Patents Assigned to Eichelhardter Werkzeug-und Maschinenbau GmbH
  • Patent number: 10660267
    Abstract: 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: Grant
    Filed: May 12, 2016
    Date of Patent: May 26, 2020
    Assignee: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBH
    Inventors: Heinrich Gunter Schumacher, Jochen Heinemann
  • Patent number: 10602661
    Abstract: 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: Grant
    Filed: October 14, 2016
    Date of Patent: March 31, 2020
    Assignee: EWM Eichelhardter Werkzeug- und Maschinenbau GmbH
    Inventors: Heinrich Gunter Schumacher, Ralf Schmidt
  • Patent number: 10495202
    Abstract: 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: Grant
    Filed: March 23, 2016
    Date of Patent: December 3, 2019
    Assignee: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBH
    Inventors: Marco Jung, Heinrich Günter Schumacher
  • Patent number: 9992929
    Abstract: 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: Grant
    Filed: December 3, 2016
    Date of Patent: June 12, 2018
    Assignee: EWM Eichelhardter Werkzeug- und Maschinenbau GmbH
    Inventors: Heinrich Gunter Schumacher, Andreas Roth
  • Publication number: 20180153097
    Abstract: 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: Application
    Filed: May 12, 2016
    Publication date: June 7, 2018
    Applicant: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBH
    Inventors: Heinrich Gunter SCHUMACHER, Jochen HEINERMANN
  • Publication number: 20180119787
    Abstract: 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: Application
    Filed: March 23, 2016
    Publication date: May 3, 2018
    Applicant: EWM EICHELHARDTER WERKZEUG- UND MASCHINENBAU GMBH
    Inventors: Marco JUNG, Heinrich Günter SCHUMACHER
  • Patent number: 8608399
    Abstract: A connection arrangement for connecting a sickle drive with a sickle (1) has a connection element (4) on the sickle (1). The connection element (4) has an open ring with a through bore (6) that extends along a longitudinal axis (5). A cup-shaped intermediate element (14) rests in the through bore (6) of the connection element (4). The cup-shaped intermediate element (14) has a spherical inner face (18). A rotational bearing (32) with a spherical outer face (21) is adapted to be accommodated in the spherical inner face (18) in the intermediate element (14).
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: December 17, 2013
    Assignee: Eichelhardter Werkzeug-und Maschinenbau GmbH
    Inventor: Heinrich Günter Schumacher
  • Publication number: 20110110707
    Abstract: A connection arrangement for connecting a sickle drive with a sickle (1) has a connection element (4) on the sickle (1). The connection element (4) has an open ring with a through bore (6) that extends along a longitudinal axis (5). A cup-shaped intermediate element (14) rests in the through bore (6) of the connection element (4). The cup-shaped intermediate element (14) has a spherical inner face (18). A rotational bearing (32) with a spherical outer face (21) is adapted to be accommodated in the spherical inner face (18) in the intermediate element (14).
    Type: Application
    Filed: November 8, 2010
    Publication date: May 12, 2011
    Applicant: Eichelhardter Werkzeug-und Maschinenbau GmbH
    Inventor: Heinrich Günter Schumacher