Abstract: A mobile rig for processing mineral material, comprising a feeder including a feed device for receiving mineral and a feeder conveyor arranged to convey mineral. The mobile rig includes a main chassis supporting a mineral breaker; and a discharge conveyor. The mineral breaker has an infeed region via which it receives mineral and a discharge region via which it discharges mineral after processing in the mineral breaker. The feeder conveyor is such as to convey mineral from the feed device to the infeed region of the mineral breaker and the discharge conveyor is such as to convey mineral from the discharge region of the mineral breaker. The rig includes a primary transport carriage on which the main chassis is supported.

Abstract: A mineral breaker 10 including a row of side-by-side breaker drum assemblies 30 having radially projecting breaker teeth 38. The row includes at least four breaker drum assemblies 30 arranged to define an inner pair DB of adjacent breaker drum assemblies 30a located in-between a pair of outer breaker drum assemblies. The inner pair of breaker drum assemblies 30a defines therebetween a mineral deposit region DM for receiving mineral in-flow. The breaker drum assemblies 30a of said inner pair DB of breaker drum assemblies being rotated in opposite directions such that, in use, breaker teeth 38 on each of said inner breaker drum assemblies 30a act upon mineral being deposited in said deposit region DM to cause agitation of the deposited mineral in-flow in order to encourage undersized mineral to pass therebetween whilst preventing oversized mineral passing therebetween.

Abstract: A mobile rig for processing mineral material, comprising a feeder including a feed device for receiving mineral and a feeder conveyor arranged to convey mineral. The mobile rig includes a main chassis supporting a mineral breaker; and a discharge conveyor. The mineral breaker has an infeed region via which it receives mineral and a discharge region via which it discharges mineral after processing in the mineral breaker. The feeder conveyor is such as to convey mineral from the feed device to the infeed region of the mineral breaker and the discharge conveyor is such as to convey mineral from the discharge region of the mineral breaker. The rig includes a primary transport carriage on which the main chassis is supported.

Abstract: A mineral breaker including a pair of breaker drum assemblies rotatably housed in a housing with their axes parallel, each drum assembly including circumferentially extending groups of teeth, the groups being spaced axially along the drum assembly to define a circumferentially extending channel between adjacent circumferential groups of teeth, the drum assemblies being arranged such that each circumferential group of teeth on one drum assembly is located to enter a circumferentially extending channel between a pair of neighboring circumferential groups of teeth on the other drum assembly, the cross-sectional shape and size of each tooth and channel being complementary such that the sides and tip of a tooth when entering a channel are closely spaced from the sides and bottom of the channel, and an elongate breaker bar extending longitudinally in a direction parallel to the axes of the drum assemblies, the breaker bar being located with its longitudinal axis positioned inbetween and beneath the axes of rotation

Abstract: A breaker having a first end and a second opposed end and a plurality of breaker drums arranged side by side in a row extending between said ends, the drums being arranged with their axes of rotation parallel to one another, at least two neighboring drums adjacent to the first end being arranged to continuously rotate in the same direction to define feeder drums for feeding material toward the second end, each breaker drum having radially projecting breaker teeth which co-operate with opposed breaker teeth on the adjacent drum to grip oversized material therebetween to cause breakage thereof, to permit passage of undersized material therebetween and to move unbroken oversized material toward said second end.

Abstract: A tooth construction for a mineral bear, the tooth construction including a tooth shaped support body covered by a shell which defines the outer shape of the tooth construction, the shell being composed of a plurality of covers which are fixedly secured to one another and/or to the support body by welding to define a unitary tooth construction the support body having a front face and an opposed rear face and the plurality of covers including at least a front cover which is weldingly secured to and seated in face to face contact with the front face of the support body and a separate rear cover which is weldingly secured to and seated in face to face contact with the rear face of the support body.

Abstract: A mineral breaker 10 including a row of side-by-side breaker drum assemblies 30 having radially projecting breaker teeth 38. The row includes at least four breaker drum assemblies 30 arranged to define an inner pair DB of adjacent breaker drum assemblies 30a located in-between a pair of outer breaker drum assemblies. The inner pair of breaker drum assemblies 30a defines therebetween a mineral deposit region DM for receiving mineral in-flow. The breaker drum assemblies 30a of said inner pair DB of breaker drum assemblies being rotated in opposite directions such that, in use, breaker teeth 38 on each of said inner breaker drum assemblies 30a act upon mineral being deposited in said deposit region DM to cause agitation of the deposited mineral in-flow in order to encourage undersized mineral to pass therebetween whilst preventing oversized mineral passing therebetween.

Abstract: A normally off JFET is formed by the implantation of a P base; and a shallower P island atop the P base, forming a narrow lateral conduction channel between the two and a shallow gate implant in the device top surface which forms a second lateral conduction channel with the island. The two channels are each less than 0.5 microns thick and have an impurity concentration such that the channels are depleted at zero gate voltage and are turned on when the gate is forward biased. The gate surrounds a source implant region and a remote drain is provided which is connected to the top surface of the device for a lateral JFET or the bottom of the device for a vertical conduction JFET.

Abstract: A breaker having a first end and a second opposed end and a plurality of breaker drums arranged side by side in a row extending between said ends, the drums being arranged with their axes of rotation parallel to one another, at least two neighboring drums adjacent to the first end being arranged to continuously rotate in the same direction to define feeder drums for feeding material toward the second end, each breaker drum having radially projecting breaker teeth which co-operate with opposed breaker teeth on the adjacent drum to grip oversized material therebetween to cause breakage thereof, to permit passage of undersized material therebetween and to move unbroken oversized material toward said second end.

Abstract: A mineral breaker including a pair of breaker drum assemblies rotatably housed in a housing with their axes parallel, each drum assembly including circumferentially extending groups of teeth, the groups being spaced axially along the drum assembly to define a circumferentially extending channel between adjacent circumferential groups of teeth, the drum assemblies being arranged such that each circumferential group of teeth on one drum assembly is located to enter a circumferentially extending channel between a pair of neighbouring circumferential groups of teeth on the other drum assembly, the cross-sectional shape and size of each tooth and channel being complementary such that the sides and tip of a tooth when entering a channel are closely spaced from the sides and bottom of the channel, and an elongate breaker bar extending longitudinally in a direction parallel to the axes of the drum assemblies, the breaker bar being located with its longitudinal axis positioned inbetween and beneath the axes of rotatio

Abstract: A tooth construction for a mineral bear, the tooth construction including a tooth shaped support body covered by a shell which defines the outer shape of the tooth construction, the shell being composed of a plurality of covers which are fixedly secured to one another and/or to the support body by welding to define a unitary tooth construction the support body having a front face and an opposed rear face and the plurality of covers including at least a front cover which is weldingly secured to and seated in face to face contact with the front face of the support body and a separate rear cover which is weldingly secured to and seated in face to face contact with the rear face of the support body.

Abstract: A mineral breaker bar assembly for a mineral breaker having at least one breaker drum assembly rotatably mounted in a housing, the breaker bar assembly having an elongate support body adapted for mounting on the mineral breaker housing and having a plurality of breaker teeth mounted on the elongate support body, each of the breaker teeth being adjustably mounted on the elongate support body to enable the height of each breaker tooth relative to the support body to be individually adjusted.

Abstract: Apparatus for transporting mineral from a point of mining to a remote location, the apparatus including a mobile mineral breaker rig (MBR) having a mineral outlet, the rig including a fluid inlet pipe for receiving conveying fluid, a mineral inlet for introducing mineral from said mineral outlet into said fluid pipe and a fluid outlet pipe for conveying said fluid mixed with mineral received from said mineral outlet, an extensible pipeline assembly (EPA) connected at one end to said inlet and outlet pipes and being adapted for connection at its opposite end to one end of a static pipeline communicating with said remote location, said extensible pipeline assembly being expandable to enable said mobile rig to move away from said one end of the static pipeline whilst maintaining fluid communication therewith, said extensible pipeline assembly comprising a series of elongate pipe assemblies (90a, 90b, 90c) which are articulated at adjacent ends to one another in a zig-zag manner via an articulated joint, each elo

Abstract: A normally off JFET is formed by the implantation of a P base; and a shallower P island atop the P base, forming a narrow lateral conduction channel between the two and a shallow gate implant in the device top surface which forms a second lateral conduction channel with the island. The two channels are each less than 0.5 microns thick and have an impurity concentration such that the channels are depleted at zero gate voltage and are turned on when the gate is forward biased. The gate surrounds a source implant region and a remote drain is provided which is connected to the top surface of the device for a lateral JFET or the bottom of the device for a vertical conduction JFET.

Abstract: Apparatus for transporting mineral from a point of mining to a remote location, the apparatus including a mobile mineral breaker rig (MBR) having a mineral outlet, the rig including a fluid inlet pipe for receiving conveying fluid, a mineral inlet for introducing mineral from said mineral outlet into said fluid pipe and a fluid outlet pipe for conveying said fluid mixed with mineral received from said mineral outlet, an extensible pipeline assembly (EPA) connected at one end to said inlet and outlet pipes and being adapted for connection at its opposite end to one end of a static pipeline communicating with said remote location, said extensible pipeline assembly being expandable to enable said mobile rig to move away from said one end of the static pipeline whilst maintaining fluid communication therewith, said extensible pipeline assembly comprising a series of elongate pipe assemblies (90a, 90b, 90c) which are articulated at adjacent ends to one another in a zig-zag manner via an articulated joint, each elo

Abstract: A mineral breaker including at least one breaker drum having breaker teeth projecting radially therefrom, the teeth being arranged so as to define a series of discrete circumferentially spaced helical formations extending along the drum.

Abstract: A mineral breaker including at least one breaker drum carrying a plurality of breaker teeth projecting radially therefrom, at least one breaker tooth comprising a tooth core projecting radially outwardly of the drum and having leading and trailing faces, an open sided tooth sheath including a leading wall and a trailing wall connected to one another at one end by a connecting wall which forms the terminal end of the tooth, the inner surfaces of the leading and trailing walls of the tooth sheath having flat faces which abuts against opposed flat faces on the tooth core.

Abstract: A mineral breaker having at least one breaker drum, the drum including a generally cylindrical support body from which a plurality of radially extending projections project by a distance equal to at least half the radius of the body, each projection being covered by a tooth sheath to define a breaker tooth having a maximum radial dimension projecting beyond the circumference of the support body which is greater than a major portion of the radius of the support body.

Abstract: A mineral breaker comprising a breaker drum rotatably mounted in a casing which extends about a portion of the periphery of the drum to partially envelope the drum, the breaker being adapted for connection to the delivery end of a conveyor so as to be capable of breaking lumps of mineral being delivered from the conveyor and deposit the broken material to a position below the conveyor.