Patents by Inventor Ronald C. Kettelkamp, Sr.

Ronald C. Kettelkamp, Sr. 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).

  • Adjustable guard rail stanchion member
    Patent number: 4666131
    Abstract: An adjustable guard rail stanchion member for use on pitched or flat roofs with clamping means to engage a rafter of a roof or elevated floor. Adjustable means are provided to assure a vertical position of a portion of the stanchion member yet allowing another portion to be angled to the pitch of the rafter. In addition the stanchion member is spaced outwardly of the roof or floor so as to not interfere with roofing operations.
    Type: Grant
    Filed: April 24, 1986
    Date of Patent: May 19, 1987
    Inventors: Ronald C. Kettelkamp, Sr., Maurice Shaffstall