Patents by Inventor Ray D. Marvel

Ray D. Marvel 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: 4840618
    Abstract: The particular embodiment described herein as illustrative of one form of the invention incorporates a round elongated handle sized for holding in the fisted grip of a person. A shield is positioned on top of the handle and extends radially outwardly therefrom to an extent sufficient to substantially shield the fisted hand of a person gripping the handle. An opening in the center of the shield communicates with a cavity in the handle for receiving a test tube therein. When transferring fluids from a syringe to a test tube, one inserts the test tube into the cavity in the handle and then inserts a syringe needle into the upper end of the test tube with the other hand. If the person performing the operation were to miss the end of the test tube with the needle, the hand of the person holding the device holding the test tube would be shielded from the needle. A ridge on the outer peripheral edge of the shield will pervent a needle from sliding off the edge of the shield should the needle strike the shield.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: June 20, 1989
    Inventor: Ray D. Marvel