Patents by Inventor Heinrich Hofmann

Heinrich Hofmann 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).

  • Publication number: 20090177273
    Abstract: The present invention relates to a process for fabricating a porous coatings with controlled structure in the micro and nano-size domain. In particular, but not exclusively, it relates to a process for fabricating coatings with an anisotropic pore size distribution and to coatings obtained using such coatings. It describes in particular the use of ink-jet method to deposit in a controlled way such coatings. It also relates to porous coatings with controlled structure in the micro and nano-size domain. The coating has a thickness between 10 nanometers and 10 millimeters and its porosity is created in such a way that the pore size distribution is anisotropic. It finally describes objects covered with this coating.
    Type: Application
    Filed: May 16, 2007
    Publication date: July 9, 2009
    Inventors: Laurent-Dominique Piveteau, Heinrich Hofmann, Frederic Neftel
  • Publication number: 20090154860
    Abstract: The invention relates to a tapered roller bearing comprising at least one conical outer roller track, at least one conical inner roller track and tapered rollers which are arranged in a radial manner between the roller tracks and about the longitudinal central axis of the tapered roller bearing. The tapered rollers respectively comprise a conical first covering surface for carrying out an effective radial connection towards the outside in the rolling contact with the inner roller track and for carrying out an effective radial connection towards the inside in the rolling contact with the outer roller track and the central lines of the tapered rollers intersect in a common intersecting point on the longitudinal central axis.
    Type: Application
    Filed: November 11, 2005
    Publication date: June 18, 2009
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Johannes De Boer, Horst Doeppling, Bernhard Wilm
  • Patent number: 7547147
    Abstract: A wheel bearing unit (1) is embodied in a four-rowed angular contact ball bearing form.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: June 16, 2009
    Assignee: Fag Kugelfischer AG
    Inventors: Peter Niebling, Heinrich Hofmann, Darius Dlugai, Jens Heim, David Ilgert
  • Publication number: 20090098178
    Abstract: The present invention relates to a process for manufacturing a porous coating with structures in the micro or nano-size domain characterized by the following steps: -providing a support having a surface, -depositing on said surface one mono-layer of temporary particles, -depositing a coating on said temporary particles in such a way that the thickness of said coating is less than the particle diameter, -eliminating said temporary particles and thereby obtaining a porous coating, the pores of said coating corresponding to the spaces previously occupied by the temporary particles and at least a pail of the pores communicating with the external environment, -applying a coating fixation step, characterized by the fact that it furthermore comprise a filling step where said pores are at least partially filled with a liquid or solid substance. The invention also concerns a coating and an object which can be obtained with this process.
    Type: Application
    Filed: September 15, 2006
    Publication date: April 16, 2009
    Inventors: Heinrich Hofmann, Frederic Neftel, Laurent-Dominique Piveteau
  • Publication number: 20090097793
    Abstract: The radial rolling bearing has an outer bearing ring, an inner bearing ring, and spherical rollers arranged between bearing rings. The spherical rollers have two flat side faces arranged parallel to one another. The spherical rollers are retained with uniform spacing to one another in the peripheral direction by a bearing cage. The spherical rollers have a width between their side faces of approximately 70% of the diameter of their spherical basic shape. The running faces of the rollers roll in two groove-shaped raceways which are formed in the inner side of the outer bearing ring and in the outer side of the inner bearing ring. At least one of the axial rims which delimit the groove-shaped raceways is reduced in radial height such that the radial bearing can be equipped with an increased number of spherical rollers in an axial assembly process.
    Type: Application
    Filed: December 9, 2006
    Publication date: April 16, 2009
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doppling, Georg Goppelt
  • Publication number: 20090081122
    Abstract: The injectable formulation for treatment by hyperthermia comprises a liquid carrier and heat-generating superparamagnetic iron oxide nanoparticles having a mean diameter not greater than 20 nm. Said injectable formulation is able to form in-situ a hyperthermic solid or semi-solid implant upon contact with a body fluid or tissue. Said hyperthermic solid or semi-solid implant may be useful for treating a tumor or a degenerative disc disease by hyperthermia.
    Type: Application
    Filed: May 23, 2005
    Publication date: March 26, 2009
    Applicants: UNIVERSITE DE GENEVE, ECOLE POLYTECHNIQUE FEDERAL DE LAUSANNE (EPFL), HOPITAUX UNIVERSITAIRES DE GENEVE
    Inventors: Daniel Rufenacht, Eric Doelker, Olivier Jordan, Mathiew Chastellain, Alke Petri-Fink, Heinrich Hofmann
  • Publication number: 20080310786
    Abstract: The invention relates to a radial antifriction bearing which substantially consists of an outer bearing ring and of an inner bearing ring as well as of a multitude of rollers, arranged between the bearing rings and held by a bearing cage. The rollers are configured in the form of spherical disks that each have two parallel lateral surfaces which are symmetrically flattened from a basic spherical shape. The bearing cage according to the invention is characterized by having cage pockets in which the rollers are axially guided between the bearing rings via two low-friction point contacts between the center areas of their lateral surfaces and the longitudinal webs of the cage pockets. The rollers are configured to have a defined degree of freedom for tilt movements exerted at an angle to the running direction and a defined degree of freedom for self-adjustment to the pressure angle of the radial antifriction bearing.
    Type: Application
    Filed: December 5, 2006
    Publication date: December 18, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doppling, Andreas Bohr, Rainer Eidloth
  • Patent number: 7465102
    Abstract: The invention relates to a cold-formed bearing ring (2) and a wheel bearing unit (1) provided with a bearing ring (2). A radial ring groove (16) is formed on the bearing ring (2).
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: December 16, 2008
    Assignee: Schaeffler KG
    Inventors: Peter Niebling, Heinrich Hofmann, Darius Dlugai, Jens Heim, Roland Langer, Horst Doppling, Wolfgang Steinberger
  • Publication number: 20080304781
    Abstract: The invention relates to a radial rolling bearing, especially a single-row deep groove rolling bearing, which substantially consists of an outer bearing ring and of an inner bearing ring as well as of a multitude of rollers, arranged between the bearing rings and held at uniform distances from one another in the peripheral direction by a bearing cage which is assembled from two ring halves. The rollers of the radial rolling bearing are configured in the form of spherical disks that each have two parallel lateral surfaces which are symmetrically flattened from a basic spherical shape and which roll off in two groove-type raceways with their faces. Said raceways are incorporated into the inner face of the outer bearing ring and into the outer face of the inner bearing ring. The bearing cage according to the invention is characterized by having individual cage pockets for each roller, said pockets encircling the roller on a reference line.
    Type: Application
    Filed: December 5, 2006
    Publication date: December 11, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doppling, Andreas Bohr, Rainer Eidloth
  • Publication number: 20080303339
    Abstract: The invention relates to a wheel hub having a central section and having a radial section which radially adjoins said central section, having a bearing section which projects axially from the central section for holding a wheel bearing and having an axially opposite holding section for holding a brake disk and a wheel rim, wherein holes for holding wheel bolts are formed in the radial section. In order to obtain a particularly light wheel hub which can withstand all operating loads and offers a reliable contact face for a brake disk under all operating conditions, it is provided that the wheel hub has recesses at least between some holes, which recesses extend completely through the wall of the radial section of the wheel hub, and that stiffening ribs are formed between the respective recesses which stiffening ribs axially thicken the radial section between the recesses.
    Type: Application
    Filed: December 9, 2006
    Publication date: December 11, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Peter Niebling, Robert Plank, Heinrich Hofmann, Horst Doeppling
  • Publication number: 20080296965
    Abstract: The invention relates to a wheel hub having a central section and a radial section which is radially connected to the central section, a bearing section which axially protrudes from the central section and is used to receive a wheel bearing, and an axially opposing receiving section for receiving a brake disk and a wheel rim. Holes for receiving wheel nuts are formed in the radial section. In order to produce an especially light wheel hub that can withstand all operating loads and provides a brake disk with a secure abutment surface under all operating conditions, the wheel hub has recesses at least between some holes, the recesses fully penetrating the wall of the radial section of the wheel hub, and at least one reinforcing means is embodied on the radial end of the wheel hub.
    Type: Application
    Filed: November 2, 2006
    Publication date: December 4, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doeppling, Peter Niebling, Robert Plank
  • Patent number: 7458727
    Abstract: The invention relates to a seal arrangement for sealing off at least one radial interspace between at least one bearing ring which can rotate and at least one rotationally fixed bearing ring. The seal arrangement is provided with at least a first carrier, the first carrier carrying at least one resilient seal and being fixed to a rotationally fixed bearing ring, and a second carrier, the second carrier being fixed to the bearing ring that can rotate and carrying at least one encoder. The encoder has an outwardly oriented circumferential surface in the shape of a truncated circular cone.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: December 2, 2008
    Assignee: Schaeffler KG
    Inventors: Peter Niebling, Jens Heim, Heinrich Hofmann, Darius Dlugai, Roland Langer
  • Publication number: 20080267551
    Abstract: The radial antifriction bearing has an outer bearing ring, an inner bearing ring and roller bodies, which are arranged between the bearing rings, are held at uniform distances from one another in the peripheral direction by a bearing cage. The roller bodies are discs that each have two parallelly arranged lateral surfaces which are symmetrically flattened from a spherical basic shape. In order to prevent edge stresses between the discs and the raceways, at least the raceway in the inner bearing ring, on its outer edge areas, transition into a logarithmically decreasing profile.
    Type: Application
    Filed: June 27, 2006
    Publication date: October 30, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doeppling, Robert Plank, Arbogast Grunau
  • Publication number: 20080265660
    Abstract: The invention relates to a wheel hub having a central section and a radial section which is radially connected to the central section, a bearing section which axially protrudes from the central section and is used to receive a wheel bearing, and an axially opposing receiving section for receiving a brake disk and a wheel rim. Holes for receiving wheel nuts are formed in the radial section. In order to produce an especially light wheel hub that can withstand all operating loads and provides a brake disk with a secure abutment surface under all operating conditions, the wheel hub has recesses at least between some holes, the recesses fully penetrating the wall of the radial section of the wheel hub.
    Type: Application
    Filed: November 2, 2006
    Publication date: October 30, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doeppling, Peter Niebling, Robert Plank
  • Publication number: 20080249616
    Abstract: The present invention relates to a process for manufacturing a porous coating with structures in the micro or nano-size domain characterized by the following steps: -providing a support having a surface, -depositing on said surface one mono-layer of temporary particles, -depositing a coating on said temporary particles in such a way that the thickness of said coating is less than the particle diameter, -eliminating said temporary particles and thereby obtaining a porous coating, the pores of said coating corresponding to the spaces previously occupied by the temporary particles and at least a part of the pores communicating with the external environment, -applying a coating fixation step, characterized by the fact that said temporary particles are deposited on said surface in such a way that, after particle deposition, more than 50% of the temporary particles are in contact with a maximum of two adjacent particles and otherwise are separated by an empty space.
    Type: Application
    Filed: September 15, 2006
    Publication date: October 9, 2008
    Inventors: Heinrich Hofmann, Frederic Neftel, Laurent-Dominique Piveteau
  • Publication number: 20080212912
    Abstract: The invention relates to a radial roller bearing which is embodied as a single-grooved grooved ball bearing. The bearing bodies are embodied as spherical disks having two symmetrical, parallel lateral surfaces from a spherical base shape.
    Type: Application
    Filed: March 9, 2006
    Publication date: September 4, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doeppling, Robert Plank
  • Patent number: 7407045
    Abstract: A wheel bearing having fixed part accommodating the brake caliper. The fixed part of the wheel bearing is connected to the wheel carrier by connecting elements. At least one projection is integrated with the fixed part, the wheel carrier or the connecting element. The projection transmits to the wheel carrier at least the torque acting in the fixed part during braking.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: August 5, 2008
    Assignee: Fag Kugelfischer AG
    Inventors: Heinrich Hofmann, Jens Heim, Peter Niebling, Horst Masuch
  • Publication number: 20080166078
    Abstract: The invention relates to a sealing arrangement (2) that seals at least one radial intermediate space (21) between at least one inner bearing ring (3) and at least one outer bearing ring (5). Said sealing arrangement (2) comprises at least one first support (17) that supports at least one elastic seal (18) and a second support (19) which supports at least one encoder (10) located outside the intermediate space (21). The encoder (10) is radially oriented towards at least one sensor (14) that is disposed above the encoder (10) in a radially outward direction.
    Type: Application
    Filed: August 20, 2004
    Publication date: July 10, 2008
    Inventors: Peter Niebling, Jens Heim, Heinrich Hofmann, Darius Dlugai, Roland Langer
  • Publication number: 20080166082
    Abstract: The multiple-row angular contact antifriction bearing has an outer bearing ring, an inner bearing ring, and roll bodies, which are arranged at least in two rows next to one another between the bearing rings. The roll bodies are ball discs having two lateral surfaces that are symmetrically flattened from a spherical basic shape whose raceways are arranged inside the bearing rings, abutting against one another so that the respectively adjacent roll bodies of each row have their lateral surface pointing toward one another and arranged directly next to one another on a transversal axis situated at a right angle to the pressure angle axes. These lateral surfaces also provide mutual guide surfaces.
    Type: Application
    Filed: June 27, 2006
    Publication date: July 10, 2008
    Applicant: SCHAEFFLER KG
    Inventors: Heinrich Hofmann, Horst Doeppling, Robert Plank, Arbogast Grunau
  • Patent number: 7362200
    Abstract: The invention relates to a seal arrangement for sealing off at least one radial interspace between at least one bearing ring which can rotate and at least one rotationally fixed bearing ring. The seal arrangement is provided with at least a first carrier, the first carrier carrying at least one resilient seal and being fixed to a rotationally fixed bearing ring, and a second carrier, the second carrier being fixed to the bearing ring that can rotate and carrying at least one encoder. The encoder has an outwardly oriented circumferential surface in the shape of a truncated circular cone.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: April 22, 2008
    Assignee: FAG Kugelfischer AG
    Inventors: Peter Niebling, Jens Heim, Heinrich Hofmann, Darius Dlugai, Roland Langer