Patents Assigned to Joh. Winklhofer & Sohne GmbH and CO.KG
  • Patent number: 6855081
    Abstract: An articulated chain comprising chain links interconnected at chain hinges, with each chain hinge comprises a hinge pin and a hinge bearing surrounding said hinge pin, and the hinge pins are provided with a bonded layer on the outer circumferential surface thereof. The hinge bearings are produced from a sintered material, with the bottom of the borided layer, which faces the base material, being provided with teeth.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: February 15, 2005
    Assignee: Joh. Winklhofer & Sohne GmbH and CO.KG
    Inventor: Richard Koschig
  • Patent number: 6736255
    Abstract: It is the intention to improve a conveyor system for supplying small parts to a chain assembling unit, the system comprising a track system transporting the small parts, and a feed device loading the track system with the small parts. To this end the track system comprises at least two loading tracks which are loadable by the feed device with small parts, and at least one feed track which passes the small parts onwards to the chain assembling unit and communicates with at least one corresponding loading track, the number of the feed tracks being smaller than the number of the loading tracks, and the at least one feed track being selectively connectable to at least one other corresponding loading track for conveying the small parts.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: May 18, 2004
    Assignee: Joh. Winklhofer & Söhne GmbH & Co. KG
    Inventor: Heinz Mitzenheim
  • Patent number: 6490853
    Abstract: A method for joining a plate chain link is to be improved, in which at least one plate is connected to at least one bolt by way of a pressing and aligning process. This is achieved by the measures that the bolt is centered in relation to a main chain axis by the simultaneous active application of symmetrical clamping forces to the faces and the least one plate is pushed by a joining lift relative to the bolt into a position symmetrical to the main chain axis. Furthermore, the invention relates to a device for carrying out the method.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: December 10, 2002
    Assignee: Joh. Winklhofer & Söhne GmbH & Co. KG.
    Inventors: Gerhard Winklhofer, Dag Heinrich, Thomas Fink
  • Patent number: 6223515
    Abstract: A link chain having chain links interconnected at respective hinge points by a hinge bolt, at least one bearing bushing arranged on a hinge bolt, at least one roller arranged on said bearing bushing such that it is rotatable about the hinge bolt, and an axial retaining device attached to the hinge bolt and used for axially securing the bearing bushing and the roller. For reducing vibrations in the link chain, a bearing bushing is provided having an axial damping area on at least one end face area thereof, the damping area being formed integrally with the bearing bushing, and the bearing bushing being arranged such that the damping area rests against the axial retaining device.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: May 1, 2001
    Assignee: Joh. Winklhofer & Sohne GmbH & Co. KG
    Inventors: Richard Koschig, Peter Graemann, Peter Schulze
  • Patent number: 6196380
    Abstract: An apron-conveyor chain is to be improved, which comprises chain links interconnected at hinge points and transport plates arranged on at least one side of said chain links and provided with a flat transport surface. The hinge points are provided with at least one sleeve and one bolt, and said transport plates form an apron conveyor in common and are each firmly connected to a bolt included in a hinge point. The apron-conveyor chain is in particular characterized by the feature that each transport plate is firmly connected to two neighbouring bolts of two neighbouring hinge points.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: March 6, 2001
    Assignee: Joh. Winklhofer & Sohne GmbH & Co. KG
    Inventors: Toralf Teuber, Peter Grabmann
  • Patent number: 6196376
    Abstract: The present invention refers to a support device for applying a lateral guiding force in the case of side-arc link chains, comprising a side-arc link chain and a support element moving together with said side-arc link chain and supporting it laterally on the inner side of the chain arc. For providing a support device of the type cited at the start which requires much less constructional outlay and can be produced at a much more moderate price and which, in addition, requires little mounting space, the present invention is so conceived that the support element is defined by an endless traction means which is guided with the aid of deflection means and supported by guide means.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: March 6, 2001
    Assignee: Joh. Winklhofer & Söhne GmbH & Co. KG
    Inventors: Peter Grabmann, Dag Heinrich
  • Patent number: 5971135
    Abstract: A conveyor apparatus having a conveyor chain and at least one supporting arm used for attaching thereto objects which are to be conveyed. The supporting arm has one of its ends connected to the conveyor chain via an overload protection means. The overload protection means has a tilting joint which is provided between the supporting arm and the conveyor chain and permitting reversible tilting of the supporting arm relative to the conveyor chain in response to a predetermined load. In the structural design of the conveyor apparatus the tilting joint is acted upon by a helical tension spring.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: October 26, 1999
    Assignee: Joh. Winklhofer & Sohne GmbH & Co. KG
    Inventors: Dag Heinrich, Gerhard Winklhofer
  • Patent number: 5562198
    Abstract: In a hollow bolt link chain of a conveyor device, in which at least one adapter is provided for affixing a carrier of the chain, which is detachably secured in a hollow bolt with an adapter foot, the adapter foot comprises at its insertion end at least one locking element adjustable in elastically resetting fashion between a holding position and a pull-out position, which engages behind a counter-catch at the hollow bolt at least in positive locking fashion in the holding position. At least one locking element adjustable in elastically resetting fashion from a holding position spread away from the longitudinal axis of the adapter foot in the direction towards the longitudinal axis is disposed at the insertion end of the adapter foot in an adapter for the detachable fastening of a carrier to a hollow bolt link chain of a conveyor device.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: October 8, 1996
    Assignee: Joh. Winklhofer & Sohne GmbH & Co. KG
    Inventor: Richard Koschig