| 摘要 |
The invention provides an anti-theft device (10) especially intended for cycles in which the handle bars are uncoupled from the front wheel when the cycle is not required for use so that the cycle is unsteerable. The device (10) preferably comprises an inner rotatable tube (20) and an outer rotatable tube (16) with corresponding apertures (38) and recesses (36) respectively, and reciprocally rotatable cam means (42) is provided for interengaging the inner and outer tubes (20, 16) by means of rollers or balls (40) to enable the cycle to be steered.
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