Abstract: According to the embodiment depicted, the Suspension Means comprises a flexible limb pivotably coupled, at one end, to a mounting bracket, and having a mooring line hook attached to the opposite end thereof. In addition, the hook has a weighting container pendantly attached thereto, for suspension therefrom, the container being buoyant. The hook is attached to the limb by a length of line, and the container is coupled to the hook by a further length of line. Accordingly, the buoyant container is able to float while causing the limb to bend and dispose the mooring line hook for ready access thereto by a person aboard a water-going vessel. The accessible hook suspends the loop end of a mooring line, and the limb, flexed by the weighting container, holds the hook outward for grasping of the loop end and removal of the mooring line therefrom for tethering of the vessel.

Abstract: Broadly, the structures of the invention comprises a friction rock stabilizer and a sheath therefor to isolate the stabilizer from the surface of an earth structure bore and its associated corrosion environment, and bonding between the engaging surfaces of the stabilizer and sheath. The sheath, of low-friction polyethylene (although other suitable material could be used), facilitates stabilizer insertion into the bore. Additionally, the polyethylene sheath is heat and pressure sensitive. Insertion of the stabilizer generates considerable frictional heat and pressure and, as a consequence, upon the stabilizer being fully inserted, the sheath fuses onto the exterior, interfacing surface of the stabilizer.

Abstract: The friction rock stabilizer comprises an elongate element for insertion into an earth structure bore, for stabilizing the earth structure, which has a sheath rendering the stabilizer impervious to chemical attack and, hence, corrosion-resistant. The bore surface isolating method, in an embodiment thereof, comprises interposing a protective or isolating sleeve or lining between the stabilizer and the earth structure bore. The protective or isolating lining provides two benefits: it facilitates movement of the stabilizer into frictional engagement with the bore, by isolating the stabilizer from the rough surface of the bore wall, and also provides a corrosion-resistant sheath to protect the stabilizer, in the bore, from alkaline or acidic mine water, corrosive minerals, and the like.

Abstract: The stabilizer invention comprises an improved, generally tubular friction rock stabilizer body for insertion into a borehole formed in a structure such as mine roof or side wall, or other subterranean opening for stabilizing the structure, the body having a maximum transverse dimension greater than borehole in which it is to be inserted, and requiring therefore considerable force to effect its borehole insertion, the stabilizer having a facility for attaching a pendant thereto. An end of the body has a threaded nut fixed therein which receives a threaded, elongate, suspension bolt as the pendant. Thus, the pendant bolt, having a terminal drive head, can engage and pendantly support an ancillary article, such as a roof plate, remotely from the stabilizer body.

Abstract: According to a preferred embodiment of the invention the stabilizer comprises an elongate, generally annular element for insertion into an undersized bore in a roof or wall of a mine shaft, or tunnel, or the like, for frictionally engaging the bore surface to stabilize the subterranean earth structure in which the bore is formed, in which the element has stiffening ribs disposed lengthwise thereof in order that the stabilizer may be formed of relatively thin material without significant loss of longitudinal strength. The ribs are defined by inwardly-directed channels, formed in the outer surface of the stabilizer, which facilitate circumferential compression of the stabilizer so that the latter can be readily inserted into the undersized, earth structure bore.