An apparatus for electrical connection in wells and other remote environments
An apparatus comprising an electrically powered device. The apparatus comprises a functional device, a device electrical terminal, a casing, a power supply and a casing electrical terminal. The apparatus is characterised in that corresponding physical retaining means are provided on the device and the casing respectively, to ensure that physical connection between the device electrical terminal and the casing electrical terminal is maintained, during use of the apparatus. The physical retaining means of the apparatus automatically engages when the device is moved into the desired position relative to the casing.
1 . An apparatus for electrical connection in wells and other remote environments, comprising: an electrically powered device comprising a functional device and a device electrical terminal; and a casing comprising a power supply and a casing electrical terminal, characterized in that corresponding physical retaining means are provided on the device and the casing respectively, to ensure that physical connection between the device electrical terminal and the casing electrical terminal is maintained, during use of the device.
2 . The apparatus according to claim 1 , wherein the physical retaining means is engaged automatically.
3 . The apparatus according to claim 1 , wherein the automatic physical retaining means is engaged when the device is moved into the desired position relative to the casing.
4 . The apparatus according to claim 1 , wherein the physical retaining means includes at least one latching cam.
5 . The apparatus according to claim 4 , wherein the at least one latching cam is in the form of a spring arm.
6 . The apparatus according to claim 4 , wherein the at least one latching cam comprises a spring arm and includes an enlarged portion at one end which engages with a corresponding shoulder on the casing to prevent lateral movement.
7 . The apparatus according to claim 4 , wherein there are two latching cams, one on each side of the device electrical terminal.
8 . The apparatus according to claim 1 , wherein a sufficient overpull is applied to the device to release the physical retaining means and retrieve the device.
9 . The apparatus according to claim 4 , wherein the at least one latching cam of the electrical device is guided along guides in the casing.
10 . The apparatus according to claim 5 , wherein the at least one latching cam spring arm can perform multiple engagements and reengagements.
11 . The apparatus according to claim 1 , wherein the casing electrical terminal is covered by a sliding shroud.
12 . The apparatus according to claim 11 , wherein the sliding shroud exposes the electrical terminal upon engagement of the device electrical terminal.