Patents by Inventor Ronald E. Bates

Ronald E. Bates 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: 4432100
    Abstract: Herein is a disclosed a transparent safety visor which may be retrofitted to protective hardhat helmets. Such helmets typically consist of an inverted bowl defining a number of key receptor sites at intervals around its interior circumference, and a liner cap including a central crown and a number of struts radiating therefrom and terminating in keys adapted to be releasably locked to the receptor sites to maintain the liner cap and bowl in a fixed relationship. The visor is made of a flexible, transparent, generally rectangular plastic sheet, with at least a pair of slots in the sheet through which are inserted a corresponding number of liner cap keys prior to placement thereof in the receptor sites. The lower edge of the visor extends below the edge of the helmet to provide a gripping surface for user adjustment of the position of the visor, and the upper edge of the visor slides between the liner cap and the bowl when adjusted.
    Type: Grant
    Filed: April 16, 1982
    Date of Patent: February 21, 1984
    Inventor: Ronald E. Bates
  • Patent number: 4063730
    Abstract: A tennis swing practice device includes a cylindrical guide receptacle of somewhat larger inside diameter than the diameter of a tennis ball medially releasably bolted to the head of a tennis racket and having a longitudinally forwardly facing end opening. Passage restrictions are located in the receptacle proximate the end opening so as to necessitate a minimum longitudinal force on a tennis ball in the receptacle for the tennis ball to be ejected from the receptacle attendant to the swinging of the racket. The restriction may be the head of a bolt securing the receptacle to the racket head or opposite forwardly converging shoulders located at the receptacle opening. The longitudinal axis of the receptacle is parallel to the racket striking face and may be at an angle of between 0.degree. and 60.degree. to the racket longitudinal axis.
    Type: Grant
    Filed: June 25, 1976
    Date of Patent: December 20, 1977
    Assignee: Tennis-Tee, Inc.
    Inventor: Ronald E. Bates