Abstract: An anti-decoupling arrangement comprises a containing spring (600) including a blade (610), a pair of coupling sleeves (300, 400) being nested for relative rotation within the spring, and a coil spring (700) operating to resist rotation of the sleeves from a first to a second position as defined by a pair of detents (426, 428) on an outer flange (420), coupling rotation of the sleeves causing an inner flange (320) to axially drive the containing spring into nonrotating abutment with a shoulder (140) on a plug shell and the outer flange to disengage the blade from engagement with the first detent and to continue rotating whereby to move the blade into engagement with the second detent and compress the coil spring with external uncoupling torques tending to disturb the abutting relation of the containing spring being resisted by the coil spring biasing the inner sleeve oppositely into the coupling direction.

Abstract: An electrical connector assembly (100) includes a coupling ring (50) for connecting together two connector housings (10, 20) and self-contained means for resisting rotation of the coupling ring relative to the connector housing (20) to which it is rotatably mounted. The resisting means includes coupling ring (50) and connector housing (20) respectively, frusto-conical surfaces (72, 82) with protuberances (74) and sockets (84), in faced relation, the protuberances being adapted to be received in and rotated to succeeding sockets. The compressible plastic is such that as the housings are drawn into tight engagement the protuberances on the coupling ring engage the plastic surface on the other connector housing (10), causing the protuberances and surfaces to elastically compress.