Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7014406 | Anti-strip-out fastener A fastener includes an axial shank and a clamping face extending radially from the shank. A plurality of serrations are formed on the clamping face and extend radially from a shank periphery to an outer periphery of the clamping face. The shank periphery is axially ... | 03/21/2006 |
| 6908270 | Self-locking bolt A self-locking bolt has a head with a bearing surface and a threaded part extending from the bearing surface and provided with an external thread of a pitch P for fastening to a first member when the head and threaded part are rotated in a fastening direction. There... | 06/21/2005 |
| 6905110 | Finished-stair-tread adapter for a modular railing system A modular railing system supports a plurality of rails in vertically-spaced configuration. The railing system includes a plurality of baluster units arranged between rail sets to support the rails. The baluster units include a plurality of rail supports grouped into... | 06/14/2005 |
| 6722830 | Fastener driving head A fastener is formed of an axially extending shaft (2) and a driving head on the end directed away from the setting direction, and has on its underside or first side (9) for the prevention of unintended loosening, a plurality of webs (12) extend... | 04/20/2004 |
| 6082942 | Electrical connection terminal assembly and tilt washer An electrical terminal clamping assembly of the character that will simultaneously accommodate and securely grip one or more conductor wires of substantially different diameters. The assembly includes a threaded terminal screw and a uniquely configured ge... | 07/04/2000 |
| 5827028 | Electrical connection terminal assembly and tilt washer An electrical terminal clamping assembly of the character that will simultaneously accommodate and securely grip one or more conductor wires of substantially different diameters. The assembly includes a threaded terminal screw and a uniquely configured ge... | 10/27/1998 |
| 5797581 | Apparatus for positioning and mounting fixtures An apparatus for positioning and mounting fixtures is described. At least one ring for fitted insertion into a fixture to be mounted is provided. A disc having an opening for receiving a fastening device is provided for each ring. The fastening device is ... | 08/25/1998 |
| 5746560 | Fastener having torque-absorbing ribs A faying plate having a clearance hole is fastened to a tapping plate having a tapping hole by a fastener having a shank with a tapered tip and with a self-tapping thread. The shank, which defines an axis, is adapted to tap a complementary thread around t... | 05/05/1998 |
| 5718610 | Cable clamp terminal for a circuit interrupter A cable clamp terminal for use with an electrical apparatus is provided, the cable clamp terminal including a terminal block having a threaded hole defined therein. An intermediate screw and an upper screw are disposed in the threaded hole, whereby the in... | 02/17/1998 |
| 5658108 | Electrical connection terminal assembly and tilt washer An electrical terminal clamping assembly of the character that will simultaneously accommodate and securely grip one or more conductor wires of substantially different diameters. The assembly includes a threaded terminal screw and a uniquely configured cl... | 08/19/1997 |
| 5518352 | Relief screw An improved relief screw is provided for installing a wallboard panel to a stud, which consists of a flat head made of an inverted rectilinear slant height frustrum portion and a straight thin cylindrical portion. The straight thin cylindrical portion is ... | 05/21/1996 |
| 5470183 | Electrical connection terminal assembly and tilt washer An electrical terminal clamping assembly of the character that will simultaneously accommodate and securely grip one or more conductor wires of substantially different diameters. The assembly includes a threaded terminal screw and a uniquely configured cl... | 11/28/1995 |
| 5441417 | Electrical grounding stud An electrical grounding connector, electrical grounding connector assembly, and a method of attaching an electrical grounding connector and electrical grounding connector assembly to an electrically conductive panel is disclosed. The grounding connector a... | 08/15/1995 |
| 5249882 | Self-tapping screw A shape of the head part of the screw is improved and performance of insertion of the screw when punched and performance of fastening of the screw when seated as well as a finishing treatment upon completion of the fastening against a fastened member are ... | 10/05/1993 |
| 5217339 | Non-seating plate/fastener assembly An improved plate/fastener assembly includes an elongated fastener having a first set of threads adjacent the tip and a second set of threads adjacent the head. The first set of threads has a diameter smaller than that of the second. The fastener is emplo... | 06/08/1993 |
| 5215206 | Drum closure assembly A closure ring assembly for securing a cover in sealed relation over the open top of a storage drum container in which a split ring is closed by tightening a headed tie bolt between a pair of laterally spaced lugs fixed to the ring on opposite of the spli... | 06/01/1993 |
| 5207588 | Electrical grounding stud An electrical grounding connector, electrical grounding connector assembly, and a method of attaching an electrical grounding connector and electrical grounding connector assembly to an electrically conductive panel is disclosed. The grounding connector a... | 05/04/1993 |
| 5183359 | Rotary fastener with anti-strip-out nibs A torque-absorbing rotary threaded fastener for joining metal panels has a stripping torque sufficiently in excess of its driving torque to ensure that it will be relatively unlikely to be stripped when mechanically driven home. The fastener has a clampin... | 02/02/1993 |
| 5073074 | Set screw This invention relates to a set screw comprising a shank having external threads and a work-engaging end portion integrally formed at one end of the shank. The work-engaging end portion has a frustohemispherical outer surface comprising a plurality of cir... | 12/17/1991 |
| 5018921 | Locking screw for modular framework A locking screw is disclosed having a shank and a frustoconical head with a cavity therein and a knurled annular end surface portion encircling the cavity. The locking screw is disposed within the arm of a joint connecting member which arm is inserted in ... | 05/28/1991 |
| 4930960 | Mounting arrangement for electrical wiring devices having non-metallic mounting strap A mounting screw for mounting an electrical wiring device having non-metallic components, to an electrical outlet box and combination of root electrical wiring device and screw. The screw includes a head and a shank, with a lip projecting downwardly from ... | 06/05/1990 |
| 4842463 | Vibration resistant fasteners A self-locking fastener having a bearing surface comprising a plurality of sets of serrations arranged to penetrate a workpiece such that while a resistance to the loosening of the fastener from the workpiece is created the marring of the workpiece surfac... | 06/27/1989 |
| 4820235 | Threaded fastener An improved threaded fastener is provided with a shank, a head connected to the shank, and a thread form on the shank terminating below the head. A plurality of lugs are provided above at least a portion of the thread form and are circumferentially dispos... | 04/11/1989 |
| 4812095 | Threaded fastener A threaded fastener is provided having a head for accommodating a tool for rotating the fastener. A plurality of ribs culminating in teeth are provided under the head for engaging the material into which the fastener is inserted, each rib and tooth having... | 03/14/1989 |
| 4808050 | Vibration resistant fasteners A self-locking fastener having a bearing surface comprising a plurality of sets of serrations arranged to penetrate a workpiece such that, while a resistance to the loosening of the fastener from the workpiece is created, the marring of the workpiece surf... | 02/28/1989 |
| 4797022 | Fastener and fabrication method therefor An improved fastener provides axially extending teeth on a narrow shoulder adjacent the fastener head. The teeth bite into sheet material, and are particularly useful in biting into the surface of a thin sheet which is fastened to a thicker sheet material... | 01/10/1989 |
| 4764068 | Knurled cup-point set screw A set screw having a novel cup-point for engagement with a shaft or rod. The cup-point has knurling on a portion of its outer circumferential surface and is provided with a smooth frustoconical surface portion adjacent the knurling such that, in use, the ... | 08/16/1988 |
| 4741654 | Spider washer head fasteners A fastener having a body defining an axis of rotation extending downwardly from the body and formed integrally therewith is provided with a flange extending radially and downwardly from the body. The flange is slotted to define a plurality of deformable t... | 05/03/1988 |
| 4735535 | Locknut having a single-turn thread A locknut having a single-turn thread for securing electrical fittings, threaded conduit and the like to electrical junction boxes and the like is disclosed. The locknut comprises a generally cylindrical portion, a flange portion attached to the cylindric... | 04/05/1988 |
| 4671716 | Locking screw for the adjustable connection of a hinge strap The locking screw for the adjustable connection of a hinge strap to a base plate of a hinge has an external thread, with which the locking screw is screwed into a corresponding threaded hole in the hinge flap. The end face of the bolt portion of the locki... | 06/09/1987 |
| 4178470 | Insulator for electrical conductors and method of stringing such conductors on insulators This disclosure is directed to an insulator for clamping and holding an electrical conductor above the ground for aerial power distribution and transmission. The insulator includes a body member, first jaw means integral with one end of the body member, s... | 12/11/1979 |
| 4165673 | Metal stamped and formed screw An improved metal stamped and formed screw is disclosed. The subject screw is stamped and formed from continuous web of metal stock to form a plurality of screws joined by a carrier strip. The thus formed strip of screws can be machine applied to prebored... | 08/28/1979 |
| 4157725 | Fastener and captive frusto-conical washer assembly There is disclosed a fastener assembly including a fastener or screw member having a head portion and an externally threaded body portion, and an improved novel washer design pre-assembled thereon and held in captive relation by the external thread form. ... | 06/12/1979 |
| 4140870 | Cable grounding system An improved fastener assembly system for grounding multiconductor, shielded cables. The assembly includes a saddle-shaped stud device and a preassembled nut and clamping washer. The clamping washer including a conical spring section and downwardly extendi... | 02/20/1979 |
| 4094352 | Fasteners having toothed bearing surfaces A self-locking fastener for a threaded joint having an end portion with a plurality of teeth in an annular array arranged to indent a coacting surface of a workpiece, to resist loosening. The teeth have individual top bearing surfaces which comprise disco... | 06/13/1978 |
| 4055208 | Locking fastener device A rotary threaded fastener and twisted tooth lock washer assembly providing a ratchet-type locking action due to the inter-engagement of the twisted teeth on the lock washer and cogs formed on the bearing surface of the threaded fastener. The teeth are co... | 10/25/1977 |
| 4034788 | Fastener assembly A fastener assembly for use in securing one member to another includes a bolt and a washer telescoped onto the bolt. The washer is formed with a central protruding section and an integral annular flange extending radially outward from the base of the prot... | 07/12/1977 |
| 4033243 | Container fastener system There is disclosed a novel fastener assembly for use in attaching a composite panel section or the like to a frame section. The fastener assembly comprises a first member for engagement in a bore formed in said frame section, said member including an enla... | 07/05/1977 |
| 4031936 | Preassembled spring washer fastener unit A locking fastener unit including a spring washer preassembled to a rotary fastener member with mounting means having an axis disposed eccentrically to the axis of the thread convolutions so that retrograde motion of these threaded fastener units is resis... | 06/28/1977 |
| 4022262 | Sealing locknut The sealing locknut is of the type commonly used for securing a conduit to an electrical junction box and is provided with a plurality of angular prongs or teeth about the circumference thereof adapted to bite into the metal of the junction box to obtain ... | 05/10/1977 |
