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| Number | Title | Issue Date |
| 4826358 | Device for anchoring in and/or reinforcing hard materials A device for anchoring in and/or reinforcing hard materials, such as stone, concrete and the like, is described. The device consists of a continuous body, made in one piece, designed for insertion axially into a mounting hole in said materials and which h... | 05/02/1989 |
| 4691889 | Joint construction and overhead hanger A support leg (14) is attached to a ceiling structure (10) by means of a threaded stud (12) which mates with a threaded opening (18) in an insert (16) which is swage connected to the upper end of the support leg (14). A flat bar (20) is attached to the lo... | 09/08/1987 |
| 4673320 | Anchor dowel assembly An anchor dowel assembly includes an axially elongated sleeve with window-like openings extending through its wall transversely of the axial direction. Locking members are positionable within the window-like openings for displacement radially outwardly fr... | 06/16/1987 |
| 4644444 | Clamping means, and modules and units including clamping means Heat dissipation from electronic modules is improved by clamping their edges against heat-conducting fins in a housing by means of two expanding jackscrews. Each jackscrew has a shaft mounted in bearings in the module and carries a row of alternate closed... | 02/17/1987 |
| 4633640 | Wall anchor or support A wall anchor or support comprising a support end portion and a shank portion, a plurality of spaced triangular shaped members affixed to the shank and capable of limited pivotal movement when the shank is inserted in an opening in a wall structure and wh... | 01/06/1987 |
| 4626139 | Roof bolt anchor A mine roof bolt expansion anchor utilizes a plurality of transversely bent elongated leaves which are compressed within a bail by the rotation of the roof bolt. The compression results in movement of the leaves toward a flattened position whereby the out... | 12/02/1986 |
| 4566832 | Sleeve-shaped expansion dowel An expansion dowel is formed of an axially elongated sleeve with expansion tongues connected to it so that they can be pivoted radially outwardly projecting from the outside surface of the sleeve. Each of the tongues has a radially directed projection in ... | 01/28/1986 |
| 4523880 | Tie rod assembly for rock borehole anchor A tie rod assembly for a rock borehole anchor includes a tension rod 3 having a plurality of wedge shaped spreading bolts 10 at its lower end surrounded by spreading sleeve 20 segments 21, and a sleeve 40 on its upper end threaded to a tension nut 60 whic... | 06/18/1985 |
| 4509889 | Method of rock bolting and tube-formed expansion bolt A tube-formed rockbolt is partly circular in its cross-section and opposite its circular portion (12) it has a deep depression (16-18). Its ends are sealed and its outer end has a hole (44, 45) or a fitting (24) through which the bolt can be supplied with... | 04/09/1985 |
| 4507034 | Expandable bushing and lock fastener A pin mounts a plurality of expandable and contractable bushings that upon expansion engage the bore of workpieces to hold the latter together. A ball lock expands behind the workpieces to present a positive lock against axial pullout of the fastener. The... | 03/26/1985 |
| 4501520 | Expansion dowel assembly An expansion dowel assembly is used to anchor a part to the surface of a structural member. The expansion dowel assembly is inserted into and anchored within a borehole in the structural member. The assembly includes a support tube, an anchor rod extendin... | 02/26/1985 |
| 4488842 | Nose member for an expandible bushing type locking assembly An improvement to expansible bushing type locking pins which include a handle or clip having camming means at one end to operate the bushings. Such handles or clips include an opening which cooperates with the adjusting nut on the free end of the locking ... | 12/18/1984 |
| 4475856 | Expansion screw with an expansion sleeve having an outer cylindrical surface and regions of greater and lesser wall thickness An expansion screw for being secured in a cavity is threaded at the outer end of its screw portion for co-action with a nut (2) and is provided with an expandable sleeve (10) about its opposite end. The sleeve has an inner profile coacting with an outer p... | 10/09/1984 |
| 4426181 | Binder for panels A binder for panels comprises a main binder part and a wedge member so constructed that the forced insertion of the wedge member into the main binder part causes the split portions formed in the main binder part to spread out and the expansion of the spli... | 01/17/1984 |
| 4425943 | Plug assembly for use in method and apparatus for repairing heat exchangers A shell and tube type heat exchanger having a tube bundle supported at opposite ends in tube sheets is capable of being repaired quickly by closing off opposite ends of a damaged tube using the method and apparatus disclosed. The apparatus comprises a two... | 01/17/1984 |
| 4400122 | Expansion bolt The invention relates to an expansion bolt of a type having an expansible shell arranged on an elongated stud, with a tapered plug being provided to expand the shell in use. In order to render the bolt more versatile, a spacer is provided between the plug... | 08/23/1983 |
| 4380407 | Dual thrust anchor shell assembly A dual thrust anchor shell assembly for use with mine roof bolts or rock bolts include first and second opposed pivotal upper wing elements and first and second opposed, pivotal lower wing elements disposed about a mine roof bolt between a movable upper n... | 04/19/1983 |
| 4366651 | Fixing devices A fixing device is disclosed which in its form described in detail is utilizable as a replacement wall tie anchorable between the two leaves of an existing cavity wall. In this form the device consists of a stainless steel bolt (2) having a stop end (3) w... | 01/04/1983 |
| 4340330 | Straddling dowel Disclosed is a straddling dowel, of plastic, having a continuous screw insertion hole and several expansion segments that are formed by longitudinal slits in the dowel body and which extend from the circular head portion to the circular foot portion of th... | 07/20/1982 |
| 4295760 | Rock bolt anchor A series of adjoining cam discs are mounted on a foot having an inclined surface, with the cams surrounding a stem connecting the foot and a head of a diameter to fit within a borehole in rock. The stem extends axially between the head and the foot, while... | 10/20/1981 |
| 4193246 | Clamping member for an adhesively secured anchor rod An anchor rod is secured within a bore hole by a hardenable adhesive compound. To hold the anchor rod within the bore hole before the adhesive compound sets, clamping members are provided on the exterior surface of the rod inserted into the borehole. The ... | 03/18/1980 |
| 4147458 | Roof pin A roof pin particularly adapted for mine or tunnel roof support in which the strata-gripping assembly has a plurality of locking discs mounted on and carried by one end of an elongate rod, the locking discs being resilient and having a periphery adapted t... | 04/03/1979 |
| 4127741 | Arrangement for elastically clamping glass fibre rods For fixing metal sheaths on glass fiber reinforced plastic rods, which rods are used, for example, in composite insulators: the sheath is in a number of sections in a longitudinal array; there is an abutment inside the sheath at each sheath section, there... | 11/28/1978 |
| 4033222 | Multiple sleeve blind fastener A multiple sleeve blind fastener has a relatively large bearing surface on the blind side of the material in which the fastener is to be mounted, such as the skin of an aircraft or the like. The fastener includes a nut on the driving side of the mating ho... | 07/05/1977 |
