Patents by Inventor Rodney Earl Lancaster

Rodney Earl Lancaster 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).

  • Injector head for coiled tubing systems
    Patent number: 9840881
    Abstract: An injector head used in coiled tubing systems including at least two opposed counter-rotating chain loops having a first end and a second end, the chain loops having a chain. The injector head further includes a fixed drive sprocket disposed at the first end of a chain loop and a floating sprocket disposed at the second end of the chain loop. In the injector head, there is a force applied to the floating bottom sprocket to maintain the chain loop at a desired chain tension. Additionally, the injector head includes a tension cylinder that automatically maintains the chain loop at the desired chain tension.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: December 12, 2017
    Assignee: STEWART & STEVENSON, LLC
    Inventor: Rodney Earl Lancaster
  • INJECTOR HEAD FOR COILED TUBING SYSTEMS
    Publication number: 20150330161
    Abstract: An injector head used in coiled tubing systems including at least two opposed counter-rotating chain loops having a first end and a second end, the chain loops having a chain. The injector head further includes a fixed drive sprocket disposed at the first end of a chain loop and a floating sprocket disposed at the second end of the chain loop. In the injector head, there is a force applied to the floating bottom sprocket to maintain the chain loop at a desired chain tension. Additionally, the injector head includes a tension cylinder that automatically maintains the chain loop at the desired chain tension.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 19, 2015
    Inventor: Rodney Earl Lancaster
  • Injector head for coiled tubing systems
    Patent number: 9091129
    Abstract: An injector head used in coiled tubing systems including at least two opposed counter-rotating chain loops having a first end and a second end, the chain loops having a chain. The injector head further includes a fixed drive sprocket disposed at the first end of a chain loop and a floating sprocket disposed at the second end of the chain loop. In the injector head, there is a force applied to the floating bottom sprocket to maintain the chain loop at a desired chain tension. Additionally, the injector head includes a tension cylinder that automatically maintains the chain loop at the desired chain tension.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: July 28, 2015
    Assignee: Stewart & Stevenson, LLC
    Inventor: Rodney Earl Lancaster
  • Injector Head For Coiled Tubing Systems
    Publication number: 20120247787
    Abstract: An injector head used in coiled tubing systems including at least two opposed counter-rotating chain loops having a first end and a second end, the chain loops having a chain. The injector head further includes a fixed drive sprocket disposed at the first end of a chain loop and a floating sprocket disposed at the second end of the chain loop. In the injector head, there is a force applied to the floating bottom sprocket to maintain the chain loop at a desired chain tension. Additionally, the injector head includes a tension cylinder that automatically maintains the chain loop at the desired chain tension.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 4, 2012
    Applicant: Stewart & Stevenson, LLC
    Inventor: Rodney Earl Lancaster