Patents Assigned to EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBH
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Patent number: 10660267Abstract: A Knife attachment arrangement for oscillatingly driven mower knives, including a shaft (1) defining a first longitudinal axis (X) and having a receiving space (4) and a mower knife drive pin (2) engaging in the receiving space (4) and being detachably connected to the shaft (1). A head bearing holding area (13) of the mower knife drive pin (2) engages in the receiving space (4) and has a first contact face (14) that is in contact with the first support face (6) and is curved opposite to the first support face (6). An undercut (8) is formed in the wall (5) delimiting the receiving space (4) and the head bearing holding area (13) of the mower knife drive pin (2) has a collar (16) engaging in the undercut (8), wherein the undercut is formed as a groove (8) in the wall (5), the groove (8) extends radially with respect to the second longitudinal axis (Y).Type: GrantFiled: May 12, 2016Date of Patent: May 26, 2020Assignee: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBHInventors: Heinrich Gunter Schumacher, Jochen Heinemann
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Patent number: 10602661Abstract: A drive (100) has two gearing arrangements (101, 102) both with a first gearing (103) and a second gearing (104). Each gearing (103, 104) has at least one transfer element (106) for transferring a reciprocating motion of a driving hinge point (107) into a reciprocating motion of an output hinge point (108). Output elements (117) are coupled to the output hinge points (108) of the two gearings (103, 104). A drive element (116) is coupled to the driving hinge points (107). A common drive element (116) is connected to the driving hinge points (107) of the gearings (103, 104) of the two gearing arrangements (101, 102). The gearing arrangements (101, 102) are mirror-symmetrically arranged so that the output elements (117) are driven on a common output axis in an opposed manner with respect to each other.Type: GrantFiled: October 14, 2016Date of Patent: March 31, 2020Assignee: EWM Eichelhardter Werkzeug- und Maschinenbau GmbHInventors: Heinrich Gunter Schumacher, Ralf Schmidt
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Patent number: 10495202Abstract: An angular gear arrangement for mower knife driven in an oscillating manner, including a transmission housing, an input shaft, which engages in the interior of the transmission housing, a rotor, which is mounted in the transmission housing to be rotatable about a first axis of rotation by a first bearing, a crankshaft, which engages in the receiving space of the rotor through the receiving opening and is mounted in the receiving space, to be rotatable about a second axis of rotation by a second bearing, a driving element, which is non-rotationally connected to the rotor and mounted so as to be rotatable about the first axis of rotation by at least one third bearing, and support means, which are arranged in the transmission housing and on which the third bearing is axially supported, the support means being releasably fastened to the transmission housing.Type: GrantFiled: March 23, 2016Date of Patent: December 3, 2019Assignee: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBHInventors: Marco Jung, Heinrich Günter Schumacher
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Patent number: 9992929Abstract: A connecting arrangement (1) for connecting a mower knife drive to a mower knife (7), that moves back and forth along a knife or X-axis, has a driving element (2) and an output element (3). The driving element (2) connects the connecting arrangement (1) to the mower knife drive. The output element (3) connects the connecting arrangement (1) to the mower knife (7). The driving element (2) and the output element (3) rotate relative to one another about three mutually perpendicular axes of rotation (X, Y, Z). Also, the driving element (2) and output element (3) can be moved relative to one another along at least two of the axes of rotation (Y, Z).Type: GrantFiled: December 3, 2016Date of Patent: June 12, 2018Assignee: EWM Eichelhardter Werkzeug- und Maschinenbau GmbHInventors: Heinrich Gunter Schumacher, Andreas Roth
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Publication number: 20180153097Abstract: A Knife attachment arrangement for oscillatingly driven mower knives, including a shaft (1) defining a first longitudinal axis (X) and having a receiving space (4) and a mower knife drive pin (2) engaging in the receiving space (4) and being detachably connected to the shaft (1). A head bearing holding area (13) of the mower knife drive pin (2) engages in the receiving space (4) and has a first contact face (14) that is in contact with the first support face (6) and is curved opposite to the first support face (6). An undercut (8) is formed in the wall (5) delimiting the receiving space (4) and the head bearing holding area (13) of the mower knife drive pin (2) has a collar (16) engaging in the undercut (8), wherein the undercut is formed as a groove (8) in the wall (5), the groove (8) extends radially with respect to the second longitudinal axis (Y).Type: ApplicationFiled: May 12, 2016Publication date: June 7, 2018Applicant: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBHInventors: Heinrich Gunter SCHUMACHER, Jochen HEINERMANN
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Publication number: 20180119787Abstract: An angular gear arrangement for mower knife driven in an oscillating manner, including a transmission housing, an input shaft, which engages in the interior of the transmission housing, a rotor, which is mounted in the transmission housing to be rotatable about a first axis of rotation by a first bearing, a crankshaft, which engages in the receiving space of the rotor through the receiving opening and is mounted in the receiving space, to be rotatable about a second axis of rotation by a second bearing, a driving element, which is non-rotationally connected to the rotor and mounted so as to be rotatable about the first axis of rotation by at least one third bearing, and support means, which are arranged in the transmission housing and on which the third bearing is axially supported, the support means being releasably fastened to the transmission housing.Type: ApplicationFiled: March 23, 2016Publication date: May 3, 2018Applicant: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBHInventors: Marco JUNG, Heinrich Günter SCHUMACHER