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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7363676 | Adjustable diameter cylindrical mechanism A pair of foundations held on a central rod disposed along an axis secure a number of connecting rods which, in turn, support portions of a cylinder oriented parallel to the axis. As the angle between the connecting rods and the central rod is adjusted, the cylinder... | 04/29/2008 |
| 5156507 | Expansible fastening device Disclosed is an expansible fastening device (10) for placement in a hole preformed in a base member for use in attaching a component part to the base using a conventional nut (24) and bolt (26). The fastening device includes a fastener body (12) having tw... | 10/20/1992 |
| 4983082 | Expansion anchor assembly An expansion anchor assembly to be secured in a borehole is made up of an expansion sleeve and an anchor rod. The expansion sleeve has a plurality of expansion sections arranged to be deflected radially outwardly by drawing an expansion cone on the front ... | 01/08/1991 |
| 4968200 | Expansion anchor assembly An expansion anchor assembly is made up of an expansion sleeve and an anchor rod. At one end, the expansion sleeve has a plurality of separate expansion parts radially deflectable about bending locations, by drawing an expansion cone on one end of the anc... | 11/06/1990 |
| 4673321 | Expansion dowel An expansion dowel includes an axially extending expansion sleeve and an expansion member rolled from a section of sheet metal. The sleeve has a leading end and a trailing end and the inside surface of the sleeve is threaded for an axially extending secti... | 06/16/1987 |
| 4537541 | Anchor bolt assembly A vibration-proof anchor bolt assembly which is insertable in a hole drilled in masonry for fastening a fixture to the surface thereof, the diameter of the hole being slightly larger than that of the bolt. The bolt is provided with an enlarged head that l... | 08/27/1985 |
| 4334813 | Device for fastening an object against a wall or the like The device for fastening an object to a wall or the like by a push-in mounting, comprises an externally threaded bolt, at one end of which a nut can be threadedly advanced, and on the other end which is at least partially conical and whose maximum diamete... | 06/15/1982 |
