Patents by Inventor Bjorn Ekman

Bjorn Ekman 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).

  • Regulating device for pressure fluid actuated apparatus
    Patent number: 4242088
    Abstract: Improved actuator for a control valve especially useful for a compressed air-operated dentist's drill comprises a foot actuated roller connected to provide axial movement through a screw threaded connection to a spring-biased valve control element.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: December 30, 1980
    Assignee: Dental AB
    Inventor: Bjorn Ekman
  • Sterile package
    Patent number: 4042170
    Abstract: A sterile package of weldable plastic foil, has a sealing welding seam, joining two mutually opposite portions of said foil, interrupted by a disc shaped valve element of gas pervious material disposed between said portions and defining at least one through hole.
    Type: Grant
    Filed: May 5, 1976
    Date of Patent: August 16, 1977
    Assignee: AB Svenska Dental Instrument
    Inventors: Bjorn Ekman, Lars Tyrefors