Patents by Inventor Günter Wolf
Günter Wolf 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: 8615890Abstract: A chain saw includes a guide bar for a saw chain, a housing, a sprocket wheel cover, and a stud fixed on the housing for threadably fastening the sprocket wheel cover and the guide bar. The free thread end of the stud has a maximum usable screw-in depth (tmax) for a nut. A stop for the sprocket wheel cover having a stop surface as well as a support surface for contact engaging the stop surface are provided. In the mounted state of the guide bar, a distance (a) remains between the stop surface and the support surface. The support surface contact engages the stop surface when the guide bar is removed and the nut is tightened and screwed onto the studs to a stop screw-in depth. The stop is configured in such a manner that the maximum usable screw-in depth (tmax) is greater than the stop screw-in depth.Type: GrantFiled: March 21, 2011Date of Patent: December 31, 2013Assignee: Andreas Stihl AG & Co. KGInventors: Günter Wolf, Maximilian Eberhardt, Wolfgang Weissert
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Patent number: 8567520Abstract: A handheld work apparatus includes a drive motor (28) to drive a tool and at least one handle (3) as well as at least one anti-vibration element (9) that includes a coil spring (10). The coil spring (10) is operatively connected to the handle (3) at one end and with the drive motor (28) at the other end. The anti-vibration element has a tear-off guard (29) which extends through the anti-vibration element (9). A centering element (21) is arranged on the tear-off guard (29) to avoid, in a simple manner, that the tear-off guard moves radially outwards.Type: GrantFiled: March 4, 2011Date of Patent: October 29, 2013Assignee: Andreas Stihl AG & Co. KGInventors: Günter Wolf, Johannes Menzel, Maximilian Eberhardt, Ulrich Kapinsky
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Patent number: 8225514Abstract: A manually guided implement, such as a power saw, a cut-off machine, or the like, having a drive motor for driving a tool of the implement. The drive motor has a drive shaft that is rotatably driven about an axis of rotation. The implement has a handle on which is disposed at least one control handle for the drive motor. Formed between the handle and the drive motor is a vibration space that is spanned by at least one anti-vibration element, at least one of which includes a coil spring, the longitudinal axis of which is disposed approximately perpendicular to a longitudinal plane of the implement. The vibration space is spanned by at least one connecting element, the longitudinal axis of which is inclined relative to a transverse plane of the implement that is disposed perpendicular to the longitudinal plane.Type: GrantFiled: May 5, 2008Date of Patent: July 24, 2012Assignee: Andreas Stihl AG & Co., KGInventors: Andreas Guip, Johannes Menzel, Helmut Lux, Günter Wolf
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Patent number: 8136256Abstract: A motor chain saw has a housing, a motor arranged in the housing, a drive pinion driven by the motor, and a guide bar connected to the housing. A saw chain is driven in circulation about the guide bar by the drive pinion. A lateral panel is arranged between the housing and an attachment section of the guide bar. The guide bar and the lateral panel each have a distance relative to the drive pinion upstream and downstream of the drive pinion when viewed in a circulating direction of the saw chain. The lateral panel has a first guide that guides the saw chain at a level of rivets of the saw chain, wherein the first guide extends approximately parallel to the plane of the guide bar.Type: GrantFiled: September 19, 2008Date of Patent: March 20, 2012Assignee: Andreas Stihl AG & Co. KGInventors: Günter Wolf, Gerhard Pfleiderer
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Patent number: 8132484Abstract: A sprocket cover arrangement for a hand-held chain saw has a housing and a sprocket cover that has an opening and is connected to the housing. At least one stud bolt having a first end secured to the housing and having a second end that is a free threaded end is provided. The free threaded end projects through the opening of the sprocket cover to an exterior side of the sprocket cover when the sprocket cover is positioned in an operating position on the housing. A nut is screwed onto the free threaded end of the at least one stud bolt on the exterior side of the sprocket cover so as to secure the sprocket cover on the housing. The nut is secured captively, rotatably and with play in the opening of the sprocket cover.Type: GrantFiled: August 9, 2007Date of Patent: March 13, 2012Assignee: Andreas Stihl AG & Co. KGInventors: Gerhard Pfleiderer, Maximilian Eberhardt, Günter Wolf, Jürgen Bernert
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Publication number: 20110232110Abstract: A chain saw includes a guide bar (1) for a saw chain, a housing (3), a sprocket wheel cover (4), and at least one stud (5) fixed on the housing (3) for threadably fastening the sprocket wheel cover (4) and the guide bar (1). The free thread end (7) of the stud (5) has a maximum usable screw-in depth (tmax) for a nut (6) to be screwed thereon. A stop (9) for the sprocket wheel cover (4) having a stop surface (10) as well as a support surface (11) for contact engaging the stop surface (10) are provided. In the mounted state of the guide bar (1), a distance (a) remains between the stop surface (10) and the support surface (11). The support surface (11) contact engages the stop surface (10) of the stop (9) when the guide bar (1) is removed and the nut (6) is tightened and the nut (6) is screwed onto the studs (5) with a stop screw-in depth. The stop (9) is configured in such a manner that the maximum usable screw-in depth (tmax) is greater than the stop screw-in depth.Type: ApplicationFiled: March 21, 2011Publication date: September 29, 2011Inventors: Günter Wolf, Maximilian Eberhardt, Wolfgang Weissert
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Publication number: 20110226501Abstract: A handheld work apparatus includes a drive motor (28) to drive a tool and at least one handle (3) as well as at least one anti-vibration element (9) that includes a coil spring (10). The coil spring (10) is operatively connected to the handle (3) at one end and with the drive motor (28) at the other end. The anti-vibration element has a tear-off guard (29) which extends through the anti-vibration element (9). A centering element (21) is arranged on the tear-off guard (29) to avoid, in a simple manner, that the tear-off guard moves radially outwards.Type: ApplicationFiled: March 4, 2011Publication date: September 22, 2011Inventors: Günter Wolf, Johannes Menzel, Maximilian Eberhardt, Ulrich Kapinsky
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Publication number: 20110079943Abstract: A work apparatus has at least one handle (12) and a drive motor (3). The handle (12) is connected to said drive motor (3) via at least one anti-vibration element (16, 17, 18, 19, 20). The anti-vibration element (18, 19) is held on a first housing part and coacts with a second housing part. To achieve good damping, the anti-vibration element (19) includes a damping section (25) having an annularly-shaped wall (35) which expands in the direction of the second housing part.Type: ApplicationFiled: September 24, 2010Publication date: April 7, 2011Inventors: Günter Wolf, Johannes Menzel, Ralf Steidinger, Andreas Guip, Maximilian Eberhardt
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Publication number: 20090077815Abstract: A motor chain saw has a housing, a motor arranged in the housing, a drive pinion driven by the motor, and a guide bar connected to the housing. A saw chain is driven in circulation about the guide bar by the drive pinion. A lateral panel is arranged between the housing and an attachment section of the guide bar. The guide bar and the lateral panel each have a distance relative to the drive pinion upstream and downstream of the drive pinion when viewed in a circulating direction of the saw chain. The lateral panel has a first guide that guides the saw chain at a level of rivets of the saw chain, wherein the first guide extends approximately parallel to the plane of the guide bar.Type: ApplicationFiled: September 19, 2008Publication date: March 26, 2009Applicant: ANDREAS STIHL AG & CO. KGInventors: Günter Wolf, Gerhard Pfleiderer
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Patent number: 7412959Abstract: A manually guided implement having a housing that accommodates an internal combustion engine for driving a tool. At least an upper handle extends in a longitudinal direction of the implement on an upper side thereof. A first antivibration element connects the handle to the housing, wherein a longitudinal central axis of the antivibration element is inclined relative to a longitudinal central plane of the implement.Type: GrantFiled: June 28, 2005Date of Patent: August 19, 2008Assignee: Andreas Stihl AG & Co. KGInventors: Günter Wolf, Bernhard Dürr
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Patent number: 7293330Abstract: A tubular handle for a manually guided implement, especially a power chain saw or the like, is provided. The handle has an essentially circular cross-section and at least one mounting portion for fixing the handle to the implement. In the area of the mounting portion, the circular cross-section is flattened to form an at least approximately planar abutment portion, beyond which a circular cross-sectional portion is retained. The abutment portion is provided for fixing the tubular handle to the implement.Type: GrantFiled: December 14, 2004Date of Patent: November 13, 2007Assignee: Andreas Stihl AG & Co. KGInventors: Andreas Guip, Johannes Menzel, Helmut Schlessmann, Ralf-Rainer Kemmler, Harald Decker, Günter Wolf
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Patent number: 7270320Abstract: An antivibration element (1) is especially for a portable handheld work apparatus such as a motor-driven chain saw or a brushcutter. The antivibration element includes a coil spring (2) and at least one guide. An end section (7, 8) of the coil spring (2) is fixed to the guide. In order to provide a progressive characteristic line of the coil spring (2) in a simple way, the coil spring (2) has a transition section (11, 12), which borders at the end section (7, 8) and is guided with play on the guide. When the coil spring is under load, the turns of the transition section come at least in part into contact engagement with a helically-shaped slot in the guide so that the spring stiffness of the antivibration unit increases.Type: GrantFiled: July 30, 2003Date of Patent: September 18, 2007Assignee: Andreas Stihl AG & Co. KGInventors: Johannes Menzel, Günter Wolf, Helmut Lux, Jens Kutzbach
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Patent number: 7168132Abstract: The invention relates to a portable handheld work apparatus including a chain saw, a vacuum/blower apparatus or the like. The work apparatus has a handle (2) for carrying and guiding the work apparatus (1). Thumb supports (4, 5) are provided on both sides with respect to the longitudinal axis (3) of the handle (2).Type: GrantFiled: March 15, 2002Date of Patent: January 30, 2007Assignee: Andreas Stihl AG & Co.Inventors: Bernhard Dürr, Michael Tinius, Jörg Schlossarczyk, Günter Wolf, Martin Schif, Werner Geyer, Michael März, Jürgen Häberlein
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Patent number: 7152853Abstract: A manually operated implement such as a chain saw, a parting-off grinder or similar device has an internal combustion engine to drive a tool and a handle arrangement to operate the implement. The handle arrangement is connected to the internal combustion engine via a vibration damping system, the vibration damping system comprising at least one anti-vibration element. In order to achieve good vibration damping and sufficient operational rigidity in all operating ranges, in at least one direction of vibration in a predetermined frequency range the anti-vibration element has a first characteristic curve in a first state and a second characteristic curve in a second state and the anti-vibration element can be switched between the first state and the second state.Type: GrantFiled: June 4, 2004Date of Patent: December 26, 2006Assignee: Andreas Stihl AG & Co. KGInventors: Johannes Menzel, Helmut Lux, Marc Schmid, Günter Wolf
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Publication number: 20060068849Abstract: It is proposed to decrease the interference in a CDMA network by automatically adapting the radiation pattern, and thereby the coverage areas, of a cell to the service coverage area without operator intervention. This will increase the overall capacity of the network, because a fully loaded cell generates less interference to neighboring cells and hence leaves more capacity in those cells. It will avoid coverage holes in case certain cells become highly loaded such that their coverage area shrinks (“cell breathing”). In an embodiment of the invention, the radiation pattern is adapted by changing the down-tilt of the antenna.Type: ApplicationFiled: September 29, 2004Publication date: March 30, 2006Inventors: Urs Bernhard, Guenter Wolf
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Patent number: 6994068Abstract: An antivibration device is mounted between a motor unit (1) having an internal combustion engine (2) and a vibration-insulated unit (3) of a portable handheld work apparatus (4) such as a motor-driven chain saw, cutoff machine, suction/blower apparatus or the like. The antivibration device (5) includes a vibration damper (6) made of foamed elastic material (7).Type: GrantFiled: February 10, 2004Date of Patent: February 7, 2006Assignee: Andreas Stihl AG & Co, KGInventors: Johannes Menzel, Markus Keller, Helmut Lux, Christoph von Hiller, Günter Wolf, Andreas Guip
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Patent number: 6830601Abstract: The invention relates to a carburetor arrangement for an internal combustion engine (1) which drives a work apparatus. The engine (1) has an intake channel (3) leading through a carburetor (2). The intake channel (3) includes an intake opening (4) on the side of the carburetor (2) facing away from the engine (1). A baffle wall (5) is provided and covers the intake opening (4) at least partially. The baffle wall (5) is mounted transversely to the longitudinal axis (6) of the intake channel (3) at a spacing to the intake opening (4). The baffle wall (5) and the intake opening (4) define a baffle enclosure (7) disposed therebetween. At least a first component part (8) of the baffle wall (5) is inclined with respect to the longitudinal axis (6) of the intake channel (3) in such a manner that fuel droplets (9), which exit from the intake channel (3) and which impinge on the first component part (8) of the baffle wall (5), form a fuel film (10).Type: GrantFiled: August 18, 2003Date of Patent: December 14, 2004Assignee: Andreas Stihl AG & Co. KGInventors: Georg Maier, Martin Benholz, Günter Wolf, Philipp Neumann, Andreas Bähner
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Patent number: 6761346Abstract: A mold for a plastic grip of a portable tool has two halves with depressions forming the negative. The base body has a top grip extending, when mounted, across the topside of the housing perpendicularly to a longitudinal axis of the tool and a lateral grip connected to the top grip extending therefrom, when mounted, laterally downwardly. The top grip has a first end and the lateral grip has a second end for connecting to the housing. Top and lateral grips have identical elliptical cross-sections rotated to one another in the circumferential direction of the grip by an angle of rotation. Cross-sections have a first diameter larger than a second diameter. Mold depressions have recesses for molding elongate, raised portions in the longitudinal direction. Recesses are adjacent circumferentially and extend spirally. Separation surfaces of mold halves are positioned in a longitudinal center plane of a recess adjacent the first diameter.Type: GrantFiled: August 2, 1999Date of Patent: July 13, 2004Assignee: Andreas Stihl AG & Co.Inventors: Günter Wolf, Manfred Thais
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Patent number: 6679234Abstract: A manually guided implement having an internal combustion engine and a carburetor for supplying the engine with a fuel/air mixture is provided. A combustion air stream is drawn in through the carburetor by the engine. A warming medium heated up by the engine can be passed along the outer surfaces of the carburetor separate from the combustion air stream.Type: GrantFiled: February 28, 2002Date of Patent: January 20, 2004Assignee: Andreas Stihl AG & Co.Inventors: Georg Maier, Ralf Tuckermann, Günter Wolf, Philipp Neumann, Rebekka Helfen, Maximilian Eberhardt
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Patent number: 6607574Abstract: The invention relates to a carburetor arrangement for an internal combustion engine (1) which drives a work apparatus. The engine (1) has an intake channel (3) leading through a carburetor (2). The intake channel (3) includes an intake opening (4) on the side of the carburetor (2) facing away from the engine (1). A baffle wall (5) is provided and covers the intake opening (4) at least partially. The baffle wall (5) is mounted transversely to the longitudinal axis (6) of the intake channel (3) at a spacing to the intake opening (4). The baffle wall (5) and the intake opening (4) define a baffle enclosure (7) disposed therebetween. At least a first component part (8) of the baffle wall (5) is inclined with respect to the longitudinal axis (6) of the intake channel (3) in such a manner that fuel droplets (9), which exit from the intake channel (3) and which impinge on the first component part (8) of the baffle wall (5), form a fuel film (10).Type: GrantFiled: March 22, 2002Date of Patent: August 19, 2003Assignee: Andreas Stihl AG & Co.Inventors: Georg Maier, Martin Benholz, Günter Wolf, Philipp Neumann