Patents by Inventor Klaus Langhans
Klaus Langhans 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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Publication number: 20070067947Abstract: An implement comprising a first handle, on which are disposed control elements for the implement, and a second handle. The first handle is adjustable between a first operating position for a two-handed operation in which the implement is adapted to be guided by both the first handle and the second handle, and a second operating position for one-handed operation in which the implement is adapted to be guided by the first handle.Type: ApplicationFiled: September 27, 2006Publication date: March 29, 2007Applicant: Andreas Stihl AG & Co., KGInventors: Markus Hittmann, Uwe Gaese, Klaus Langhans
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Publication number: 20060108128Abstract: A protective shield for a trimmer having a cutting head that is rotatable about an axis of rotation and supports a cutting thread that rotates about an axis of rotation with the cutting head and determines a cutting circle, covers at least partially the cutting circle. The protective cover has a base member and a cutting-to-length blade arranged on the base member so as to be positioned circumferentially relative to a cutting circle of the rotating cutting thread. The cutting-to-length blade has a cutting edge that, relative to the axis of rotation of the rotating cutting thread, is arranged in an axially displaced position displaced in an axial direction relative to the cutting circle. A device for axially deflecting the rotating cutting thread out of the cutting circle to the cutting edge is provided.Type: ApplicationFiled: October 26, 2005Publication date: May 25, 2006Applicant: ANDREAS STIHL AG & CO. KGInventors: Klaus Langhans, Josef Egger, Kai-Ulrich Machens, Marcus Stein, Markus Herzog, Dieter Kremsler
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Publication number: 20060091235Abstract: A portable sprayer having a backpack to which are secured a blower unit and a supply tank. The blower unit includes a drive motor and a blower driven thereby. The blower unit is mounted on the backpack by at least one anti-vibration element. The supply tank, for example for spray agent, is mechanically separated from the blower unit and is also mounted on the backpack by at least one anti-vibration element. A removable, at least approximately rigid connection element is provided for coupling the supply tank and the blower unit together or for isolating them from one another with respect to vibrations.Type: ApplicationFiled: October 12, 2005Publication date: May 4, 2006Applicant: Andreas Stihl AG & Co. KGInventors: Klaus Langhans, Michael Raffenberg, Bettina Zitzmann
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Publication number: 20060059654Abstract: A blower apparatus has a blower housing having a blower intake. A motor-driven blower is arranged in the blower housing and takes in air in a flow direction through the blower intake into the blower housing. A device for mechanical clearing of the blower intake is arranged at the blower intake. The mechanical clearing device is driven in rotation during operation of the blower apparatus.Type: ApplicationFiled: August 29, 2005Publication date: March 23, 2006Applicant: ANDREAS STIHL AG & CO. KGInventors: Dieter Kremsler, Michael Hocquel, Klaus Langhans, Helmut Swistun, Uwe Gaese
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Publication number: 20050257510Abstract: A vacuum arrangement has a vacuum pipe having a vacuum opening facing a ground surface and adapted to pick up from the ground surface a material to be collected. The vacuum pipe conveys the material to be collected into a collecting container connected to the vacuum pipe. The vacuum pipe has a working area located within the area of the vacuum opening. At least one blower nozzle having a blower air exit is arranged such that a blower air flow exiting from the blower air exit is directed onto the ground surface into the working area. The blower air exit and the vacuum opening are positioned at a spacing relative to one another.Type: ApplicationFiled: May 11, 2005Publication date: November 24, 2005Applicant: ANDREAS STIHL AG & CO. KGInventors: Georg Maier, Harald Mang, Klaus Langhans, Wolfgang Layher, Uwe Gaese, Jorg Schutt
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Patent number: 6904977Abstract: A portable handheld work apparatus, such as a motorized cultivator (1) or the like, includes a frame (2) which extends essentially in the longitudinal direction (21) of the work apparatus. A drive motor (3) is fixed at one end (22) of the frame (2) and a work tool is driven by this drive motor. The opposite-lying end (23) includes at least a handle (7, 8) for guiding the work apparatus during the operation thereof. In order to make possible an ergonomic work posture of the operator, the handle (7, 8) lies facing away upwardly from the ground surface (42) in the work position of the motorized work apparatus. The work position is a position in which the work tool lies on the ground surface (42) to be worked.Type: GrantFiled: October 20, 2003Date of Patent: June 14, 2005Assignee: Andreas Stihl AG & Co. KGInventors: Gerhard Zerrer, Klaus Langhans, Jochen Kramer, Thomas Stark, Michael Vögtle, Günter Mayer
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Patent number: 6748664Abstract: A gear head for a manually guided power implement is provided. Part of the tool shaft, which receives a rotatable cutting tool, is embodied as a cylindrical splined shaft having grooves for the positive transmission of torque to the cutting tool. An abutment plate is disposed on the tool shaft and has an abutment surface that extends essentially perpendicular to the longitudinal axis of the tool shaft. A centering cylinder extends through a circular central opening of the cutting tool and has inwardly directed longitudinal ribs that engage in the grooves of these splined shaft. A free end of the centering cylinder is provided with a beveled portion that extends from an outer contour of the cylinder to into the grooves.Type: GrantFiled: May 2, 2001Date of Patent: June 15, 2004Assignee: Andreas Stihl AG & Co.Inventors: Rudolf Dirks, Klaus Langhans
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Patent number: 6735873Abstract: The invention is directed to a guide tube assembly for a portable handheld work apparatus with a drive motor (3) mounted at one end (2) of the guide tube (1). The drive motor (3) is connected to a work tool (6) mounted at one end (5) of the guide tube (1) via a drive shaft (4) mounted in the guide tube (1). A reinforcing sleeve (8) is axially inserted into the work tool end (5) of the guide tube (1) in order to better introduce engine loads at a flange (7) of the work tool (6) into the guide tube (1). The reinforcing sleeve (8) projects axially along a part length (L′) of the guide tube (1) from the flange (7) into the guide tube (1).Type: GrantFiled: September 17, 2001Date of Patent: May 18, 2004Assignee: Andreas Stihl AG & Co.Inventors: Klaus Langhans, Johann Trumpf
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Publication number: 20040079538Abstract: A portable handheld work apparatus, such as a motorized cultivator (1) or the like, includes a frame (2) which extends essentially in the longitudinal direction (21) of the work apparatus. A drive motor (3) is fixed at one end (22) of the frame (2) and a work tool is driven by this drive motor. The opposite-lying end (23) includes at least a handle (7, 8) for guiding the work apparatus during the operation thereof. In order to make possible an ergonomic work posture of the operator, the handle (7, 8) lies facing away upwardly from the ground surface (42) in the work position of the motorized work apparatus. The work position is a position in which the work tool lies on the ground surface (42) to be worked.Type: ApplicationFiled: October 20, 2003Publication date: April 29, 2004Inventors: Gerhard Zerrer, Klaus Langhans, Jochen Kramer, Thomas Stark, Michael Vogtle, Gunter Mayer
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Publication number: 20020032965Abstract: The invention is directed to a guide tube assembly for a portable handheld work apparatus with a drive motor (3) mounted at one end (2) of the guide tube (1). The drive motor (3) is connected to a work tool (6) mounted at one end (5) of the guide tube (1) via a drive shaft (4) mounted in the guide tube (1). A reinforcing sleeve (8) is axially inserted into the work tool end (5) of the guide tube (1) in order to better introduce engine loads at a flange (7) of the work tool (6) into the guide tube (1). The reinforcing sleeve (8) projects axially along a part length (L′) of the guide tube (1) from the flange (7) into the guide tube (1).Type: ApplicationFiled: September 17, 2001Publication date: March 21, 2002Inventors: Klaus Langhans, Johann Trumpf
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Publication number: 20010037576Abstract: A gear head for a manually guided power implement is provided. Part of the tool shaft, which receives a rotatable cutting tool, is embodied as a cylindrical splined shaft having grooves for the positive transmission of torque to the cutting tool. An abutment plate is disposed on the tool shaft and has an abutment surface that extends essentially perpendicular to the longitudinal axis of the tool shaft. A centering cylinder extends through a circular central opening of the cutting tool and has inwardly directed longitudinal ribs that engage in the grooves of these splined shaft. A free end of the centering cylinder is provided with a beveled portion that extends from an outer contour of the cylinder to into the grooves.Type: ApplicationFiled: May 2, 2001Publication date: November 8, 2001Applicant: Andreas Stihl AG & Co.Inventors: Rudolf Dirks, Klaus Langhans