Patents by Inventor Peter Doetterl

Peter Doetterl 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: 11428276
    Abstract: The present invention relates to a freewheel (2) having a first race (16), a second race (18), a clamping gap (20) formed between the first and second race (16, 18), at least one clamping element (30) in the clamping gap (20) and a pre-tensioning device (32) for pre-tensioning the clamping element (30) in a clamping position inside the clamping gap (20), wherein the pre-tensioning device (32) has a spring element (34) supported indirectly or directly on the first race (16). The pre-tensioning device (32) further has a spring support frame (36) that can be moved in relation to the first race (16), in which spring support frame the spring element (34) is arranged.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: August 30, 2022
    Assignee: BorgWarner Inc.
    Inventors: Tobias Kaufhold, Hans Jürgen Hauck, Friedrich Philipp Brezger, Oliver Groneberg, Florian Schneider, Peter Dötterl
  • Patent number: 11415192
    Abstract: The present invention relates to a spring package (2) for use in a clutch and/or in a transmission, comprising a first supporting ring (4), a second supporting ring (6) which is arranged spaced apart (parallel) from the first supporting ring (4) in the axial direction, and a plurality of coil springs (8) arranged between the first supporting ring (4) and the second supporting ring (6) in distributed manner across the circumference thereof, wherein at least one of the supporting rings (4, 6) is formed from a sheet-metal strip (22) which is stamped and then bent into a ring shape and the ends of which are permanently connected to each other.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: August 16, 2022
    Assignee: SCHERDEL INNOTEC FORSCHUNGS-UND ENTWICKLUNGS-GMBH
    Inventors: Peter Doetterl, Franz Andritzky, Alexander Schraml
  • Publication number: 20210372490
    Abstract: The present invention relates to a freewheel (2) having a first race (16), a second race (18), a clamping gap (20) formed between the first and second race (16, 18), at least one clamping element (30) in the clamping gap (20) and a pre-tensioning device (32) for pre-tensioning the clamping element (30) in a clamping position inside the clamping gap (20), wherein the pre-tensioning device (32) has a spring element (34) supported indirectly or directly on the first race (16). The pre-tensioning device (32) further has a spring support frame (36) that can be moved in relation to the first race (16), in which spring support frame the spring element (34) is arranged.
    Type: Application
    Filed: May 28, 2021
    Publication date: December 2, 2021
    Inventors: Tobias Kaufhold, Hans Jürgen Hauck, Friedrich Philipp Brezger, Oliver Groneberg, Florian Schneider, Peter Dötterl
  • Publication number: 20200191223
    Abstract: The present invention relates to a spring package (2) for use in a clutch and/or in a transmission, comprising a first supporting ring (4), a second supporting ring (6) which is arranged spaced apart (parallel) from the first supporting ring (4) in the axial direction, and a plurality of coil springs (8) arranged between the first supporting ring (4) and the second supporting ring (6) in distributed manner across the circumference thereof, wherein at least one of the supporting rings (4, 6) is formed from a sheet-metal strip (22) which is stamped and then bent into a ring shape and the ends of which are permanently connected to each other.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 18, 2020
    Inventors: Peter DOETTERL, Franz ANDRITZKY, Alexander SCHRAML
  • Patent number: 9091315
    Abstract: The invention relates to a wave spring (2) which comprises a spring strip (4) which is coiled in a substantially circular-ring-shaped manner and, over the circumference, describes a wavy line which oscillates about a radial reference plane and has wave crests (6) and wave troughs. The ends of the circular-ring-shaped spring strip (4) are connected by means of a weld seam (10) which is arranged in a low-tension region of the wavy line of the spring strip (4) between a wave crest (6) and an adjacent wave trough (8).
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: July 28, 2015
    Assignee: Scherdel Innotec Forschungs—Und Entwicklungs—GmbH
    Inventor: Peter Doetterl
  • Publication number: 20140048991
    Abstract: The invention relates to a wave spring (2) which comprises a spring strip (4) which is coiled in a substantially circular-ring-shaped manner and, over the circumference, describes a wavy line which oscillates about a radial reference plane and has wave crests (6) and wave troughs. The ends of the circular-ring-shaped spring strip (4) are connected by means of a weld seam (10) which is arranged in a low-tension region of the wavy line of the spring strip (4) between a wave crest (6) and an adjacent wave trough (8).
    Type: Application
    Filed: February 1, 2012
    Publication date: February 20, 2014
    Applicant: SCHERDEL INNOTEC FORSCHUNGS-UND ENTWICKLUNGS-GMBH
    Inventor: Peter Doetterl