Abstract: A connector for interconnecting or mutually isolating two or more electrical circuits is provided. The connector comprises first and second inter-engageable connector parts. A first part comprises a spigot and first contact pins for connection to an electrical circuit. The second connector part comprises a socket and second contact pins for connection to an electrical circuit. The second part has a lock ball projecting into the socket. The first part defines a groove for receipt of the lock ball. The first contact holder has a first shroud disposed around the first contact pins. The first shroud extends beyond the first contact pins. The second contact holder has second shrouds disposed around the each second contact pin. The second shrouds extends beyond the second contact pins. The contact holders are arranged such that when the spigot is received in the socket, the connector parts are moveable between a first position and a second position.

Abstract: A linear actuator such as a hydraulic cylinder has linear position sensing apparatus. At least one magnet is provided in a recess in outer surface of the piston for generating a magnetic field that passes through the wall of the cylinder housing. A magnetic sensor arrangement determines the axial position of the piston relative to the housing and comprises at least a pair of magnetic sensor elements arranged at spaced apart locations along the external surface of the wall for sensing the strength of the magnetic field passing through the wall of the housing. The recess in the piston is axially positioned between the first and second end surfaces of the piston and the at least one magnet is disposed between axially spaced north and south pole pieces.

Abstract: A connector for interconnecting or mutually isolating two or more electrical circuits is provided. The connector comprises first and second inter-engageable connector parts. A first part comprises a spigot and first contact pins for connection to an electrical circuit. The second connector part comprises a socket and second contact pins for connection to an electrical circuit. The second part has a lock ball projecting into the socket. The first part defines a groove for receipt of the lock ball. The first contact holder has a first shroud disposed around the first contact pins. The first shroud extends beyond the first contact pins. The second contact holder has second shrouds disposed around the each second contact pin. The second shrouds extends beyond the second contact pins. The contact holders are arranged such that when the spigot is received in the socket, the connector parts are moveable between a first position and a second position.

Abstract: A linear actuator such as a hydraulic cylinder has linear position sensing apparatus. At least one magnet is provided in a recess in outer surface of the piston for generating a magnetic field that passes through the wall of the cylinder housing. A magnetic sensor arrangement determines the axial position of the piston relative to the housing and comprises at least a pair of magnetic sensor elements arranged at spaced apart locations along the external surface of the wall for sensing the strength of the magnetic field passing through the wall of the housing. The recess in the piston is axially positioned between the first and second end surfaces of the piston and the at least one magnet is disposed between axially spaced north and south pole pieces.