Abstract: The present invention provides a burglarproof lock core structure which forms a curved passage between a key slot of a plug and a lower pin chamber, such that at least a bending concave surface offsetting the center of the key slot is formed at one side, and cone apexes of a plurality of lower pins are extended out of the lower pin chamber and aligned in the wall edge of the key slot. Moreover, a control valve with a cone apex is located at the other end corresponding to the bending surface inside the key slot, such that a key with curvature corresponding to the passage and notches corresponding to the cone apexes is required to open the lock, thereby having the effect of high security of burglarproof.

Abstract: The present invention provides a burglarproof lock core structure which forms a curved passage between a key slot of a plug and a lower pin chamber, such that at least a bending concave surface offsetting the center of the key slot is formed at one side, and cone apexes of a plurality of lower pins are extended out of the lower pin chamber and aligned in the wall edge of the key slot. Moreover, a control valve with a cone apex is located at the other end corresponding to the bending surface inside the key slot, such that a key with curvature corresponding to the passage and notches corresponding to the cone apexes is required to open the lock, thereby having the effect of high security of burglarproof.

Abstract: An anti-theft device for a steering wheel of a vehicle includes a base plate and a casing each having a hook for engaging onto the steering wheel. A housing is secured on the base plate. The casing includes a beam slidably received in the housing and having a channel formed between a stop shoulder and an end rib. A lever has one end slidably received in the housing and has a catch slidably engaged in the channel of the beam. A lock may lock the lever to the housing and the base plate, to secure the casing and the base plate together on the steering wheel.