Curb feelers or curb finders are springs or wires mounted on vehicles that act as "whiskers" to alert drivers when they are at the exact distance from the sidewalk when parking.
The device is mounted low on the body, close to the wheel. As the vehicle approaches the sidewalk, prominent signs are scratching the sidewalk, making noise and alerting the driver on time to avoid wheel or hubcap damage. The feel is flexible and not easily broken.
Video Curb feeler
Hotrods
Curb feelers are still used on some hot rods when the 1950 display is desired. They are very popular for cars with whitewall tires, which easily lose their white coating when scratched against the sidewalk. Sometimes the sidewalk antenna is found only on the passenger side of the car, as it is most common near the sidewalk when parking. Sometimes they are added just next to the front wheel. Some people who use sidewalks have one wire or spring, while others have two to increase the protected area. Each particular car may have only one pavement installed (as in the picture) or more if mounted near the front and rear, as well as on both sides of the vehicle.
Maps Curb feeler
Recreational vehicles
Recreational vehicles sometimes have rubber or metal, antenna rods such as mounted on the underside of the body acting as touchers so drivers are warned if they approach sidewalks or other obstacles, thereby reducing the chances of prying or even cutting sidewall tires and generally improving the safety of vehicle operations.
Machine
Today, the US Department of Labor and Health Safety Administration mentions that heavy equipment users can benefit from analog accessories:
In the 1950s, cars were often equipped with sidewalks... Using a 48-inch conveyor conveyor piece, 4 to 5 feet in length with a width of 4 to 6 inches and a few pieces of angled iron, you could create a feeler pinch point, angle of continuous miner. It will alert anyone who is in a dangerous area, giving him about two legs to stop the machine or shout at the operator to stop. Belting is stiff enough to maintain its shape but is flexible enough to be provided if it goes to the miner or vice versa. This flexibility also allows this "curb curler" to drag the ribs or be hit by a shuttle car with little or no damage. A little spray from a reflective paint tin will make the device a visual warning belt as well. One or two in every corner will help or enter as many as you want.
Electronic sensor
Curb feelers based on optical technology are designed to work the same way but work near obstruction rather than having physical contact with it. As described by one United States patent:
An electronic wing dampening system uses two pairs of optical sensor units to detect objects located near the front end of the vehicle during parking. A pair of optical sensor units detect objects directly in front of the left side of the front end of the vehicle while a pair of optical sensors detect objects directly in front of the right portion of the front end of the vehicle. By providing the vehicle operator with the object location as well as the exact distance the object from the front end of the vehicle the operator can avoid hitting the object when parking is very close to the object.
Such devices, and simple electronic devices similar to roadside wire antennas used on cars, are used in the design of various mobile robot devices. One of the robotics companies working for the US Department of Defense uses laser assisted pavement towing technology.
See also
- Fender skirt
References
Source of the article : Wikipedia
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