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A U.S. Army soldier deploying a stinger at a vehicle checkpoint in Iraq. A spike strip (also referred to as a spike belt, road spikes, traffic spikes, tire shredders, stingers, stop sticks, by the trademark Stinger or formally known as a Tire Deflation Device or TDD) is a device or incident weapon used to impede or stop the movement of wheeled vehicles by puncturing their tires.
The hollow spikes puncture self-sealing rubber tires. The hole in the center allows air to escape even if other ends of the tube are sealed by soft ground. Inventors patented caltrop-like devices to deflate vehicle tires in a manner useful to law enforcement agencies or the military. [18] [19] They are currently used by the military and police. [5]
Wheel spikes are pointy protrusions attached to the wheels or hubcaps of vehicles, most commonly cars and semi-trucks. Most wheel spikes sold are made out of plastic painted to mimic metal and are primarily novelty items .
A modern wheel clamp placed on a BMW E60 5 Series for a parking violation in Melbourne by the Victorian Sheriff; note the tire spikes and panel preventing the vehicle being driven or the wheel being removed Wheel clamp as used by the Los Angeles Department of Transportation
The motorist attaches this to the valve, and the compressed propellant inside forces the can's contents through the valve into the tire, a liquid sealant is forced towards the puncture and will seal the puncture. The compressed propellant also inflates the tire. Tire sealant is typically useful on punctures of 3/16in. (5mm) diameter or less.
While grousers are usually straight, they may have more complex shapes, including spikes [4] and involute curves, depending on the type of terrain and the performance requirements of the vehicle. [5] Grousers are typically made of metal, such as forged steel , and are not designed for use on paved roads. [ 4 ]
The biggest complaint by tire professionals regarding tire inflators is around removing the sealant from inside the tire. They believe that it is a difficult, time-involved process that may damage the tire. Some brands like Fix-A-Flat offer a water-soluble formulation that allows the product to be removed quickly and easily with a towel and water.
Puncture resistance denotes the relative ability of a material or object to inhibit the intrusion of a foreign object. This is defined by a test method , regulation, or technical specification . It can be measured in several ways ranging from a slow controlled puncture to a rapid impact of a sharp object or a rounded probe.
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