Patents Assigned to Ashcroft, Inc.
  • Pressure measurement
    Patent number: 7047811
    Abstract: Pressure measurement may be achieved by using a pressure-conveyance media that responds to externally applied pressure to convey pressure to a pressure sensor. With the conveyance of pressure, the pressure measurement may be accomplished by determining a pressure of the pressure-conveyance media, determining a temperature of the pressure-conveyance media, and determining pressure externally exerted on the pressure-conveyance media based one the pressure of the pressure-conveyance media and the temperature of the pressure-conveyance media.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: May 23, 2006
    Assignee: Ashcroft Inc.
    Inventors: David L. Sherman, Tyler J. Bessette, David McCuen, Donald D. McIntosh
  • Fluid measurement
    Patent number: 7039530
    Abstract: Techniques for fluid measurement include the ability to introduce a vibration to a container wall and to detect the vibration after the vibration has propagated at least partially around the container wall. Based on the detection of the vibration, the techniques also include the ability to determine a fluid state.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: May 2, 2006
    Assignee: Ashcroft Inc.
    Inventors: John H. Bailey, Jeffrey C. Adams, Rudolf Kren, Armand E. Halter
  • Liquidless seal connection
    Patent number: 7036382
    Abstract: A pressure instrument may include a seal connection connecting a pressure gauge to a process. A pressure sensor located in a base of the seal connection is in data communication with the pressure gauge that is spaced apart from the pressure sensor. Embodiments are particularly applicable on sanitary seal connections or where a low measuring range or high accuracy is required. Embodiments can include, for example, digital pressure gauges, pressure transducers and transmitters with any seal connection.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: May 2, 2006
    Assignee: Ashcroft, Inc.
    Inventors: David L. Sherman, Tyler J. Bessette