Tool related patents are entered at datamp.org (Directory of American Tool and Machinery Patents) by a handful of volunteers. Below are the five most recently added patents. There is information about joining in on the fun at the bottom of http://www.datamp.org/ This page is automatically refreshed every six hours. As mentioned on the Patent Searching page, one of easiest ways to find a tool patent is to look for it in datamp. With any luck someone will have already found the patent you are looking for and entered it at datamp.org.