An anchor device which includes a pipe (16), an elongate member (18) which is partly inside the pipe and which has an end (20) which protrudes from the pipe (16), and a restraining component (22) which is engaged with the protruding end (20). The pipe (16) and the elongate member (18) are shaped with a plurality of deformations along their respective lengths such that the elongate member (18) can only be withdrawn from the tubular member (16) by further deforming the elongate member (18).

The invention concerns a reverse circulation rock drill having a backhead attached to a piston and cylinder assembly between the backhead and a drill bit assembly and around a sample tube with the outer walls of the sample tube and piston profiled to provide air paths for power and exhaust strokes of the piston, a O-ring seal being provided in the backhead as a check valve.

A rock drill has at least one hard material insert (2) with at least two cutting edges (3, 7) consisting of hard material and extending radially to the drill axis (A), whereby, in a radial range of 20% to 50% of their drilling radius, at least two cutting edges (3, 7) each have an axial recess (4), and the cutting edges (3, 7) rotating around the drill axis (A) extend with their cutting edges in their entirety without any gaps over the entire drilling radius.

A rock picker having a frame supported by rear support wheels and a tongue that is adapted to be attached to a tractor draw bar. A basket assembly having gathering tines and separation bars is carried by the frame. The gathering tines gather rocks and hold the rocks while allowing soil to pass between adjacent tines. The basket assembly is pivotally attached to short links. The short links are pivotally attached to the frame. Hydraulic cylinders are attached to the frame and to the basket assemb...

A rock drilling bit for drilling bores in rock, more particularly to a percussion rock drilling bit. Specifically, a rock drilling bit having hard material cutting inserts affixed to an austempered ductile iron (ADI) drill body, and a method of drilling rock using said bit.

The rock drill (9) includes a reversible rotary motor (10) and a percussion unit (11) with a percussion valve (17). Rotary unit and Percussion unit (11) are operated via separate valves (39, 46) in a control unit (34). The percussion frequency of the percussion unit (11) is coupled to the rotation rate of the rotary motor (10) in such a way that the percussion unit (11) stops automatically when the rotary motor (10) comes to a standstill. The coupling is achieved by employing a fluid driven asse...

A rock windrower has a pair of side blade members that are elongated at fore and aft directions and are positioned to be widely spaced at one end and tapering to a narrow spacing at an opposite end. Movement along the ground with the side blade members engaging or adjacent to the ground surface causes rocks that are engaged to be moved along the tapered V-shaped frame to form a windrow. The side members include cutting blades along the lower edges. A plurality of gauge wheels on the side blade m...

A rock separator for attachment to the boom arms of a tractor or skid steer having a bucket sieve and an apron. As the rock separator is pushed over the ground, the apron grid scoops soil and rock over the apron and into the bucket sieve. Openings through both the apron and the bucket sieve allow dirt and smaller soil particles to pass back onto the ground while retaining larger rocks. Wheels on the bucket sieve for engaging the ground as the rock separator is pushed along the ground allow for e...

The present invention discloses an automated rock saw having a saw motor load sensor to control the speed of the conveyors bringing the rock to the saw blade. As the saw motor works harder to cut a given rock, the controller automatically slows the conveyor belts, reducing the load on the saw blade. If the saw blade is easily cutting a given rock and not working at optimum speed, the conveyors will be sped up, increasing production. Also provided in an alternate embodiment is a horizontal blade ...

A rock laminate has been provided that includes a layer of rock and a flexible layer. The layer of rock has a plurality of pores that can receive fluid. The flexible layer is positioned above the layer of rock and has a portion which extends into the pores of the layer of rock. Additionally a method for making a rock laminate is provided. The method includes providing a rock having an exposed surface and applying a polymer that bonds with the exposed surface. The polymer is lifted along with cor...