Abstract: A fastening device to releasably interconnect ground protection mats or panels. The fastening device comprises a first male part and a second female part. Each male and female part comprise a respective helical rib having features configured to interlock so as to provide frictional resistance to axial separation so as to interconnect ground protection mats to form a unitary ground covering system.

Abstract: A fastening device to releasably interconnect ground protection mats or panels. The fastening device comprises a first male part and a second female part. Each male and female part comprise a respective helical rib having features configured to interlock so as to provide frictional resistance to axial separation so as to interconnect ground protection mats to form a unitary ground covering system.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: An apparatus comprising a first power combiner/divider network and a second power combiner/divider network. The first power combiner/divider network splits a first electromagnetic signal into split signals that are connectable to signal processor(s). The second power combiner/divider network combines processed signals into a second electromagnetic signal. The apparatus includes a three-dimensional coaxial microstructure.

Abstract: A modular unit for mounting on at least two different designs of self-propelled grass treatment machine, each machine having a number of mounting locations for mounting respective modular units and in which the mounting locations of one machine are different in type or design from the mounting locations on the other machine The modular unit contains a frame having end frame plates spaced apart from each other transversely with respect to the direction of forward travel of the machine; rotatable mountings provided on the end frame plates; a rotatable grass-treatment device having a drive shaft extending between the rotatable mountings, and provided with working elements arranged along its length; a device for applying drive to the shaft; and mounting points provided on the frame of the modular unit to accept at least two different types and/or arrangements of fitting brackets that permit the modular unit to be mounted on the grass treatment machines.

Abstract: A modular unit for mounting on at least two different designs of self-propelled grass treatment machine, each machine having a main frame provided with a number of mounting locations for mounting respective modular units and in which the mounting locations of one machine are different in type or design from the mounting locations on the other machine, and in which the modular unit is operative to carry out a required grass treatment action when mounted in position.