Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7374384 | Fasteners for securing pallet members together A fastener for use in the construction of pallets is provided which includes a head having a head diameter, a single elongate shank having a nominal shank diameter, and a plurality of rings extending outwardly from the shank. Each ring had a crest and a root, with t... | 05/20/2008 |
| 7179036 | Fastening arrangement employing thread-forming screw A fastening arrangement comprising a thread-forming lobular screw and a member defining a non-tapped pilot hole therein. The screw has a shaft and a head joined to a proximal end of the shaft, the shaft defining a plurality N of lobes circumferentially spaced about ... | 02/20/2007 |
| 7163366 | Screw with two types of threads A screw includes a first thread on the shank and located close to the point of the shank, and a second thread which is connected to the first thread and extends toward the head of the screw. Each of the first and second threads includes an upper flank and a lower fl... | 01/16/2007 |
| 7160073 | Tapping screw A tapping screw fastened to a subject member in which a thread portion formed in a shaft portion of the tapping screw is used to form a female screw thread in a prepared hole of the subject member. An angle of a thread ridge is approximately 30 degrees, a plurality ... | 01/09/2007 |
| 7056075 | Screw-type anchor A self-tapping masonry anchor includes an axial bore that is formed at one end and extends through a portion of the anchor. ... | 06/06/2006 |
| 6974289 | Pressure flank screw and fastening system therewith A male threaded fastening member is provided with depressions in at least one or several helix wraps of the thread adjacent the head, the depressions extending inwardly from an edge of the thread at least part way toward a shank of the male fastening member. In a fa... | 12/13/2005 |
| 4715757 | Attachment apparatus and method for attaching An apparatus which attaches a first device within a cavity of an anchor without using inserts, flanges, or adhesives is disclosed. Flexibility in positioning the device relative to the anchor is provided regardless of whether the anchor cavity or the devi... | 12/29/1987 |
| 4636121 | Holding screw A holding screw rotatable in an inward direction having means to prevent or retard rotational movement in the opposite direction. The screw device includes a conventional screw body having external helical threads to move the screw inwardly by rotating in... | 01/13/1987 |
| 4449874 | Self-threading bolt A threaded fastener capable of recutting damaged screw threads during installation in a threaded opening has an axial opening in its leading end intersecting a transverse opening whose ends extend through the screw threads of the fastener. The fastener is... | 05/22/1984 |
| 4046051 | Thread forming screw A thread forming screw has a tapering lead end from which helical threads extend with a uniform root diameter onto a cylindrical shank. Proceeding from the tip of the lead end, there are progressively higher discontinuous thread crests in the form of pyra... | 09/06/1977 |
| 4010671 | Wall construction There is provided an improved wall construction including a vertical mullion and a horizontal member. The horizontal member is provided with longitudinally extending screw splines. The members may be assembled in the known shear block method, or in a know... | 03/08/1977 |
| 3937119 | Masonry anchor device A screw type anchor device for securement into masonry structures. A sharp crested helical thread, preferably with tapering crest diameter, is formed along the shank and helical protuberances forming guide means are spaced along the shank between adjacent... | 02/10/1976 |
