Patents by Inventor Nelson E. Leatherman

Nelson E. Leatherman 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: 5722352
    Abstract: Apparatus for substantially reducing equine cribbing behavior, comprising: a collar that can be placed about the neck of a horse, and a control circuit carried by the collar for applying a shock to the horse; the control circuit comprising a first sensor that detects an equine characteristic related to cribbing activity and a second sensor that detects equine activity other than cribbing; the control circuit comprising a logic circuit for preventing the application of a shock to the horse in response to a detected equine cribbing characteristic when the second sensor detects equine activity other than cribbing.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: March 3, 1998
    Assignee: Nelson E. Leatherman
    Inventor: Nelson E. Leatherman
  • Patent number: 4214593
    Abstract: A device for monitoring esophageal pressure in patients comprises a nasogastric tube provided with an esophageal balloon cuff communicating through wallports with a secondary lumen that leads to an external connector tube through which continuous measurements of esophageal pressure can be made without interruption of the function of the nasogastric tube. The tube may include a tertiary lumen that serves to vent the major tube lumen at the distal end to prevent excessive vacuum from developing when suction is applied to the tube.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: July 29, 1980
    Assignee: Mallinckrodt, Inc.
    Inventors: Richard Imbruce, Nelson E. Leatherman