Patents by Inventor Ditmar Clasen

Ditmar Clasen 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: 10822893
    Abstract: A tong includes a frame having jaws configured to engage a tubular and a tong control assembly disposed on the frame. The tong control assembly includes a housing connected to the frame, a shutoff switch, and a toggle lever located at a suitable position on the housing, whereby the toggle lever is configured to be operated while the shutoff switch is depressed, and wherein the toggle lever is configured to control at least one of: a rotational speed of the jaws and a rotational direction of the jaws. A method of operating a tong includes clamping a first tubular using first jaws of a tong, clamping a second tubular using second jaws of the tong, rotating the first tubular relative to the second tubular, and controlling a rotational speed of the first tubular using a toggle lever disposed on a frame of the tong.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: November 3, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Georg Zimbelmann, Ditmar Clasen, Bjoern Thiemann
  • Patent number: 10760359
    Abstract: A tong includes a gear ring powered by a motor assembly, the gear ring having a plurality of ramps formed on an inner surface thereof and a brake plate rotationally independent of the gear ring, the brake plate having a gripping assembly for interacting with the ramps to grip a tubular. Also included is a brake assembly for preventing rotation of the brake plate, the brake assembly including an adjustable brake band for applying friction to the brake plate and at least one brake pad made of braking material disposed on an outer surface thereof in the area of contact with the brake band for reducing friction between the brake plate and the brake band. In one embodiment, the braking material is bronze.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: September 1, 2020
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Ditmar Clasen, Martin Helms, Bjoern Thiemann
  • Publication number: 20200072002
    Abstract: A tong includes a frame having jaws configured to engage a tubular and a tong control assembly disposed on the frame. The tong control assembly includes a housing connected to the frame, a shutoff switch, and a toggle lever located at a suitable position on the housing, whereby the toggle lever is configured to be operated while the shutoff switch is depressed, and wherein the toggle lever is configured to control at least one of: a rotational speed of the jaws and a rotational direction of the jaws. A method of operating a tong includes clamping a first tubular using first jaws of a tong, clamping a second tubular using second jaws of the tong, rotating the first tubular relative to the second tubular, and controlling a rotational speed of the first tubular using a toggle lever disposed on a frame of the tong.
    Type: Application
    Filed: November 8, 2019
    Publication date: March 5, 2020
    Inventors: Georg ZIMBELMANN, Ditmar CLASEN, Bjoern THIEMANN
  • Publication number: 20200018129
    Abstract: A tong includes a gear ring powered by a motor assembly, the gear ring having a plurality of ramps formed on an inner surface thereof and a brake plate rotationally independent of the gear ring, the brake plate having a gripping assembly for interacting with the ramps to grip a tubular. Also included is a brake assembly for preventing rotation of the brake plate, the brake assembly including an adjustable brake band for applying friction to the brake plate and at least one brake pad made of braking material disposed on an outer surface thereof in the area of contact with the brake band for reducing friction between the brake plate and the brake band. In one embodiment, the braking material is bronze.
    Type: Application
    Filed: July 11, 2018
    Publication date: January 16, 2020
    Inventors: Ditmar CLASEN, Martin HELMS, Bjoern THIEMANN
  • Patent number: 10472906
    Abstract: A tong includes a frame having jaws configured to engage a tubular and a tong control assembly disposed on the frame. The tong control assembly includes a housing connected to the frame, a shutoff switch, and a toggle lever located at a suitable position on the housing, whereby the toggle lever is configured to be operated while the shutoff switch is depressed, and wherein the toggle lever is configured to control at least one of: a rotational speed of the jaws and a rotational direction of the jaws. A method of operating a tong includes clamping a first tubular using first jaws of a tong, clamping a second tubular using second jaws of the tong, rotating the first tubular relative to the second tubular, and controlling a rotational speed of the first tubular using a toggle lever disposed on a frame of the tong.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: November 12, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Georg Zimbelmann, Ditmar Clasen, Bjoern Thiemann
  • Publication number: 20190100970
    Abstract: A tool coupler includes a first component having a tubular body and a locking member and a second component. The second component includes a housing having an opening for receiving the tubular body; a locking ring having a latch; and an axial channel; a recess for receiving the locking member, wherein the latch is positioned in the channel to retain the locking member in the recess.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: Christian MUELLER, Ditmar CLASEN, David GEISSLER
  • Publication number: 20190055796
    Abstract: A tong includes a frame having jaws configured to engage a tubular and a tong control assembly disposed on the frame. The tong control assembly includes a housing connected to the frame, a shutoff switch, and a toggle lever located at a suitable position on the housing, whereby the toggle lever is configured to be operated while the shutoff switch is depressed, and wherein the toggle lever is configured to control at least one of: a rotational speed of the jaws and a rotational direction of the jaws. A method of operating a tong includes clamping a first tubular using first jaws of a tong, clamping a second tubular using second jaws of the tong, rotating the first tubular relative to the second tubular, and controlling a rotational speed of the first tubular using a toggle lever disposed on a frame of the tong.
    Type: Application
    Filed: August 21, 2017
    Publication date: February 21, 2019
    Inventors: Georg Zimbelmann, Ditmar Clasen, Bjoern Thiemann
  • Patent number: 9068406
    Abstract: The present invention generally relates to an apparatus for positioning a tool at a well site. The apparatus includes a first arm rotationally connected to a guide on a column. The apparatus further includes a second arm rotationally connected to the first arm. The second arm is also connected to a tool attachment member at a pivot point, wherein the pivot point is offset from the centerline of the tool. Additionally, the apparatus includes a flexible tension member having one end operatively connected to the guide and another end connected to the tool attachment member at a location closer to the centerline of the tool than the pivot point, wherein the flexible tension member is configured to maintain the tool in a specific orientation around the pivot point during the positioning operation. In a further aspect, a method of positioning a tool at a wellsite is provided.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: June 30, 2015
    Assignee: Weatherford Technology Holdings, LLC
    Inventors: Ditmar Clasen, Martin Liess, Martin Helms
  • Publication number: 20110120730
    Abstract: The present invention generally relates to an apparatus for positioning a tool at a well site. The apparatus includes a first arm rotationally connected to a guide on a column. The apparatus further includes a second arm rotationally connected to the first arm. The second arm is also connected to a tool attachment member at a pivot point, wherein the pivot point is offset from the centerline of the tool. Additionally, the apparatus includes a flexible tension member having one end operatively connected to the guide and another end connected to the tool attachment member at a location closer to the centerline of the tool than the pivot point, wherein the flexible tension member is configured to maintain the tool in a specific orientation around the pivot point during the positioning operation. In a further aspect, a method of positioning a tool at a wellsite is provided.
    Type: Application
    Filed: November 16, 2010
    Publication date: May 26, 2011
    Inventors: Ditmar Clasen, Martin Liess, Martin Helms