Patents by Inventor David Bergstrom

David Bergstrom 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: 20240328462
    Abstract: A torque limiting coupling contains a first shaft, a second shaft and a coupling ring. The coupling ring contains a coupling sleeve with an inner surface and an outer surface. The coupling sleeve is arranged in the radial direction between the first shaft and the second shaft, such that the inner surface is in frictional contact with the first shaft and the outer surface is in frictional contact with the second shaft. The coupling sleeve is double-walled with an internal annular pressure oil chamber, configured in such a way, that the coupling sleeve increases its radial thickness when the oil chamber is filled with pressurized oil and thereby increases the pressure forces and thereby the friction between the surfaces and the shafts in order to allow torque transfer between the two shafts, and that the coupling sleeve transfers no torque, when the oil chamber is not filled with pressurized oil.
    Type: Application
    Filed: June 8, 2022
    Publication date: October 3, 2024
    Inventors: David Bergström, Andreas Albinsson
  • Publication number: 20240240673
    Abstract: A torque limiting coupling has a shaft, a shear plate fixedly connected to the shaft, and a coaxially disposed coupling ring. The coupling ring has a lateral surface in contact with the shaft and a double-walled section with an internal annular pressure fluid chamber. When the fluid chamber is filled with pressurized fluid, the radial thickness increases and increases the pressure and friction forces for a torque transfer between the coupling ring and the shaft. A shear tube closes the pressurized fluid chamber. A shear plate is configured to cut off a tip of the shear tube in order to open the pressure fluid chamber when the first shaft slips relative to the coupling ring. A central bolt affixes the shear plate to the shaft by pressing a conical bushing of the shear plate onto a conical connector of the shaft.
    Type: Application
    Filed: March 29, 2024
    Publication date: July 18, 2024
    Inventors: Jochen Thielen, David Bergström, Andreas Albinsson
  • Publication number: 20180355382
    Abstract: The present invention provides compositions and methods for utilizing a large capacity cloning vector (e.g., BAC) to carry a large exogenous genomic DNA (about 10-300 kb) flanked by a proximal and distal regions (10 kb) to efficiently insert into the genome of a cell in a CRISPR/Cas9-stimulated homologous recombination. Methods and compositions for microinjecting a large human gene into a mouse zygote to prepare a genetically modified mouse are also provided.
    Type: Application
    Filed: May 2, 2018
    Publication date: December 13, 2018
    Inventors: David Bergstrom, Tiffany Leidy-Davis
  • Patent number: 9186321
    Abstract: The present disclosure is directed to chemically-stable and pharmaceutically acceptable sildenafil oral spray formulations for the treatment of diseases such as pulmonary arterial hypertension and/or SSRI-induced sexual dysfunction, wherein the oral spray formulation has a pH of about 1.5 to less than 3.0. The present disclosure is also directed to methods for treating diseases such as pulmonary arterial hypertension and/or SSRI-induced sexual dysfunction.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: November 17, 2015
    Assignee: Suda Ltd.
    Inventors: David Bergstrom, Foye Opawale
  • Publication number: 20150051216
    Abstract: The present disclosure is directed to chemically-stable and pharmaceutically acceptable sildenafil oral spray formulations for the treatment of diseases such as pulmonary arterial hypertension and/or SSRI-induced sexual dysfunction, wherein the oral spray formulation has a pH of about 1.5 to less than 3.0. The present disclosure is also directed to methods for treating diseases such as pulmonary arterial hypertension and/or SSRI-induced sexual dysfunction.
    Type: Application
    Filed: December 4, 2012
    Publication date: February 19, 2015
    Applicant: SUDA LIMITED
    Inventors: David Bergstrom, Foye Opawale
  • Publication number: 20130143894
    Abstract: The present disclosure is directed to chemically-stable and pharmaceutically-acceptable sildenafil oral spray formulations for the treatment of male erectile dysfunction, wherein the oral spray formulation has a pH of about 1.5 to less than 3.0. The present disclosure is also directed to methods for treating male erectile dysfunction.
    Type: Application
    Filed: June 7, 2011
    Publication date: June 6, 2013
    Applicant: vadel Pharma Inc.
    Inventors: David Bergstrom, Foyeke Opawale
  • Publication number: 20110040266
    Abstract: Compositions of zolpidem, and methods for their manufacture and use for treating insomnia. The compositions are formulated as oral sprays for transmucosal absorption of zolpidem. The methods of treatment in some cases involve night-time dosing administration to achieve therapeutic zolpidem blood levels within 20 minutes or less, tapering off to less than 20 ng/ml within less than five hours, in some cases less than four hours, post dosing.
    Type: Application
    Filed: October 26, 2010
    Publication date: February 17, 2011
    Inventors: Frank E. Blondino, David Bergstrom, Foyeke Opawale
  • Publication number: 20080280947
    Abstract: Compositions of zolpidem, and methods for their manufacture and use for treating insomnia. The compositions are formulated as oral sprays for transmucosal absorption of zolpidem. The methods of treatment in some cases involve night-time dosing administration to achieve therapeutic zolpidem blood levels within 20 minutes or less, tapering off to less than 20 ng/ml within less than five hours, in some cases less than four hours, post dosing.
    Type: Application
    Filed: May 12, 2008
    Publication date: November 13, 2008
    Inventors: Frank E. Blondino, David Bergstrom, Foyeke Opawale
  • Publication number: 20050273994
    Abstract: A method for producing a single-clad or multiple-clad product includes providing a welded assembly comprising a cladding material disposed on a substrate material. Both the substrate material and the cladding material are individually selected alloys. At least a first edge of the cladding material of the welded assembly does not extend to a first edge of the substrate material and thereby provides a margin between the first edges. A material that is an alloy having hot strength greater than the cladding material is within the margin and adjacent the first edge of the cladding material. The welded assembly is hot rolled to provide a hot rolled band, and the material within the margin inhibits the cladding material from spreading beyond the edge of the substrate material during the hot rolling. In certain embodiments of the methods, the substrate material is stainless steel and the cladding material is nickel or a nickel alloy.
    Type: Application
    Filed: June 10, 2004
    Publication date: December 15, 2005
    Inventors: David Bergstrom, Kris Schott, Mark Tarhay