Patents by Inventor Thomas Heidtmann

Thomas Heidtmann 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: 11801955
    Abstract: The present invention relates to a device for the production of bags (8) filled with infusible material having a base plate (50) which separates a drive side (54) from an operating side (52), where a bag-production device is provided on the operating side (52) in which a batch of the infusible material is placed onto the bag material (25) which is shaped into a tube and the tube sections are processed to form closed bags (8), where the bag production device is provided in a work space (68) between the base plate (50) and at least one protective door (56). In order to improve the cleanliness within the work space, the present invention proposes a ventilation device (74) for generating an air flow in the work space (68).
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: October 31, 2023
    Assignee: Teepack Spezialmaschinen GmbH & Co. KG
    Inventors: Holger Vetter, Thomas Heidtmann
  • Publication number: 20220258892
    Abstract: The present invention relates to a device for the production of bags (8) filled with infusible material having a base plate (50) which separates a drive side (54) from an operating side (52), where a bag-production device is provided on the operating side (52) in which a batch of the infusible material is placed onto the bag material (25) which is shaped into a tube and the tube sections are processed to form closed bags (8), where the bag production device is provided in a work space (68) between the base plate (50) and at least one protective door (56). In order to improve the cleanliness within the work space, the present invention proposes a ventilation device (74) for generating an air flow in the work space (68).
    Type: Application
    Filed: February 17, 2022
    Publication date: August 18, 2022
    Inventors: Holger Vetter, Thomas Heidtmann, Stefan Lambertz, Hans Knops
  • Patent number: 6591769
    Abstract: The invention relates to a device for adjusting a checking unit of a presser foot, used in a sewing or embroidery machine. A needle bar moves the presser foot towards a needle plate, using a spring which is connected in series. The checking unit intercepts the presser foot using a checking element of the unit, before contact is made with the work piece to be sewn and controls the movement of the presser foot until the latter touches the work piece. The checking element and the needle bar are both operated by a common drive and the bedding position of the checking element can be modified in relation to the needle plate.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: July 15, 2003
    Assignee: ZSK Stickmaschinen GmbH
    Inventors: Thomas Heidtmann, Bernd Kirch
  • Patent number: 5337551
    Abstract: A tube transport assembly is provided for a textile machine system in which tubes having yarn or the like wound thereon are transported to, and empty tubes are transported from, a textile machine. Two different transport apparatus are each operable to transport a different kind of tube support member along a respective endless transport path. In one aspect of the present invention, an alternating positioning device alternately positions the two types of tube support members and a tube transfer device is operable to transfer the tubes and full yarn packages from the type of tube support members on which they are initially supported to the other type of tube support members. In one embodiment of the tube transport assembly, the alternating positioning device is a rotatable annular disk having a plurality of tube support member retaining positions uniformly spaced annularly thereon.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: August 16, 1994
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Hans Grecksch, Thomas Heidtmann, Norbert Bohnen