(57) A device (100) for stopping an approaching target vehicle by deflating the vehicle's
tires. The device (100) has a scissor-like extendable and retractable construction
with upward facing spikes. After deployment, the deflator (200) may be retracted automatically
and/or by the push of a button. The deflator (200) can be stored in the enclosure
(130) to which it is attached. The deflator (200) is extended by pushing a central
hinge (202) of the scissor construction forward, almost completely out of the enclosure
(130). The propulsion means is actuated by a compressed gas capsule, preferably carbon
dioxide, and an air cylinder (120) with a linear movable piston (121) connected to
the deflator (200). The gas capsule releases gas under pressure to the air cylinder
(120) and moves the piston (121) in a first direction, thereby extending the deflator
(200). By leading compressed gas of the gas capsule to the opposite side of the cylinder
(120), the piston (121) moves in the opposite direction and the deflator (200) is
retracted.
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