Patents Assigned to Jonsson & Billquist Development AB
  • Patent number: 5249469
    Abstract: A pressure gauge is provided comprising a sensor housing (1) closed by a cover (7). The sensor housing (1) is connected to a tube (3) containing the pressure to be measured. The space defined by the sensor housing (1) and the cover (7) is hermetically divided by a sensor housing cover (9) in such a way that inside a front measurement volume (11) a pressure sensor means (15) is placed. This pressure sensor means has a substantially flat shape. It is connected to the interior walls of the front volume by means of tubes (23) which are slender or slim, that is have a small section in relation to the area of the pressure sensor means (15). The carrying means (23) are preferably realized as metal tubes and in their interior the electrical connections (31) for the pressure sensor means pass. By this construction the exterior surface of the whole of the pressure sensor means (15) will be subjected to the measuring pressure.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: October 5, 1993
    Assignee: Jonsson & Billquist Development AB
    Inventors: Staffan Jonsson, Ray Olsson