Patents by Inventor Thomas C. Riggs

Thomas C. Riggs 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).

  • Patent number: 8974201
    Abstract: As described in detail below, the disclosed embodiments include a rotating compressor valve having stationary front and rear plates (e.g., guards) and a rotating plate configured to rotate relative to the stationary front and rear plates. The stationary front and rear plates and the rotating plate all include a plurality of slots which, when aligned, allow a process fluid (e.g., natural gas) to flow through the rotating compressor valve. In certain embodiments, the slots of the rotating plate include an arc radius that is smaller than an arc radius of the slots of the stationary front and rear plates.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: March 10, 2015
    Assignee: GE Oil & Gas Compression Systems, LLC
    Inventors: Spencer T. Oulman, Kyle W. Sembera, Omar M. Kabir, Thomas C. Riggs
  • Publication number: 20130220424
    Abstract: As described in detail below, the disclosed embodiments include a rotating compressor valve having stationary front and rear plates (e.g., guards) and a rotating plate configured to rotate relative to the stationary front and rear plates. The stationary front and rear plates and the rotating plate all include a plurality of slots which, when aligned, allow a process fluid (e.g., natural gas) to flow through the rotating compressor valve. In certain embodiments, the slots of the rotating plate include an arc radius that is smaller than an arc radius of the slots of the stationary front and rear plates.
    Type: Application
    Filed: February 23, 2012
    Publication date: August 29, 2013
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Spencer T. Oulman, Kyle W. Sembera, Omar M. Kabir, Thomas C. Riggs
  • Patent number: 7270107
    Abstract: A pre-combustion chamber for an engine is made more simply removable from the cylinder head by integrating the chamber design and not threading the assembly to the head. The assembly is provided as an integrated design using a seal that helps dissipate heat from the spark plug and a cover that is held down by flange bolts that extend into threaded bores into the head in a location more removed from the heat generated in the chamber. As a result the chamber is more simply installed and removed without damage to the head.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: September 18, 2007
    Assignee: Cameron International Corporation
    Inventor: Thomas C. Riggs
  • Patent number: 6513483
    Abstract: A pre-combustion chamber assembly for an internal combustion engine is disclosed having an inner housing having a receiver for receiving a spark plug and an inlet for fuel. A connector is provided for securing the pre-combustion chamber in a spark plug well of the internal combustion engine. An outer housing has a first end and a second end and extends around the inner housing, with a chamber being defined between the inner and outer housings. The outer housing is releasably retained around the inner housing so as to allow relative movement between portions of the inner and outer housings while maintaining the integrity of the chamber. A method of modifying an internal combustion engine and an internal combustion engine incorporating the pre-combustion chamber are also provided.
    Type: Grant
    Filed: February 7, 2001
    Date of Patent: February 4, 2003
    Assignee: Cooper Cameron Corporation
    Inventor: Thomas C. Riggs
  • Publication number: 20020104507
    Abstract: A pre-combustion chamber assembly for an internal combustion engine is provided. The pre-combustion chamber assembly has an inner housing defining a pre-combustion chamber, the housing having a receiver for receiving a spark plug and an inlet for fuel. A connector is provided for securing the pre-combustion chamber in a spark plug well of the internal combustion engine, the connector having a port for connecting the pre-combustion chamber with a combustion chamber of the internal combustion engine. An outer housing has a first end and a second end and extends around the inner housing, with a chamber being defined between the inner and outer housings. The outer housing is releasably retained around the inner housing so as to allow relative movement between portions of the inner and outer housings while maintaining the integrity of the chamber. A method of modifying an internal combustion engine and an internal combustion engine incorporating the pre-combustion chamber are also provided.
    Type: Application
    Filed: February 7, 2001
    Publication date: August 8, 2002
    Applicant: Cooper Cameron Corporation
    Inventor: Thomas C. Riggs
  • Patent number: 4355961
    Abstract: The invention comprises a control valve which is interposed between a hydraulically-operated fuel valve (for an engine) and a hydraulic fluid supply for regulating the operation (i.e, the opening and closing) of the fuel valve. The control valve has a housing-enclosed, sliding plunger which is spring-loaded to urge the plunger in a first direction in the housing, and which is translated in a second, opposite direction against the spring bias, by a contacting, rotating cam. Hydraulic fluid inlet and outlet ports are formed in the housing and are cyclically communicating and closed off from each other, for given periods of time, due to the translations of the plunger. The housing has an adjusting element operative for altering the translation of the plunger relative to the housing, to alter the given time periods and, as a consequence, the fuel valve is selectively and adjustably regulated thereby.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: October 26, 1982
    Assignee: Ingersoll-Rand Company
    Inventor: Thomas C. Riggs
  • Patent number: 3947160
    Abstract: The arrangement comprises an intermediate housing for a plural-rotor mainshaft of a rotary engine in which the housing is vertically split transverse to the shaft rotary axis, into two portions. Each housing portion, like the mainshaft itself, is of one-piece construction, the portions having interfaced circular bores in which to receive the mainshaft. Rotor journals integral with the mainshaft are eccentric for use with rotary pistons, and are dimensioned to fit through the bores. In addition, a large radial bearing journal, also integral with the shaft, carries a full sleeve-type bearing and is directly received by the bore formed in one housing portion; the journal and its bearing are directly supported by and wholly radially enclosed by only the one housing portion. Accordingly, none of the bearing support is overhung, and yet both housing portions are abutted and interfitted together to transmit loading therebetween.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: March 30, 1976
    Assignee: Ingersoll-Rand Company
    Inventors: Arthur L. Black, Thomas C. Riggs