Patents by Inventor Tom Lohkamp

Tom Lohkamp 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).

  • Apparatus using electronically-controlled valves
    Patent number: 9394897
    Abstract: The pumps and pressure controllers described herein aim to pump fluid in two directions, such as from a first port to a second port and vice versa. The pressure controllers aim to control pressure in a system or device, such as a test device, accurately and precisely at a variety of different pressure levels. Generally described, the pumps and pressure controllers described herein may include two or more control valves, which may be actuatable in such a manner so that the pump or pressure controller can switch between operating as a vacuum pump and operating as a compressor. In some embodiments, the pressure controllers may be able to adjust a pressure in the device by small increments thereby providing increased control of the pressure in the device over the prior art. Furthermore, the pressure controllers may be able to control the pressure of a system having low pressure levels.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: July 19, 2016
    Assignee: Fluke Corporation
    Inventors: Tom Lohkamp, Bill Stephens, Martin Gotch
  • APPARATUS USING ELECTRONICALLY-CONTROLLED VALVES
    Publication number: 20160003235
    Abstract: The pumps and pressure controllers described herein aim to pump fluid in two directions, such as from a first port to a second port and vice versa. The pressure controllers aim to control pressure in a system or device, such as a test device, accurately and precisely at a variety of different pressure levels. Generally described, the pumps and pressure controllers described herein may include two or more control valves, which may be actuatable in such a manner so that the pump or pressure controller can switch between operating as a vacuum pump and operating as a compressor. In some embodiments, the pressure controllers may be able to adjust a pressure in the device by small increments thereby providing increased control of the pressure in the device over the prior art. Furthermore, the pressure controllers may be able to control the pressure of a system having low pressure levels.
    Type: Application
    Filed: September 14, 2015
    Publication date: January 7, 2016
    Inventors: Tom Lohkamp, Bill Stephens, Martin Gotch
  • Apparatus using electronically-controlled valves
    Patent number: 9158308
    Abstract: The pumps and pressure controllers described herein aim to pump fluid in two directions, such as from a first port to a second port and vice versa. The pressure controllers aim to control pressure in a system or device, such as a test device, accurately and precisely at a variety of different pressure levels. Generally described, the pumps and pressure controllers described herein may include two or more control valves, which may be actuatable in such a manner so that the pump or pressure controller can switch between operating as a vacuum pump and operating as a compressor. In some embodiments, the pressure controllers may be able to adjust a pressure in the device by small increments thereby providing increased control of the pressure in the device over the prior art. Furthermore, the pressure controllers may be able to control the pressure of a system having low pressure levels.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 13, 2015
    Assignee: Fluke Corporation
    Inventors: Tom Lohkamp, Bill Stephens, Martin Gotch
  • Apparatus Using Electronically-Controlled Valves
    Publication number: 20120285554
    Abstract: The pumps and pressure controllers described herein aim to pump fluid in two directions, such as from a first port to a second port and vice versa. The pressure controllers aim to control pressure in a system or device, such as a test device, accurately and precisely at a variety of different pressure levels. Generally described, the pumps and pressure controllers described herein may include two or more control valves, which may be actuatable in such a manner so that the pump or pressure controller can switch between operating as a vacuum pump and operating as a compressor. In some embodiments, the pressure controllers may be able to adjust a pressure in the device by small increments thereby providing increased control of the pressure in the device over the prior art. Furthermore, the pressure controllers may be able to control the pressure of a system having low pressure levels.
    Type: Application
    Filed: May 13, 2011
    Publication date: November 15, 2012
    Inventors: Tom Lohkamp, Bill Stephens, Martin Gotch