Patent ID: 6964459

Claim:
A tamper-proof anti-theft device for a vehicle employing air-operated parking brakes, said device being disposed about said parking brake control knobs when engaged, said device comprising: a. a pair of mating halves, each having a front and back, an outside surface and an inside surface that mate together, said halves being formed for surrounding and enclosing said brake control knobs while in an engaged position, wherein a first of said mating halves includes a mating slot formed near the front thereof and a tongue near the back thereof and extending perpendicularly from said inside surface and said tongue having an opening therein; i) said inside surface of said first of said mating halves having a first pair of recesses near the front thereof for receiving the tops of said brake control knobs and a second pair of recesses near the back thereof, and smaller than said first pair of recesses, for receiving the shafts of said brake control knobs; ii) said second of said mating halves having a third pair of recesses near the front thereof and mating with said first pair of recesses for receiving the tops of said brake control knobs and a fourth pair of recesses near the back thereof, and smaller than said third pair and mating with said second pair of recesses, for receiving the shafts of said brake control knobs and further including a channel for receiving said tongue of said first half; iii) said second of said mating halves including covers near the front thereof and extending perpendicularly from said inside surface, said covers covering said first and said third pair of recesses and having peripheral edges for engaging mating slots in said first of said mating halves; b. a lock having a locking pin being disposed in said second mating half wherein said locking pin engages said opening in said tongue so as to secure said first and second halves together; and, c. adjustment screws secured into said first pair of recesses for engaging a back side of the tops of said brake control to prevent movement thereof.