Patents by Inventor Sigmund D. Travis

Sigmund D. Travis 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).

  • Self ejecting drill chuck key
    Patent number: 4085943
    Abstract: A self-ejecting key device for drill chucks has a main body with a handle, a key element and a forward guide pin with a groove along one side for retaining a slidable ejector member. The groove is aligned with a bore that extends through the key element and main body. Retained within the bore is a coiled spring which is secured to a slidable ejector pin in the groove that projects outwardly from the side of the guide pin.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: April 25, 1978
    Assignee: C. R. Reichel Engineering Co. Inc.
    Inventor: Sigmund D. Travis