Patents by Inventor Leslie A. Fryatt

Leslie A. Fryatt 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).

  • Powered conveyors
    Patent number: 4269305
    Abstract: In a powered conveyor comprising a frame, a plurality of article-supporting rollers mounted in the frame and a drive belt assembly for supplying driving power to the articles on the rollers, the invention provides that some at least of the belt guide pulleys act as control pulleys and for this purpose carry large diameter rings which are capable of being interposed between the belt and the pulley hub in order radially to displace the belt into driving engagement with an associated article-supporting roller.
    Type: Grant
    Filed: May 15, 1979
    Date of Patent: May 26, 1981
    Assignee: J. H. Fenner & Co. Limited
    Inventor: Leslie A. Fryatt
  • Seals
    Patent number: 4208059
    Abstract: A rotary lip seal comprises an annular member having two sealing lips. An annular space is defined between the two lips and baffle means are arranged to provide a partition across this space.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: June 17, 1980
    Inventor: Leslie A. Fryatt
  • Pulley assemblies
    Patent number: 4169530
    Abstract: For use primarily in a conveyor system wherein articles are required to be propelled along a predetermined path by driven belt means, the invention provides a pulley assembly having a rim member movable into and out of contact with the belt means responsive to a cam which is actuated by the propelled articles. The pulley assembly may itself directly drive the belt means or it may contact and thus drive the propelled articles or it may contact rollers in said predetermined path and upon which said articles rest.
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: October 2, 1979
    Assignee: J. H. Fenner & Co. Limited
    Inventor: Leslie A. Fryatt