Patents by Inventor Helmut Hoffmann

Helmut Hoffmann 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).

  • Patent number: 8770355
    Abstract: The invention relates to a brake disk having a face-end friction ring portion on which a brake disk cam provided with a cam bore is molded. In order to further develop the brake disk in such a manner that adequate safeties with respect to the permissible material values on brake disks for high-energy application cases are provided and material stresses in the region of the brake disk cam of the brake disk, which are caused through temperature differentials within the brake disk as a consequence of high braking energy inputs, are reduced, the brake disk cam includes two arm parts which extend spaced from each other from the face-end friction ring portion in the direction of the cam bore and converge in front of the cam bore.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: July 8, 2014
    Assignee: Faiveley Transport Witten GmbH
    Inventors: Heinz-Jurgen Gaspers, Helmut Hoffmann
  • Patent number: 8267435
    Abstract: A charge-air hose assembly includes a charge-air hose (2) for connecting to a pipe stub (4). The charge-air hose (2), in the assembled position, is pushed into the pipe stub (4) in such a way that overpressure occurring in the charge-air hose (2) presses the charge-air hose (2) radially outward against the radial inner wall (6) of the pipe stub (4). The charge-air hose (2) is assigned a latching device which, during the insertion of the charge-air hose (2) into the pipe stub (4), latches with the pipe stub (4) so as to axially fix the charge-air hose (2) to the pipe stub (4) in a predetermined axial position of the charge-air hose (2) relative to the pipe stub (4).
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: September 18, 2012
    Assignee: ContiTech MGW GmbH
    Inventors: Jörg Hellfeier, Hartmut Brill, Helmut Hoffmann, Peter Reichardt, Dieter Bamberger, Karl-Heinz Siebels
  • Publication number: 20100258392
    Abstract: The invention relates to a brake disk having a face-end friction ring portion on which a brake disk cam provided with a cam bore is moulded. In order to further develop the brake disk in such a manner that adequate safeties with respect to the permissible material values on brake disks for high-energy application cases are provided and material stresses in the region of the brake disk cam of the brake disk, which are caused through temperature differentials within the brake disk as a consequence of high braking energy inputs, are reduced, the brake disk cam includes two arm parts which extend spaced from each other from the face-end friction ring portion in the direction of the cam bore and converge in front of the cam bore.
    Type: Application
    Filed: July 15, 2008
    Publication date: October 14, 2010
    Applicant: FAIVELEY TRANSPORT WITTEN GMBH
    Inventors: Heinz-Jurgen Gaspers, Helmut Hoffmann
  • Publication number: 20100140923
    Abstract: A charge-air hose assembly includes a charge-air hose (2) for connecting to a pipe stub (4). The charge-air hose (2), in the assembled position, is pushed into the pipe stub (4) in such a way that overpressure occurring in the charge-air hose (2) presses the charge-air hose (2) radially outward against the radial inner wall (6) of the pipe stub (4). The charge-air hose (2) is assigned a latching device which, during the insertion of the charge-air hose (2) into the pipe stub (4), latches with the pipe stub (4) so as to axially fix the charge-air hose (2) to the pipe stub (4) in a predetermined axial position of the charge-air hose (2) relative to the pipe stub (4).
    Type: Application
    Filed: January 4, 2010
    Publication date: June 10, 2010
    Inventors: Jörg Hellfeier, Hartmut Brill, Helmut Hoffmann, Peter Reichardt, Dieter Bamberger, Karl-Heinz Siebels
  • Patent number: 5986075
    Abstract: The present invention relates to a process for desalting aqueous suspensions containing an organic diazonium compound and electrolytes containing Na ions, in which the aqueous suspension is passed through a semipermeable membrane.
    Type: Grant
    Filed: January 20, 1999
    Date of Patent: November 16, 1999
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: John C. DuBose, Andrew D. Johnson, Samuel Shaun Murphree, Edzard Tholema, Helmut Hoffmann, Wolfgang Zarges, Wolfgang Frank, Bettina Burkhardt
  • Patent number: 4472757
    Abstract: An electric capacitor particularly for use as a high frequency power capacitor, and provided with liquid cooling, the capacitor having separated metal layers as its plates and the metal layers being separated by a densely sintered ceramic dielectric body, one embodiment of which is generally pot-shaped. Heat generated in the capacitor is dissipated by cooling liquid which is directed by a jacket surrounding that one metal layer to pass over the metal layer and dissipate the heat. The metal layer is comprised of a silver frit. To avoid the metal layer being eroded by the cooling liquid, a layer of glaze, which is resistant to the cooling liquid and whose coefficient of expansion is similar to that of the dielectric body covers over the metal layer in contact with the cooling liquid.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: September 18, 1984
    Assignee: Draloric Electronic GmbH
    Inventors: Herman Schmauss, Alfred Zeitner, Helmut Hoffmann, Werner Wollenschlager, Heinz Schlegel
  • Patent number: 4106075
    Abstract: The invention concerns a densely sintered ceramic dielectric with a loss factor less than or equal to 1.times.10.sup.-3 and a substantially linear temperature dependence of the capacitance based on TiO.sub.2 and/or ZrO.sub.2, and/or the compounds of TiO.sub.2, ZrO, Nb.sub.2 O.sub.5 and/or Ta.sub.2 O.sub.5 with oxides of the alkali metals, alkaline earth metals or rare earth metals in the form generally used for the production of ceramic dielectrics.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: August 8, 1978
    Assignee: Draloric Electronic GmbH
    Inventors: Georg Baumann, Helmut Hoffmann
  • Patent number: 4088917
    Abstract: A method and apparatus for processing piezoelectric bodies to have a permanent polarization for use as electroacoustic transducers or the like are described. During the application of a constant polarizing electric field to a piezoelectric body, the surfaces of the body, which for example, might be in the shape of a disc, have applied thereto a surface pressure. A clamping device having smooth surfaces is used for this purpose.
    Type: Grant
    Filed: April 8, 1976
    Date of Patent: May 9, 1978
    Assignee: Siemens Aktiengesellschaft
    Inventors: Erwin Martin, Helmut Hoffmann, Otto Brunnert
  • Patent number: 3956368
    Abstract: The invention relates to a process for the production of guanidinium salts of aliphatic mercaptosulphonic acids by reacting S-isothiuronium betains with gaseous ammonia in an inert organic solvent.
    Type: Grant
    Filed: June 14, 1974
    Date of Patent: May 11, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Hoffmann, Carlhans Suling