Patents by Inventor Paul J. Conniff

Paul J. Conniff 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).

  • Hydrostatic setting mechanism for a subterranean tool without rupture discs
    Patent number: 10060212
    Abstract: A hydrostatically set tool operates by pressure buildup on one side of a piston that builds up pressure to the same degree on the opposite side of the piston. There is a valve assembly on the opposite side of the piston that at a predetermined pressure on a high pressure side of the valve assembly allows the assembly to open to mix high pressure on the opposite side of the piston with pressure in an atmospheric or low pressure chamber. This reduces the pressure on one side of the piston and makes the piston move to set the tool. Optionally the piston can be urged to move with low pressure differential such as with sizing of the port leading into the atmospheric chamber so that piston bore warping is reduced from the low differential pressures.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: August 28, 2018
    Assignee: Baker Hughes, a GE company, LLC
    Inventor: Paul J. Conniff
  • Hydrostatic Setting Mechanism for a Subterranean Tool without Rupture Discs
    Publication number: 20160160594
    Abstract: A hydrostatically set tool operates by pressure buildup on one side of a piston that builds up pressure to the same degree on the opposite side of the piston. There is a valve assembly on the opposite side of the piston that at a predetermined pressure on a high pressure side of the valve assembly allows the assembly to open to mix high pressure on the opposite side of the piston with pressure in an atmospheric or low pressure chamber. This reduces the pressure on one side of the piston and makes the piston move to set the tool. Optionally the piston can be urged to move with low pressure differential such as with sizing of the port leading into the atmospheric chamber so that piston bore warping is reduced from the low differential pressures.
    Type: Application
    Filed: December 8, 2014
    Publication date: June 9, 2016
    Applicant: BAKER HUGHES INCORPORATED
    Inventor: Paul J. Conniff