Patents by Inventor James E. Preston

James E. Preston 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).

  • Depth selecting spool device
    Patent number: 3991475
    Abstract: A spool wherein line pay out is limited to a selected length by a pin that s retractable from one or more loops previously formed in the line and extending through a spool flange opening. A detented thumb wheel is eccentrically connected to the pin for retraction thereof.
    Type: Grant
    Filed: December 5, 1975
    Date of Patent: November 16, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Steven F. Segrest, James E. Preston