Patents by Inventor Harald Knetsch
Harald Knetsch 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: 20190255666Abstract: A device for holding a stud with a radially flange and an axial shank. The holding device comprising a collet including a clamping section and a hollow insertion section defining an insertion axis such that the stud can be inserted via the insertion section to the clamping section. The holding device further comprising a tubular securing sleeve located radially inward of and concentric with the insertion section. A clearance is defined between a bottom end of the securing sleeve and a top end of the clamping section and is adapted to releasably receive the stud flange. A first air flow channel in a first direction is adapted to blow feed the stud into the collet; and a second airflow channel oriented in a second different direction is adapted to maintain the stud shank substantially in line with the insertion axis.Type: ApplicationFiled: February 15, 2019Publication date: August 22, 2019Inventors: Adrian BECKER, Christoph EISENBERG, Jochen HAIN, Harald KNETSCH, Nicolas NAB
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Patent number: 8793855Abstract: A method of feeding a stud to a joining head including a stud shank clamp and operable to join the stud to a workpiece, and wherein the method of feeding the stud comprises the steps of providing a stud holding device including a securing sleeve and a plurality of collet arms; feeding the stud into the stud holding device to a first position wherein the flange is arranged above the free end of the plurality of arms and below the securing sleeve; and securing the stud in the first position by engaging the securing sleeve behind the flange.Type: GrantFiled: September 16, 2013Date of Patent: August 5, 2014Assignee: Newfrey LLCInventors: Jochen Hain, Alexander Schug, Karl Briel, Markus Feierabend, Michael Schneider, Frank Rosemann, Wolfgang Werner, Harald Knetsch
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Patent number: 8533922Abstract: A holding device for holding a stud, which includes a radially projecting flange in a securing position, comprises a collet component including a hollow tubular insertion section defining an insertion axis, and a clamping section operable to exert a radially inwardly directed clamping force for clamping the stud. A securing device is arranged on the insertion section and includes a securing sleeve formed of plurality of separate securing-sleeve sections that are radially movable relative to one another. A clearance space is defined between a bottom end of the securing-sleeve sections and a top end of the clamping section, and the clearance space is operable for holding a flange of a stud in the securing position.Type: GrantFiled: January 7, 2011Date of Patent: September 17, 2013Assignee: Newfrey LLCInventors: Jochen Hain, Alexander Schug, Karl-Heinz Briel, Markus Feierabend, Michael Schneider, Frank Rosemann, Wolfgang Werner, Harald Knetsch
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Publication number: 20110146456Abstract: A holding device for holding a stud, which includes a radially projecting flange in a securing position, comprises a collet component including a hollow tubular insertion section defining an insertion axis, and a clamping section operable to exert a radially inwardly directed clamping force for clamping the stud. A securing device is arranged on the insertion section and includes a securing sleeve formed of plurality of separate securing-sleeve sections that are radially movable relative to one another. A clearance space is defined between a bottom end of the securing-sleeve sections and a top end of the clamping section, and the clearance space is operable for holding a flange of a stud in the securing position.Type: ApplicationFiled: January 7, 2011Publication date: June 23, 2011Applicant: NEWFREY LLCInventors: Jochen HAIN, Alexander SCHUG, Karl-Heinz BRIEL, Markus FEIERABEND, Michael SCHNEIDER, Frank ROSEMANN, Wolfgang WERNER, Harald KNETSCH
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Patent number: 5640758Abstract: A component installation tool of the type having a rearward stroke to accommodate delivery of a component to the front of the tool and a forward stroke to engage, deliver and install the component at a workpiece, the tool including a housing, a reciprocating mechanism contained therein, a feeder support mounted on the housing, a reciprocal magazine mounted on the feeder support for reciprocation between a component receiving position adjacent the tool and a position for delivering a component in front of the mechanism; and delivery means for delivering a component to a chamber in the magazine when the magazine is in the component receiving position and the mechanism is in the forward stroke.Type: GrantFiled: April 12, 1995Date of Patent: June 24, 1997Assignee: Emhart Inc.Inventors: Andreas Roessler, Norbert Tessarsch, Harald Knetsch
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Patent number: 5486678Abstract: Process for welding a weld-in part in a weld point comprising a metal plate and a metal covering lying thereon with two tools of which one is formed by a welding head and the other by a drill for preparing the weld point by a drilling process. The drill attached to a revolving device initially in one operating position, by means of a lifting motor which can be moved in a controlled manner between a return position and a machining end-position and vice versa, performs the process at least until the metal plate is drilled (machining end-position) in preparation of the weld point. By pivoting of the revolving device, a welding head arranged on the revolving device and equipped with the weld-in part is then brought into an operating position above the prepared weld point to perform welding, meanwhile the drill is coupled to the lifting motor when the welding head is coupled to the lifting motor when the drill is uncoupled to perform welding on completion of the drilling process.Type: GrantFiled: March 1, 1994Date of Patent: January 23, 1996Assignee: Emhart Inc.Inventors: Jorg Hofmann, Harald Knetsch, Kurt Liebich, Reinhold Opper, Hans Wiessler, Alois Bauer
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Patent number: 5277353Abstract: A stud welding device comprises a stud holder and a movable member which moves the stud holder to carry a stud into position for welding. The movable member is provided by the stator or the armature of a helical thread reluctance motor.Type: GrantFiled: February 24, 1993Date of Patent: January 11, 1994Assignee: Emhart Inc.Inventors: Peter K. Budig, Klaus G. Schmitt, Harald Knetsch
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Patent number: 5171959Abstract: Process for welding a weld stud onto a workpiece by means of a drawn arc, in which the weld stud is placed onto the workpiece and, with performance of a welding stroke, is removed from the workpiece in a return stroke, igniting a pilot arc, and is advanced toward the workpiece again in a forward stroke during the combustion of a connected welding arc. The welding arc is divided by pulse-wise current reduction to a minimum value into a sequence of current pulses and the last of these current pulses is extended in time by at least about 1.5 times relative to the preceding current pulses. This extended current pulse lasts substantially to the end of the forward stroke.Type: GrantFiled: December 21, 1991Date of Patent: December 15, 1992Assignee: Emhart Inc.Inventors: Klaus G. Schmitt, Harald Knetsch, Wolfgang Obermann, Wolfgang Schmidt
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Patent number: 5006686Abstract: Method of controlling stud-welding apparatus wherein the lifting coil is essentially current and voltage free at the beginning of the plunge stroke but the plunge stroke is damped by a pulse current applied to the lifting coil a very short time before impact and ceased when the stud contacts the workpiece.Type: GrantFiled: September 6, 1990Date of Patent: April 9, 1991Assignee: Emhart Inc.Inventors: Klaus G. Schmitt, Harald Knetsch