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Automatically Checking Pneumatic Tires Under Load

IP.com Disclosure Number: IPCOM000092760D
Original Publication Date: 1967-Jan-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Falkoff, AD: AUTHOR

Abstract

A hazard on high-speed highways and a source of delays on bridges and tunnels is the disabling of vehicles due to tire failures. This system automatically checks the tire pressures of vehicles before allowing them to enter limited access roads, tunnels, etc. The basis for the computation of approximate tire pressure is the weight on the wheel divided by the area of contact of the wheel with the roadway. Thus, the system requires a weight sensor combined with a device for measuring contact area for each wheel or tire. This can be tied into a computer and alarm system.

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Automatically Checking Pneumatic Tires Under Load

A hazard on high-speed highways and a source of delays on bridges and tunnels is the disabling of vehicles due to tire failures. This system automatically checks the tire pressures of vehicles before allowing them to enter limited access roads, tunnels, etc. The basis for the computation of approximate tire pressure is the weight on the wheel divided by the area of contact of the wheel with the roadway. Thus, the system requires a weight sensor combined with a device for measuring contact area for each wheel or tire. This can be tied into a computer and alarm system.

The latter can be used at toll booths or other points or both along the facility to monitor the tire condition of vehicles seeking to use such facility. A pair of such sensing devices can be embedded in the roadway, so that as each axle of the vehicle passes over such pair, the load on each wheel is computed independently. Thus, with a single pair of such devices each axle for a given vehicle is checked.

Multiple wheel axles, i.e., more than two can also be measured with this system although individual tire pressure is not readily ascertainable without segmenting the contact area measurement sensor.

Weight measurement can be performed by conventional vehicular-type scales or by devices such as strain gauges which directly produce electrical signals. A device for measuring contact area can be, for example, an array of spring-loaded pins. The latter, wh...