| 摘要 |
A lightweight vehicle immobilization device useful to prevent theft of a vehicle or to prevent driving of said vehicle by its owner having a hub shield, an adjustable arm, a upper arm and a lower arm, each of said arms having ends which are adapted to traverse the tread of a tire of said vehicle and engage the inside of said tire so as to prevent removal of said device when said device is adjusted to the circumference of said tire; the improvement comprising means on said hub shield to limit the degree of outward rotation of said upper and lower arm to about 120 degrees when engaged on said tire, and a wedge shaped member having two surfaces which are about 120 degrees from each other, said wedge shaped member adapted to slide on said adjustable arm and, when locked in position, functioning to prevent inward rotation of said upper arm and said lower arm and to prevent movement of said adjustable arm.
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