Provided is a telescopic lock that can be fixed to a variety of closures of different configurations to thereby provide another closure protection measure.

A retention arrangement for releasably securing a closure against a fixed body is provided. The retention arrangement includes a housing defining a mouth configured to receive a striker and defining a longitudinal axis, and at least one retention element configured to selectively retain the striker within the mouth, and movable between an open position and a closed position. The retention element is resiliently biased towards the closed position. The retention element is configured to open upon displacement due to the striker along the longitudinal axis in a first direction, and to close upon complete insertion of the striker within the mouth. The retention element is configured for rotation about at least two non-parallel axes so as to direct the striker towards the mouth.

The present invention generally relates to a rocking device for waste containers, particularly residential or commercial waste containers. In particular, the invention provides a waste container locking device which keeps the container closed when a sudden jerk or jarring, such as by ground impact, is applied on the container, so that the container does not open when it is accidentally knocked over, but may be opened when tipped during dumping.

A portable lock includes a wireless signal receiver. The lock may be unlocked by transmitting a wireless unlock signal from a portable device such as a cellular telephone. Various actuation mechanisms which may include a solenoid, motor or memory wire of a type that contracts when energized are provided in example embodiments. Self-locking embodiments are readily operated with one hand.