Patents Assigned to Hackforth GmbH
  • Patent number: 9701386
    Abstract: An input shaft for the torque-transmitting connection of motor and propeller of a ship drive has input-side and output-side interfaces and a composite hollow shaft made of fiber composite material arranged therebetween. The input shaft has a section which is arranged between the input-side and output-side interfaces, is connected to the composite hollow shaft, and is made of non-flammable material. A ship includes a hull, a bulkhead running transversely to the longitudinal axis of the hull, a motor, a propeller and an input shaft described above. The input shaft of the ship is fed through the bulkhead and has the non-flammable section arranged in the region of the feedthrough through the bulkhead.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: July 11, 2017
    Assignee: Hackforth GmbH
    Inventors: Radovan Marovic, Guenther Lutz
  • Patent number: 9163673
    Abstract: The invention relates to a method for the production of a coupling segment (11) of a segmented, elastic coupling (10), wherein an elastomer body (2) is disposed between two metallic connection flanges (3, 4), and the elastomer body (2) is connected with the two connection flanges (3, 4) in material-fit manner, by means of vulcanization, to form a coupling body (1). In order to be able to produce such a segmented, elastic coupling (10) at the lowest possible costs, it is proposed, with the invention, that the coupling segment (11) is cut out from the coupling body (1) by means of water jet cutting, wherein the water jet cuts the elastomer body (2) and, at the same time, at least one of the two connection flanges (3, 4).
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: October 20, 2015
    Assignee: Hackforth GmbH
    Inventors: Torsten Kastner, Gunnar Goedecke
  • Publication number: 20150225057
    Abstract: The invention relates to an input shaft (10), in particular for the torque-transmitting connection of motor and propeller of a ship drive, the input shaft (10) having input-side and output-side interfaces and at least one composite hollow shaft made of fibre composite material arranged therebetween. According to the invention, the input shaft (10) has at least one section (11) which is arranged between the input-side and output-side interfaces, is connected to the composite hollow shaft, and is made of non-flammable material. The invention further relates to a ship comprising a hull and at least one bulkhead (3) running transversely to the longitudinal axis of the hull, a motor, a propeller and an input shaft (10) for the torque-transmitting connection of motor and propeller, the input shaft (10) being fed through the bulkhead (3) and having at least one composite hollow shaft made of fibre composite material.
    Type: Application
    Filed: August 8, 2013
    Publication date: August 13, 2015
    Applicant: Hackforth GmbH
    Inventors: Radovan Marovic, Guenther Lutz
  • Patent number: 9028333
    Abstract: A shaft for transmitting torques includes a hollow shaft made of fiber-reinforced plastic. A flange which can be used to connect the hollow shaft to a driving or driven machine part is fastened at least to one end of the hollow shaft. The flange is fastened to the hollow shaft via a number of screw connections. Each screw connection includes a screw and a nut. The shank of the screw projects in the direction of the hollow shaft through an opening in the flange that is arranged in the connection region between the end edge of the hollow shaft and the flange. The shank extends at least partially inside the shell of the hollow shaft and engages with the nut arranged on the hollow shaft. The head of the screw is supported on that side of the flange opposed to the hollow shaft.
    Type: Grant
    Filed: September 5, 2011
    Date of Patent: May 12, 2015
    Assignee: Hackforth GmbH
    Inventor: Guenther Lutz
  • Publication number: 20130281219
    Abstract: The invention relates to a method for the production of a coupling segment (11) of a segmented, elastic coupling (10), wherein an elastomer body (2) is disposed between two metallic connection flanges (3, 4), and the elastomer body (2) is connected with the two connection flanges (3, 4) in material-fit manner, by means of vulcanization, to form a coupling body (1). In order to be able to produce such a segmented, elastic coupling (10) at the lowest possible costs, it is proposed, with the invention, that the coupling segment (11) is cut out from the coupling body (1) by means of water jet cutting, wherein the water jet cuts the elastomer body (2) and, at the same time, at least one of the two connection flanges (3, 4).
    Type: Application
    Filed: December 16, 2011
    Publication date: October 24, 2013
    Applicant: HACKFORTH GMBH
    Inventors: Torsten Kastner, Gunnar Goedecke
  • Publication number: 20130267333
    Abstract: The invention relates to a shaft (1) for transmitting torques, comprising a hollow shaft (2) made of fiber-reinforced plastic, wherein a flange (3, 4) which can be used to connect the hollow shaft (2) to a driving or driven machine part is fastened at least to one end of the hollow shaft (2).
    Type: Application
    Filed: September 5, 2011
    Publication date: October 10, 2013
    Applicant: HACKFORTH GMBH
    Inventor: Guenther Lutz
  • Patent number: 8357051
    Abstract: A torsionally elastic shaft coupling has an input flange and an output flange which are each used for connecting the shaft coupling to adjacent machine elements. There are two serially connected, elastic elastomer members, and an intermediate member that is connected to the input flange via the first elastomer member and to the output flange via the second elastomer member in such a way that torque can be transmitted from the input flange to the intermediate member via the first, softer elastomer member and from the intermediate member to the output flange via the second, harder elastomer member. A stop which limits the torsional angle between the input flange and the intermediate member is located between the intermediate member and the input flange. The shaft coupling is designed in a particularly compact fashion in that the second, hard elastomer member surrounds the first, soft elastomer member.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: January 22, 2013
    Assignee: Hackforth GmbH
    Inventors: Andreas Mehlan, Christof Hessling
  • Publication number: 20120283380
    Abstract: The invention relates to an elastic coupling comprised of connecting flanges located on the drive input and drive output side as well as comprised of at least one rubber .body arranged between them. The invention proposes that the at least one rubber body contains silicic acid/silica as filler agent as well as dyeing pigments.
    Type: Application
    Filed: November 3, 2010
    Publication date: November 8, 2012
    Applicant: HACKFORTH GmbH
    Inventor: Ralf Bauermeister
  • Patent number: 8033919
    Abstract: An elastic shaft coupling has a drive-side interface and an output-side mechanical interface. Both interfaces are intended in each case for connecting the shaft coupling to an adjacent machine element. The shaft coupling has at least two elastic rubber elements which are connected behind one another between the drive-side and the output-side interfaces and the axial material thickness of which increases in each case at a growing radial spacing from the center axis of the shaft coupling. To reduce the amount of rubber of the shaft coupling with retention of its elastic properties, the respective rubber elements are of non-uniform configuration with regard to their torsional rigidity and to be precise are so non-uniform that the torsional rigidity of one of the two rubber elements is always at least one and a half times as great as the torsional rigidity of the other rubber element.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: October 11, 2011
    Assignee: Hackforth GmbH
    Inventor: John Baikie
  • Patent number: 7597626
    Abstract: A membrane-type coupling includes an input flange and an output flange which are interconnected via membrane packs in order to transmit torque in such a way that an input membrane pack is braced to the input flange, two output membrane packs that are connected in parallel are braced to the output flange, and the membrane packs are braced to one another with the aid of a clamping set composed of clamping rings. In order to reduce the volume and weight of such a membrane-type coupling, the input membrane pack is disposed between the two output membrane packs.
    Type: Grant
    Filed: April 2, 2005
    Date of Patent: October 6, 2009
    Assignee: Hackforth GmbH
    Inventor: Heinrich Ückert
  • Patent number: 6976921
    Abstract: The invention relates to a rotationally symmetrical coupling comprising an annular hub made of a rigid material, which is surrounded by an outer ring made of a rubber-elastic material. The coupling also comprises an outer contouring, which is located on the outer diameter and which is provided for positively transmitting torques, whereby the outer ring is reinforced by an embedded, annular, rigid solid body. The aim of the invention is to achieve a quieter operation of a coupling of the aforementioned type and to better protect this coupling from becoming damaged. To these ends, the invention provides that the rubber-elastic material is silicone and that the annular, rigid solid body, on the outside, has a shape, which is similar to that of the outer contouring of the outer ring and which maintains, over the circumference, a nearly constant distance from the outer contouring of the outer ring. The rigid solid body is preferably comprised of a curved, metallic strip material having a constant thickness.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: December 20, 2005
    Assignee: Hackforth GmbH
    Inventors: Andreas Mehlan, Jürgen Walter
  • Patent number: 6896622
    Abstract: The invention relates to an elastic shaft coupling, comprising at least one torsion element, with an elastomer body as transfer element, to which connecting flanges are fixed. According to the invention, the axial shortening of the elastomer body, in such an elastic shaft coupling, at high revolutions, can be reduced, without producing the resilience thereof, whereby the elastomer body is encompassed by a circumferential support ring, which is exclusively bonded to the elastomer body.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: May 24, 2005
    Assignee: Hackforth GmbH
    Inventors: Jürgen Walter, Ulrich Falz
  • Patent number: 6623362
    Abstract: An elastic shaft coupling which as a transmission element comprises at least one torsion element with an elastically deformable elastomer body on which axial flange connections are fixedly mounted on the input and output sides. The axial width of the elastomer body increases radially from the inside towards the outside. To reduce or better distribute the local mechanical and thermal load on the elastomer body resulting from the dynamic load, the invention provides for the axial width of the elastomer body to increase radially from the inside to the outside more than proportionally, at least in sections.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: September 23, 2003
    Assignee: Hackforth GmbH
    Inventors: Jürgen Walter, Ulrich Falz
  • Patent number: 6582148
    Abstract: The invention relates to an elastic shaft coupling having at least one torsion element (1) which comprises at least one elastomer body (5) serving as a transmission element. Axial metallic connecting flanges (2) are mounted in a fixed manner, preferably by vulcanization, on the input and output sides of the elastomer body. In order to increase the transmittable power density and to improve the rubber-metal connection in the edge areas of the connecting flanges (2), the invention provides that the connecting flanges (2) axially project outward with regard to the elastomer body (5) from the plane of the connecting flange while forming an arch at least on the radially extending edges (2a, 3a) of the connecting flanges between the elastomer body (5) and the connecting flanges (2), the edges being formed on the outer edges of connecting flange segments (2) and/or on the inner edges of passages (3) in the connecting flange (2).
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: June 24, 2003
    Assignee: Hackforth GmbH
    Inventors: Jürgen Walter, Ulrich Falz