Patents by Inventor Reinhard Riedl
Reinhard Riedl 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).
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Patent number: 8975800Abstract: A rotor (100) for an electric motor (1000). The rotor (100) has a rotor shaft (10) and a rotor core (20) attached onto the rotor shaft (10). The rotor core has a plurality of core laminations (40, 140) arranged along an axis (A) of the rotor core (20), and has a plurality of poles of at least one pole pair, the core lamination (40, 140) having: a central recess (70, 170) through which the rotor shaft (10) passes and which has a contour (71, 171) as well as adjacent areas (AF), and a plurality of receiving structures arranged at peripheral angular positions in order to each form a receiving element for a pole-forming element on the rotor core (20).Type: GrantFiled: July 14, 2011Date of Patent: March 10, 2015Assignee: Hilti AktiengesellschaftInventors: Reinhard Riedl, Jochen Erhardt
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Publication number: 20140326776Abstract: According to one aspect of the application, an apparatus for driving a fixing element into a substrate having an energy transfer element to transfer energy to the fixing element. Preferably, the energy transfer element is movable between a starting position and a set position, whereby the energy transfer element is in the starting position before the driving-in operation and in the set position after the driving-in operation. According to a further aspect of the application, the apparatus has a mechanical energy storage device to store mechanical energy. It is then preferred for the energy transfer element to transfer energy from the mechanical energy storage device to the fixing element.Type: ApplicationFiled: November 7, 2012Publication date: November 6, 2014Inventors: Reinhard Riedl, Joerg Stamm, Ulrich Schiestl
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Patent number: 8251782Abstract: An angle grinder for driving a cutting or grinding tool (12), includes a housing (11) having a first housing section (14) extending along a first axis (A1), and in which a motor (18) is arranged, and a second housing section (15) extending along a second axis (A2) and in which an accumulator receptacle is arranged, with the first and second axes (A1, A2) extending at an angle (?) to each other; and with a handle (20) having its first end (21) secured to the first housing section (14) and its second end (22) secured to the second housing section (15).Type: GrantFiled: September 30, 2009Date of Patent: August 28, 2012Assignee: Hilti AktiengesellschaftInventors: Reinhard Riedl, Christian Koschel
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Publication number: 20120014823Abstract: A rotor (100) for an electric motor (1000). The rotor (100) has a rotor shaft (10) and a rotor core (20) attached onto the rotor shaft (10). The rotor core has a plurality of core laminations (40, 140) arranged along an axis (A) of the rotor core (20), and has a plurality of poles of at least one pole pair, the core lamination (40, 140) having: a central recess (70, 170) through which the rotor shaft (10) passes and which has a contour (71, 171) as well as adjacent areas (AF), and a plurality of receiving structures arranged at peripheral angular positions in order to each form a receiving element for a pole-forming element on the rotor core (20).Type: ApplicationFiled: July 14, 2011Publication date: January 19, 2012Applicant: Hilti AktiengesellschaftInventors: Reinhard Riedl, Jochen Erhardt
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Patent number: 7808147Abstract: A rotor (3) for a permanent magnet motor has a is rotatable around an axis of rotation (A) and has a plurality of axially extending permanent magnets (6) which are offset circumferentially in a symmetrical manner and arranged, respectively, in receptacles (16) of a yoke (7) which is assembled from axially stacked sheet lamellas (10), with the sheet lamellas (10) each having a coaxial inner hole (9), at least a first recess (8a) which is open toward the inner hole (9), and one second recess (8b) which is closed toward the inner hole (9), and with the lamellas being formed in a rotationally symmetrical manner so as to be offset at least by a phase angle, with at least two sheet lamellas (10) being oriented so as to be offset relative to one another by half of the phase angle.Type: GrantFiled: April 8, 2008Date of Patent: October 5, 2010Assignee: Hilti AktiengesellschaftInventors: Reinhard Riedl, Thomas Pritzen
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Patent number: 7786627Abstract: An electrical hand-held power tool includes a drive motor, a ventilation device (10) for generating an air flow (L) along a main flow path (26) for cooling the drive motor (8), and an electronic device (22) for controlling operation of the drive motor (8) all of which are located in the housing (4), and a plurality of air conducting elements (30) that project from an inner wall (32) of the housing for limiting an auxiliary flow path (36) through which at least a portion of the air flow (L) is forwarded to the electronic device (22), with the air conducting elements (30) forming an auxiliary path inlet (40) of the auxiliary flow path (36) and which projects between a main path inlet (24) of the housing (4) and the ventilation device (10) into the main flow path (26), so that the auxiliary path inlet (40) is walled off from the ventilation device (10).Type: GrantFiled: May 22, 2008Date of Patent: August 31, 2010Assignee: Hilti AktiengesellschaftInventor: Reinhard Riedl
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Publication number: 20100087127Abstract: An angle grinder for driving a cutting or grinding tool (12), includes a housing (11) having a first housing section (14) extending along a first axis (A1), and in which a motor (18) is arranged, and a second housing section (15) extending along a second axis (A2) and in which an accumulator receptacle is arranged, with the first and second axes (A1, A2) extending at an angle (?) to each other; and with a handle (20) having its first end (21) secured to the first housing section (14) and its second end (22) secured to the second housing section (15).Type: ApplicationFiled: September 30, 2009Publication date: April 8, 2010Inventors: Reinhard Riedl, Christian Koschel
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Patent number: 7642679Abstract: A drive unit (2) for a hand-held power tool includes a stator (8) located in the drive unit housing (6), an end member (12) provided at each of the opposite ends (10) of the stator (8), a rotor (14) provided with at least one permanent magnet (16), arranged in a receiving space (20) limited by the stator (8) and the end members (12), and the rotatably supported by a drive axle (18) on the end members (12); and a fan (22) rotatably connected with the drive axle (18) for generating a cooling flow (K) from one stator end (10) to another stator end (10) between an inner surface (26) of the drive unit housing (6) and an outer surface (28) of the stator (8) for cooling the stator (8) and the drive unit, with the stator outer surface (28) being provided with a plurality of deflection surfaces (32) extending transverse to the longitudinal extent (L) of the stator (8).Type: GrantFiled: July 9, 2008Date of Patent: January 5, 2010Assignee: Hilti AktiengesellschaftInventors: Reinhard Riedl, Thomas Pritzen, Torsten Luettich
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Publication number: 20090015079Abstract: A drive unit (2) for a hand-held power tool includes a stator (8) located in the drive unit housing (6), an end member (12) provided at each of the opposite ends (10) of the stator (8), a rotor (14) provided with at least one permanent magnet (16), arranged in a receiving space (20) limited by the stator (8) and the end members (12), and the rotatably supported by a drive axle (18) on the end members (12); and a fan (22) rotatably connected with the drive axle (18) for generating a cooling flow (K) from one stator end (10) to another stator end (10) between an inner surface (26) of the drive unit housing (6) and an outer surface (28) of the stator (8) for cooling the stator (8) and the drive unit, with the stator outer surface (28) being provided with a plurality of deflection surfaces (32) extending transverse to the longitudinal extent (L) of the stator (8).Type: ApplicationFiled: July 9, 2008Publication date: January 15, 2009Inventors: Reinhard Riedl, Thomas Pritzen, Torsten Luettich
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Publication number: 20080290745Abstract: An electrical hand-held power tool includes a drive motor, a ventilation device (10) for generating an air flow (L) along a main flow path (26) for cooling the drive motor (8), and an electronic device (22) for controlling operation of the drive motor (8) all of which are located in the housing (4), and a plurality of air conducting elements (30) that project from an inner wall (32) of the housing for limiting an auxiliary flow path (36) through which at least a portion of the air flow (L) is forwarded to the electronic device (22), with the air conducting elements (30) forming an auxiliary path inlet (40) of the auxiliary flow path (36) and which projects between a main path inlet (24) of the housing (4) and the ventilation device (10) into the main flow path (26), so that the auxiliary path inlet (40) is walled off from the ventilation device (10).Type: ApplicationFiled: May 22, 2008Publication date: November 27, 2008Inventor: Reinhard Riedl
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Publication number: 20080252165Abstract: A rotor (3) for a permanent magnet motor has a is rotatable around an axis of rotation (A) and has a plurality of axially extending permanent magnets (6) which are offset circumferentially in a symmetrical manner and arranged, respectively, in receptacles (16) of a yoke (7) which is assembled from axially stacked sheet lamellas (10), with the sheet lamellas (10) each having a coaxial inner hole (9), at least a first recess (8a) which is open toward the inner hole (9), and one second recess (8b) which is closed toward the inner hole (9), and with the lamellas being formed in a rotationally symmetrical manner so as to be offset at least by a phase angle, with at least two sheet lamellas (10) being oriented so as to be offset relative to one another by half of the phase angle.Type: ApplicationFiled: April 8, 2008Publication date: October 16, 2008Inventors: Reinhard Riedl, Thomas Pritzen
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Patent number: 7355314Abstract: An electrical hand-held power tool (2) includes an electric motor (4) with a stator (12), and a device (26) for reversing the rotational direction of the motor (4) and which has a contact carrier (28) fixedly securable on the stator housing with a releasable connection element and having field contacts (32) electrically connectable with the stator winding (14), and fixed contacts (42a, 42b) electrically connected with the field contacts (32), with the reversing device (26) also including a brush carrier (30) provided with carbon guides (48) and switching contacts (52a, 52b) electrically connected with the carbon guides (48) and electrically connectable with the fixed contacts (42a, 42b) of the contact carrier (28), the brush carrier (30) being rotatable relative to the contact carrier (28), and the stator housing (16) having an axial stop for the brush carrier (30).Type: GrantFiled: June 29, 2006Date of Patent: April 8, 2008Assignee: Hilti AtktiengesellschaftInventors: Reinhard Riedl, Markus Hartmann
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Patent number: 7190100Abstract: A power tool includes an electric motor (6) located in the tool housing (4) and capable of rotation in both clockwise and counterclockwise directions, a brush carrier (14) carrying at least two brushes (2) that electrically contacts the commutator (12) of the motor (6), an actuation member (26) accessible from outside of the housing (4) for rotating the brush carrier (14) relative to the housing (4) in a circumferential direction (U) of the commutator (12) between clockwise rotational position and counterclockwise rotational position, and a device for preloading the brush carrier (14) in both clockwise and counterclockwise rotational positions and having at least one spring member (32) for biasing the brush carrier (14) both in the circumferential direction (U) and the axial direction of the commutator (12).Type: GrantFiled: August 15, 2005Date of Patent: March 13, 2007Assignee: Hilti AktiengesellschaftInventor: Reinhard Riedl
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Publication number: 20070001536Abstract: An electrical hand-held power tool (2) includes an electric motor (4) with a stator (12), and a device (26) for reversing the rotational direction of the motor (4) and which has a contact carrier (28) fixedly securable on the stator housing with a releasable connection element and having field contacts (32) electrically connectable with the stator winding (14), and fixed contacts (42a, 42b) electrically connected with the field contacts (32), with the reversing device (26) also including a brush carrier (30) provided with carbon guides (48) and switching contacts (52a, 52b) electrically connected with the carbon guides (48) and electrically connectable with the fixed contacts (42a, 42b) of the contact carrier (28), the brush carrier (30) being rotatable relative to the contact carrier (28), and the stator housing (16) having an axial stop for the brush carrier (30).Type: ApplicationFiled: June 29, 2006Publication date: January 4, 2007Inventors: Reinhard Riedl, Markus Hartmann
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Patent number: 7137324Abstract: A hand-held power screwdriver includes a low-noise torque clutch (5) for transmitting torque to a tool spindle (4) and formed of claw clutch (6) and ratchet clutch (7), with the ratchet clutch (7) having a rotatably driven first ratchet member (7a) and a second ratchet member (7b) both having, respectively, oppositely oriented, circumferentially arranged, oblique cams (9), with the claw clutch (6) having a first claw member (6a) and a second claw member (6b) having oppositely oriented claws (11), respectively, the first claw member (6a) of the claw clutch (6) being fixedly connected with the second ratchet member (7b) of the ratchet clutch (7) for joint rotation therewith, and with the screwdriver further including at least one engagement member (12) for connecting the second claw member (6b) with the tool spindle (4) for joint rotation therewith and for disconnecting the claw member (6b) from the tool spindle (4) and a retaining element for connecting the second claw member (6b) of the claw clutch (6) with tType: GrantFiled: December 7, 2004Date of Patent: November 21, 2006Assignee: Hilti AktiengesellschaftInventors: Manfred Ludwig, Reinhard Riedl
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Publication number: 20060033399Abstract: A power tool includes an electric motor (6) located in the tool housing (4) and capable of rotation in both clockwise and counterclockwise directions, a brush carrier (14) carrying at least two brushes (2) that electrically contacts the commutator (12) of the motor (6), an actuation member (26) accessible from outside of the housing (4) for rotating the brush carrier (14) relative to the housing (4) in a circumferential direction (U) of the commutator (12) between clockwise rotational position and counterclockwise rotational position, and a device for preloading the brush carrier (14) in both clockwise and counterclockwise rotational positions and having at least one spring member (32) for biasing the brush carrier (14) both in the circumferential direction (U) and the axial direction of the commutator (12).Type: ApplicationFiled: August 15, 2005Publication date: February 16, 2006Inventor: Reinhard Riedl
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Patent number: 6962212Abstract: An electric hand tool (2) including a gearing component (4) and a motor component (6). A mounting bracket (8) is located between the gearing component (4) and the motor component after final assembly. A gear shaft (20) and an motor shaft (30) are suspended on the mounting bracket (8). The mounting bracket (8) features two mounting bracket components (10, 12; 64, 72), of which the gearing component (4) is allocated to one (10; 72) and the motor component (6) is allocated to the other (12; 64). Both mounting bracket components (10, 12; 64, 72) are linked to each other via a connection (46; 74).Type: GrantFiled: December 3, 2003Date of Patent: November 8, 2005Assignee: Hilti AktiengesellschaftInventor: Reinhard Riedl
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Publication number: 20050126802Abstract: A hand-held power screwdriver includes a low-noise torque clutch (5) for transmitting torque to a tool spindle (4) and formed of claw clutch (6) and ratchet clutch (7), with the ratchet clutch (7) having a rotatably driven first ratchet member (7a) and a second ratchet member (7b) both having, respectively, oppositely oriented, circumferentially arranged, oblique cams (9), with the claw clutch (6) having a first claw member (6a) and a second claw member (6b) having oppositely oriented claws (11), respectively, the first claw member (6a) of the claw clutch (6) being fixedly connected with the second ratchet member (7b) of the ratchet clutch (7) for joint rotation therewith, and with the screwdriver further including at least one engagement member (12) for connecting the second claw member (6b) with the tool spindle (4) for joint rotation therewith and for disconnecting the claw member (6b) from the tool spindle (4) and a retaining element for connecting the second claw member (6b) of the claw clutch (6) with tType: ApplicationFiled: December 7, 2004Publication date: June 16, 2005Inventors: Manfred Ludwig, Reinhard Riedl
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Publication number: 20040163832Abstract: An electric hand tool (2) including a gearing component (4) and a motor component (6). A mounting bracket (8) is located between the gearing component (4) and the motor component after final assembly. A gear shaft (20) and an motor shaft (30) are suspended on the mounting bracket (8). The mounting bracket (8) features two mounting bracket components (10, 12; 64, 72), of which the gearing component (4) is allocated to one (10; 72) and the motor component (6) is allocated to the other (12; 64). Both mounting bracket components (10, 12; 64, 72) are linked to each other via a connection (46; 74).Type: ApplicationFiled: December 3, 2003Publication date: August 26, 2004Inventor: Reinhard Riedl
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Patent number: 6547013Abstract: A screw driving tool including an axially displaceable, drive spindle (5) located in the housing, a bit holder (6) having a shank (7) which releasably connects the bit holder (6) with the drive spindle (5), an axially adjustable depth stop (9) surrounding the bit holder (6) and a portion of the drive spindle (5) and connectable with the tool housing (1), and a sleeve-shaped dust-repelling member (13) arranged between the depth stop (9) and the bit holder (6) and releasably connected with the bit holder (6).Type: GrantFiled: June 15, 2001Date of Patent: April 15, 2003Assignee: Hilti AktiengesellschaftInventors: Reinhard Riedl, Manfred Ludwig, Michael Merz