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| Number | Title | Issue Date |
| 7186030 | Expandable shaft assembly An expandable shaft assembly including an axially extending shaft with an axial axis, an extending shaft with an axial axis, an external dimension, at least one shaft end and a bore extending generally axially from the at least one shaft end. The shaft assembly also... | 03/06/2007 |
| 7165925 | Self adjusting, high strength, screw system A fastener system and method of inserting it, that includes a screw or bolt having two interleaved helical threads, which brackets or forms a groove for a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coi... | 01/23/2007 |
| 7073981 | Rock stabilizer A rock stabilizer includes a metal tube with a tapered distal end and a flanged proximal end capable of being positioned within a bore in a mine wall. A slit runs substantially the entire length and indentations are formed in the outer surface along the length adjac... | 07/11/2006 |
| 6932552 | Preloadable retainer A fastener comprises an anchor and a central pin. The anchor has a top plate to which a central leg is connected. At the free end of the central leg are two anchor arms that extend up and outward from the free end, forming an arrowhead shape. Each anchor arm has an ... | 08/23/2005 |
| 6910840 | Fastener A fastener comprises an anchor and a central pin. The anchor has a top plate to which a central leg is connected. At the free end of the central leg are two anchor arms that extend up and outward from the free end, forming an arrowhead shape. The anchor arms are fle... | 06/28/2005 |
| 6860691 | Self adjusting, high strength, screw system A faster system includes a screw or bolt having two interleaved helical threads, which bracket a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coil combination and the substrate into which the screw and h... | 03/01/2005 |
| 6835036 | Concrete anchor An expansion anchor comprises a stud having threads including a root, a land, and a taper extending between the root and the land and a helical member having a leading edge threadingly engageable with the threads, wherein the helical member is movable between an une... | 12/28/2004 |
| 6494657 | Self-adjusting, high strength, screw system A fastener system includes a screw or bolt having two interleaved helical threads which bracket a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coil combination and the substrate into which the... | 12/17/2002 |
| 6276883 | Self adjusting screw system A fastener system includes a screw or bolt which can be attached in a helicoil. The helicoil expands and torques by various means to maintain hold and purchase between the screw coil combination and the substrate into which the screw and helicoil are inse... | 08/21/2001 |
| 5820316 | Guide element for a cutting tool Guide element for a cutting tool having a location hole (20) in the tool shank (4) having an internal thread (16, 10), which has a threaded bolt (14) having an external thread that can be screwed into the internal thread (16, 10) and is spring mounted in ... | 10/13/1998 |
| 5316422 | Blind fastener A fastener which enables the attachment of an article to a panel having front and rear surfaces and an aperture formed therebetween, particularly in cases where access to the panel is limited to one side only. The fastener includes a stud having a head an... | 05/31/1994 |
| 4886405 | Wall mounting device A device for bolting an article to a wall board, using a pre-drilled hole in the wall, is disclosed. The device comprises a volt, and an anchoring portion threadedly mounted to the bolt. This anchoring portion is resiliently deformable in one direction wh... | 12/12/1989 |
| 4859127 | Spring wire fastener and method of using same A coiled spring wire fastener includes a first end for engaging with the head of a bolt, a midsection of a constant diameter and a second end portion of a conically, tapered shape. In an alternative embodiment, the coiled spring wire fastener includes an ... | 08/22/1989 |
| 4642008 | Expansion dowel An expansion dowel includes an axially elongated sleeve-shaped dowel body slit in the axial direction from the leading end. A spiral-shaped expansion body is located in the dowel body in the axially extending region of the slit. By axially displacing the ... | 02/10/1987 |
| 4474515 | Expansion fastener The utility of an expansion fastener including an externally threaded shaft having a head shaped so as to be capable of being engaged by a manipulative tool, a generally cylindrical longitudinally split sleeve located around the shaft, a nut threaded on t... | 10/02/1984 |
| 4291608 | Expansion dowel An expansion dowel consists of an axially extending dowel body with a spreading member at its leading end and an expansion member extending around the dowel body rearwardly of the spreading member. A helically arranged control cam surface is formed on the... | 09/29/1981 |
| 4205587 | Self-locking anchoring bolt A self-locking anchoring bolt provided with a shank portion to be fitted in a bolt hole, provided with an elongated locking element disposed in a correspondingly formed location which extends substantially helically in the bolt shank.... | 06/03/1980 |
| 4181060 | Helical anchor A helical anchor of the type in which a helical coil surrounds a connecting bolt in attachment with a nut element. Rotation of the connecting bolt causes the coil to expand radially outwardly into gripping engagement with a side wall into which the anchor... | 01/01/1980 |
| 4154140 | Expansion shield for anchoring a screw or a bolt in a hole in masonry, concrete or stone, and a tool for inserting a shield An expansion shield for anchoring a machine screw or bolt in a hole in masonry, concrete or stone comprises a strip-like blank of sheet helically wound around a shaft. One turn of the shield overlaps a previous turn. The blank in one end has an inwardly b... | 05/15/1979 |
| 4136599 | Plastic screw grommet A one-piece plastic screw grommet for use in mounting a screw relative to a blind bore located in a fibrous material. The grommet includes a shank portion and may have a laterally extending head at one end. The shank has a first diameter portion adjacent ... | 01/30/1979 |
| 4083289 | Plastic fastener A plastic fastener, for example, a one-piece plastic rivet, having a head and a bifurcated oval shank and expander means capable of axial movement within a tapered bore traversing the head and shank. Each portion of the shank has a longitudinally disposed... | 04/11/1978 |
| 4004486 | Quick release fastener A fastener assembly for use in the blind fastening of first and second parts having aligned apertures extending therethrough with the aperture in the second part being larger than the aperture in the first part. A stud member with a screw threaded shank i... | 01/25/1977 |
| 3935787 | Door handle anchor The embodiment of the invention disclosed herein is directed to a door handle anchor which can be placed behind the panel of a sheet metal door and has prongs formed thereon to extend through an aperture formed in the door. A threaded fastener is inserted... | 02/03/1976 |
