Patents by Inventor Steffen Wuensch

Steffen Wuensch 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: 20020152731
    Abstract: A manual machine tool (10) with a vacuum device for dust removal (19) situated in its housing (12) and having a blow-out connection (20) installed after this, to which a dust collection box (21), particularly self-contained, can be attached in detachable fashion via its blow-in connection (22), which dust collection box (21) is airtight on all but two sides, with the dust collection box (21) comprising air-exit holes (40) on the top side (36) and comprising a dustproof filter element (48)—especially a fluted filter—on the inside, is particularly secure against the unintentional escape of dust after the dust collection box is detached from the associated manual machine tool because a pair of sealing lips (500) arranged as a separate part is provided inside the blow-in connection (220), which pair of sealing lips (500) is connected as a single part with closing flaps (520, 1520) projecting into the interior of the dust collection box (200).
    Type: Application
    Filed: January 31, 2002
    Publication date: October 24, 2002
    Inventors: Doris Reich, Steffen Wuensch, Andreas Hoffman, Ulrich Mueller-Boysen, Franz Scheschark
  • Publication number: 20020106982
    Abstract: An eccentric plate grinder has a cylindrical housing having a lower region with an end-side edge, a rotatable grinding plate associated with a lower region, a ring-shaped brake positioned between the grinding plate and the edge, the grinding means having an elastic lip with which it is supported on the grinding plate and applies a braking force to the grinding plate, the brake also tightly closing a suction chamber inside the housing in a region of the grinding plate from outside, the brakes having throughgoing openings for ventilating the suction chamber, and further comprising valve-shaped flaps operative for releasing and closing the throughgoing openings.
    Type: Application
    Filed: June 12, 2001
    Publication date: August 8, 2002
    Inventor: Steffen Wuensch
  • Patent number: 6394884
    Abstract: A motor-driven hand grinder formed as an eccentric disk grinder has a machine housing, a working spindle accommodated in the machine housing, a grinding disk unit which is driven to perform an eccentric movement and is rotatable, a ring-shaped first rolling surface rotatable together with the grinding disk unit about an eccentric axis, a ring-shaped second rolling surface having a central axis coaxial with a central axis of the working spindle and arranged so that the first rolling surface rolls on the second rolling surface, the second rolling surface being supported rotatably about its central axis, and a braking device associated with the second rolling surface for interrupting and releasing a rotation of the second rolling surface around its central axis.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: May 28, 2002
    Assignee: Robert Bosch GmbH
    Inventor: Steffen Wuensch
  • Publication number: 20010023168
    Abstract: An electric hand power grinder formed as an eccentric grinder has a grinding plate, a abrasive carrier provided on a lower side of the grinding plate and composed of a soft material, the abrasive carrier being plate-shaped and being fixed on the grinding plate by a surface adhesive means provided on a lower side of the grinding plate and producing a surface adhesive connection with the abrasive carrier.
    Type: Application
    Filed: March 12, 2001
    Publication date: September 20, 2001
    Inventors: Steffen Wuensch, Werner Neubert, Karla Neubert, Kerstin Neubert
  • Patent number: 5967886
    Abstract: A hand power tool for flat machining has a machine housing, a motor accommodated in the machine housing, a toolholder mounted on the housing, a moveable tool carried by the toolholder and formed as a grinding plate with a triangular base surface for receiving a triangular grinding disk, the toolholder having a substantially triangular base surface substantially corresponding to the base surface of the grinding plate, the toolholder having a region against which the grinding plate is supported and on which the grinding plate is mounted on the toolholder so as to be locked on the toolholder and to be removable from the toolholder without an auxiliary tool.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: October 19, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Steffen Wuensch, Joao Bergner
  • Patent number: 5709595
    Abstract: A power tool for surface treatment comprises a housing, a motor accommodated in the housing, a tool holder, a tool supported in the tool holder and driveable by the motor, the tool having a substantially triangular base surface for receiving a substantially triangular grinding sheet, the tool holder being shell-shaped and having a substantially triangular contour substantially corresponding to the base surface of the tool, and also having an outer edge abutting on the tool.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: January 20, 1998
    Assignee: Robert Bosch GmbH
    Inventors: Joao Bergner, Steffen Wuensch
  • Patent number: 5626510
    Abstract: A power tool for surface treatment comprises a housing, a motor accommodated in the housing, a tool holder, a tool supported in the tool holder and driveable by the motor, the tool having a substantially triangular base surface for receiving a substantially triangular grinding sheet, the tool holder being shell-shaped and having a substantially triangular contour substantially corresponding to the base surface of the tool, and also having an outer edge abutting on the tool.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: May 6, 1997
    Assignee: Robert Bosch GmbH
    Inventors: Joao Bergner, Steffen Wuensch
  • Patent number: 5349754
    Abstract: A power saw has a sword having side walls which form a groove-shaped guide, and two parallel oppositely reciprocable saw blades having one longitudinal side provided with saw teeth and another longitudinal side provided with backs which are guided in the groove-shaped guide. The groove-shaped guide is interrupted by a plurality of recesses.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: September 27, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Steffen Wuensch, Claus Kemmner, Karl-Heinz Braunbach, Vinzenz Haerle
  • Patent number: 5239756
    Abstract: A motor-driven hand circular saw, has a base plate, a motor, a drive housing surrounding the motor, a saw blade provided with saw teeth and being in operative connection with the motor, a saw blade housing accommodating the saw blade, an upwardly movable saw shaft having the saw blade, a hinge arranged so that the drive housing together with saw blade is movable upwardly and downwardly normal to the saw shaft with respect to the base plate for cutting depth adjustment. The saw blade is movable in and out. A turning hinge having a turning axis extends in a feed direction so that the saw blade housing is connected through the turning hinge with the base plate, and there is at least one upper and lower handle with respect to the base plate. The saw blade housing with the saw blade is located at the left and the drive housing is located at the right as considered in the feed direction. The hinge for cutting depth adjustment is arranged at the front side of the base plate as considered in the feed direction.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: August 31, 1993
    Assignee: Robert Bosch GmbH
    Inventors: David Matzo, Joachim Mueller, Heribert Schramm, Steffen Wuensch, Andreas Hoelderlin
  • Patent number: 4073348
    Abstract: An impact drilling power tool has a housing, a spindle element mounted in the housing for rotation about an axis and for displacement in axial direction, and an impact element mounted in the housing for displacement axially toward and away from the spindle element. The impact element has an axially arranged extension coaxially received within a blind bore of the spindle element. The impact element has a plurality of cam surfaces provided on helical radial projections of the impact element, and rolling bodies of a cam follower element contact the respective cam surfaces and displace the impact element against the force of coaxial helical springs until encountering interruptions of the projections, upon which the springs rapidly displace the impact element toward the spindle element and an end face of the axial extension impacts the bottom of the blind bore. An output shaft of a driving motor drives a countershaft and via the same and meshing gears also the impact element and the spindle element.
    Type: Grant
    Filed: July 13, 1976
    Date of Patent: February 14, 1978
    Assignee: Robert Bosch GmbH
    Inventors: Heribert Schramm, Steffen Wuensch