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| Number | Title | Issue Date |
| 7374495 | Locking nut and bolt system with enhanced locking The locking nut and bolt system includes an elongated locking unit, mounted in a nut and operative with a specially configured groove bolt. The locking unit includes a plurality of at least three tines, asymmetrically located, which protrude tangentially and general... | 05/20/2008 |
| 7313993 | Feeding mechanism for a microtome A feed device (1) for a microtome, in particular for a cryostat microtome, for setting the cut thickness of the specimen (2) to be sectioned, is described. In order to set the cut thickness, either the cutting knife or the specimen holder (3) is... | 01/01/2008 |
| 7244085 | Fastener assembly A fastener assembly includes a grommet having an enlarged bulbous body and a cylindrical extension projecting therefrom, the projection and body defining axially aligned openings therethrough. The cylindrical projection is configured to retain a washer on the outsid... | 07/17/2007 |
| 7234906 | Threaded insert for fasteners A threaded insert for providing stronger threads to a parent material. The threaded insert includes a bushing portion having male threads on the external surface and female threads within an internal bore. The threaded insert also includes keys which lock the thread... | 06/26/2007 |
| 7227434 | Tuning screw assembly The present invention relates to a tuning screw assembly comprising a sleeve (100) with internal threads for engaging a tuning screw (200) having external threads. The sleeve comprises a first threaded portion (32) which is axially displaced in ... | 06/05/2007 |
| 7192233 | Looseness preventive nut The present invention has been made to solve the above problems, and accordingly an object thereof is to provide a looseness preventive nut which does not loosen even if vibrations are applied, and can be used as a single nut. In at least a first embodiment, the inv... | 03/20/2007 |
| 7189251 | Open helical organic tissue anchor having recessible head and method of making the organic tissue anchor The invention relates to a tissue anchor which is an open helix of biocompatible material having a slope of from 0.5 to 10 turns per centimeter, a length from 3 to 75 millimeters, a diameter of from 1.5 to 11 millimeters, and an aspect ratio of from about 3 to about... | 03/13/2007 |
| 7147413 | Precision cemented carbide threading tap A precision cemented carbide threading tap is designed for use in precision tool holders in synchronous high speed tapping. The precision tap includes a fully cylindrical shank without the aid of squares, flats or other notches. The precision tap further includes a ... | 12/12/2006 |
| 7112142 | Method of cold forming a self-attaching female fastener element A method of cold forming a self-attaching female fastener (20) which includes deforming a fastener blank (120) having an annular pilot, (122) an annular flange (128) surrounding the pilot and a groove (132) in the flange having cyl... | 09/26/2006 |
| 7112143 | Thread former or tap Cold thread forming tap or screw tap with a shaft, said shaft having a chuck portion at the one end and a forming or cutting profile portion on the other end, the forming or cutting profile portion being realised as a separate profile element and being fixable centr... | 09/26/2006 |
| 7011584 | Self-attaching female fasteners and method of forming female fastener elements A method of forming a female fastener including rolling a body portion strip having a midportion and flange portions on opposed sides of the midportion, piercing spaced openings through the midportion, cutting the strip to length between the openings, cold forming a... | 03/14/2006 |
| 6972137 | Process and apparatus for the application of fluoropolymer coating to threaded fasteners A process and apparatus are provided for the application of a fluoropolymer coating to the threads of an internally threaded fastener. The fastener has a body and a threaded bore extending to opposing ends of the body to define opposing first and second openings in ... | 12/06/2005 |
| 6908395 | Lock nut member A threaded locking beam nut having a plurality of locking beams configured such that the inside edge surface of each locking beam has a radially inwardly angled surface thereby forming substantially a V-shaped channel between adjacent beams. ... | 06/21/2005 |
| 6840866 | Method for producing a nut, screw tap for the performance of the method, and a nut produced according to the method A method of producing a nut having a drive area and a clamping area, and a screw tap for performing the method. A bore hole running through the clamping and drive areas is produced in a cylindrical manner. The screw tap is screwed into the cylindrical bore until a p... | 01/11/2005 |
| 6296573 | Self-locking internally threaded fastener and method of manufacture The present invention is directed to an internally threaded prevailing-torque type self-locking fastener which employs a patch of fused thermoplastic material as the locking element and which satisfies the functional torque requirements of both IFI 100/10... | 10/02/2001 |
| 6213885 | Castellated flange nut A combined castellated and flange nut has a flange with a flat or conical underside, a clamping section with a conical internal thread and several axially parallel recesses, and a torque receiving second section between the clamping section and the flange... | 04/10/2001 |
| 5954456 | Torque nut for mine roof bolt assembly A torque nut for a mine roof or rock bolt intended for use with a multi-component, rapid curing resin that is mixed by rotation of the bolt through the torque nut includes a nut body having a threaded bore including threads of uniform lead and threads of ... | 09/21/1999 |
| 5700199 | Method for sizing a lock nut A method for making a lock nut engagable and retainable about a threaded shaft wherein a body member having a bore is threaded for receiving a threaded shaft, and at least a portion of the bore is deformed to provide threaded shaft engaging means engagabl... | 12/23/1997 |
| 5499893 | Flexible lock nut and method of manufacturing A low profile lock nut for receiving a threaded bolt therein including a body portion having a threaded axial bore extending therethrough with first and second opposite ends, a crown member for providing a predetermined degree of flexibility, at least in ... | 03/19/1996 |
| 5282698 | Threaded fastener, method of fabrication thereof and method of supporting a mine roof using such a fastener A threaded fastener and method of fabrication thereof wherein the fastener or nut includes a first portion having external, wrench-engaging surfaces and a central, through bore, internally threaded for at least a portion of its length from a base surface.... | 02/01/1994 |
| 5201686 | Process and apparatus for producing a lock nut In production of a lock nut used for fastening in cooperation with a bolt, a tubular material of a polygonal transverse cross section is machined into a crude block integrally made up of an angled main body and a truncated cone having a common, circular c... | 04/13/1993 |
| 5086532 | Methods and apparatus for forming fasteners and threaded connections The present invention is a method of forming on a fastener body by relative rotary and axial movement of a thread forming tool and the body, a thread having a pitch which changes progressively through a plurality of turns, and an apparatus for progressive... | 02/11/1992 |
| 5014411 | Method of forming a locking nut and locked threaded connection A locking nut is provided by forming a straight cylindrical bore through a body, forming a tap with uniform teeth, the tips of which taper at a shallow angle toward one end of the tap, and tapping said bore with said tap so as to produce a thread having a... | 05/14/1991 |
| 4984319 | Method of manufacturing a laminated nut having cage with nested fingers The method of manufacture and product by process of a laminated nut comprising a plurality of conical spring discs or spring washers and a cage for receiving and holding the spring discs in a stacked, aligned relationship to define a central opening threa... | 01/15/1991 |
| 4927307 | Patch-type self-locking screw fasteners Thermoplastic polymer locking elements are formed on threaded fasteners to provide a range of self-locking torque characteristics. The thermoplastic resins are of the type that crystallize during cooling from the molten state. The crystallizable polymers ... | 05/22/1990 |
| 4891244 | Method and apparatus for making self-locking fasteners A method of making locking threaded fasteners having on the threaded surfaces thereof locking patch material formed by the accumulation of fused thermoplastic resin particles. The fasteners are advanced through a heating zone followed by an application zo... | 01/02/1990 |
| 4826376 | Lock nut and method for making same A lock nut arrangement formed of a first and second generally C-shaped nut member which are joined together in a manner allowing limited axial movement and free rotation relative to one another about the axis were two members were initially threaded to ce... | 05/02/1989 |
| 4815920 | Lock nut with synthetic resin threading A lock nut of the present invention comprises a metal nut base body and a synthetic resin portion, an internally threaded portion having a diameter smaller than that of an internally threaded portion of the nut base body and extending therefrom being form... | 03/28/1989 |
| 4805288 | Method for making and using a locking beam nut A threaded locking beam nut 20 in which each of a plurality of beams 22 is configured such that confronting side walls 27 and 28 of adjacent beams diverge outwardly away from each other. Any debris located between that confronting side walls of adjacent b... | 02/21/1989 |
| 4692077 | Self-locking nut with rocking anti-reversing pin A self-locking nut has an annular body, an axial threaded bore, and a hexagonal exterior periphery. A small bore is drilled through the body parallel to the threaded bore adjacent to an apex of two peripheral flat surfaces. An L-shaped locking pin has a b... | 09/08/1987 |
| 4682924 | Self-locking nut device and method A self-locking nut has an annular body, an axial threaded bore, and a hexagonal exterior periphery. A small bore is drilled through the body parallel to the threaded bore adjacent to an apex of two peripheral flat surfaces. An L-shaped locking pin has a b... | 07/28/1987 |
| 4680823 | Method of making a self-locking blind fastener In a blind fastener (20) of the kind comprising a tubular nut (22) having a shank (28) with a head (30) at one end and a tapered nose (32) at the other end, a headed bolt (24) threadedly engaged in the bore (34) of the nut (22), and an expansible sleeve (... | 07/21/1987 |
| 4669141 | Method of making a threaded insert The present invention relates to a method of making a threaded insert, a tool for carrying out the said method and the insert thus obtained which presents the form of a cylindrical tube provided with an external thread and an internal thread, and with a p... | 06/02/1987 |
| 4653970 | Quarter-turn fastener A quick action fastener suitable for fastening panels or the like in face-to-face contact, including a pierce nut adapted to be secured within one of the panels and a male stud inserted through the other panel and into a through-hole in the nut. The nut i... | 03/31/1987 |
| 4624024 | Method for the manufacture of a self-locking nut In a self-locking nut comprising a nut body having first and second end surfaces and a threaded hole opening onto these surfaces, at least a first turn of the thread of the hole immediately adjacent the first end surface of the nut is squashed axially tow... | 11/25/1986 |
| 4603446 | Method of making lock nuts A method of making loosening preventing nuts wherein a nut is cut down circularly on one end side to form a crown-shaped part, this crown-shaped part is cut as inclined in the opposite angle parts and is compressed in the axial direction with a die to be ... | 08/05/1986 |
| 4589155 | Method for making a nut for a blind fastener A three piece blind fastener of the kind comprising a tubular nut having a head at one end and a tapered nose at the other end, an expansible sleeve, and a headed bolt threadedly engaged with the nut for forcing the sleeve on to the nose of the nut to for... | 05/20/1986 |
| 4547104 | Tap A self-locking fastener includes a male member, such as a bolt, having a standard, helical, male thread of constant diameter which is deformed by the special female locking threads of a female member, such as a nut. The female threads are defined by leadi... | 10/15/1985 |
| 4545104 | Method of forming a fatigue resistant threaded connection A fatigue resistant threaded connection includes a nut having two threads which are aligned axially but turned relative to one another about their common axis through an angle great enough to cause development of large axial forces between the screw and n... | 10/08/1985 |
| 4472095 | Locking fastener This invention provides a locking fastener in which a nut is provided with symmetrical axial slots extending inwardly from one end, a sleeve surrounds the nut and has ribs in the slots for engaging the thread of a threaded shank received in the nut, and a... | 09/18/1984 |
