Patents by Inventor James L. McCracken

James L. McCracken 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: 5492160
    Abstract: A mortise and tenon generating system 10 having a removable tenon template 12 that attaches to the work piece. A router 26 utilizing a router bit 18 with a bearing collar 30 is guided so that the bearing collar 30 circumferentially contacts a guide edge 54 on the tenon template 12 and machines the tenon 36 out of the work piece 18. A router jig 16 with a tilting table 100 having a machining opening 118 is provided for supporting the router 26 and receiving the router bit 28. The router jig 16 also includes a clamp assembly 98 with a rotatable guide member 168 for receiving the work piece. The tilting table 100 and rotatable guide member 168 allow the work piece to be oriented at a variety of angles with respect to the router bit 28, for the creation of angled and compound angled tenons and/or mortises.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: February 20, 1996
    Inventor: James L. McCracken