceably mounted. A bolt guide (16) is connected to the piston guide (13) by an interface (17). The setting device further has a piston restoring device (20) with an adjusting member (21) which engages in the piston guide (13) in a work position and is moved out of the piston guide (13) into a release position (24). Further, there is a securing element (30), with the adjusting member (21) being held in the work position (23) in a first position (33) of the securing element (30) and the adjusting member (21) being released to move into the release position (24) in the second position (34) of the securing element (30).
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: October 31, 2006
    Assignee: Hilti Aktiengesellshaft
    Inventors: Stefan Boenig, Johann Buechel, Michael Weibel, Harald Fielitz
  • Publication number: 20050051595
    Abstract: A setting device (10) drives fastening elements into a receiving material and includes a housing (11) with a piston guide (13) arranged in the housing (11) and with a hollow space (14) in which a setting piston (15) is displaceably mounted. A bolt guide (16) is connected to the piston guide (13) by an interface (17). The setting device further has a piston restoring device (20) with an adjusting member (21) which engages in the piston guide (13) in a work position and is moved out of the piston guide (13) into a release position (24). Further, there is a securing element (30), with the adjusting member (21) being held in the work position (23) in a first position (33) of the securing element (30) and the adjusting member (21) being released to move into the release position (24) in the second position (34) of the securing element (30).
    Type: Application
    Filed: September 7, 2004
    Publication date: March 10, 2005
    Inventors: Stefan Boenig, Johann Buechel, Michael Weibel, Harald Fielitz
  • Publication number: 20050001005
    Abstract: A setting tool includes a housing (11), a bolt guide (12) axially displaceable relative to the housing (11), a safety sleeve (20) at least regionwise surrounding the bolt guide (12) and having at least two shell parts (21, 22) formed of tubular sections, and a clamp member (23) at least regionwise encompassing the two shell parts (21, 22) for forming the safety sleeve (20).
    Type: Application
    Filed: June 30, 2004
    Publication date: January 6, 2005
    Inventors: Harald Fielitz, Johann Buechel
  • Patent number: 6808100
    Abstract: A portable, combustion-engine setting tool for fastening elements and including a guide tube (1) for fastening elements (8), a piston rod (7) for driving fastening elements out of the guide tube (1), and a locking device for lockingly connecting the guide tube (1), with the tool base body (6) and including a locking nose (16) carried by the guide tube (1), a spring (16) for radially biasing the locking nose (16) away from the guide tube, with the locking nose (16) being manually radially displaceable toward the guide tube (1) against a biasing force of the spring (14) into a groove (22) provided in the base body (6).
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: October 26, 2004
    Assignee: Hilti Aktiengesellschaft
    Inventors: Harald Fielitz, Johann Büchel
  • Patent number: 6755335
    Abstract: A gas-operated setting tool for in fastening elements includes a combustion chamber (20), a piston displaceable in the tool guide cylinder under pressure generated as a result of the combustion of the air-fuel mixture in the combustion chamber (20), a scavenging chamber (30) adapted to be filled with scavenging air and pneumatically connected with the combustion chamber, and at least one slide member (31) for discharging the scavenging air from the scavenging chamber toward the combustion chamber.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: June 29, 2004
    Assignee: Hilti Aktiengesellschaft
    Inventor: Harald Fielitz
  • Publication number: 20030230620
    Abstract: A gas-operated setting tool for in fastening elements includes a combustion chamber (20), a piston displaceable in the tool guide cylinder under pressure generated as a result of the combustion of the air-fuel mixture in the combustion chamber (20), a scavenging chamber (30) adapted to be filled with scavenging air and pneumatically connected with the combustion chamber, and at least one slide member (31) for discharging the scavenging air from the scavenging chamber toward the combustion chamber.
    Type: Application
    Filed: June 16, 2003
    Publication date: December 18, 2003
    Inventor: Harald Fielitz
  • Publication number: 20030098328
    Abstract: A portable, combustion-engine setting tool for fastening elements and including a guide tube (1) for fastening elements (8), a piston rod (7) for driving fastening elements out of the guide tube (1), and a locking device for lockingly connecting the guide tube (1), with the tool base body (6) and including a locking nose (16) carried by the guide tube (1), a spring (16) for radially biasing the locking nose (16) away from the guide tube, with the locking nose (16) being manually radially displaceable toward the guide tube (1) against a biasing force of the spring (14) into a groove (22) provided in the base body (6).
    Type: Application
    Filed: November 12, 2002
    Publication date: May 29, 2003
    Inventors: Harald Fielitz, Johann Buchel
  • Patent number: 6378288
    Abstract: A combustion-engined tool including two opposite combustion chamber walls (14,18), and an ignition device (52) arranged between the two opposite combustion chamber walls for igniting a fuel gas mixture occupying space between the two walls, and an element located between the ignition device (52) and openings (38) formed in one of the two walls (18) for localized swirling a laminary expanding flame front formed upon ignition of the fuel gas mixture with the ignition device (52).
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: April 30, 2002
    Assignee: Hilti Aktiengesellschaft
    Inventors: Kaveh Towfighi, Harald Fielitz, Wolfgang Saxler