Track sanders – Fluid delivery – Movable trap valve
Patent
1987-04-20
1988-12-06
Reeves, Robert B.
Track sanders
Fluid delivery
Movable trap valve
291 23, 291 43, 239112, 239352, 118320, B60B 3902
Patent
active
047891904
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a system for improving the gripping power of a vehicle wheel on a support, comprising nozzles provided at the wheels and being supplied with liquid from a container, and means for controlling the liquid feed, preferably from the driver's seat in the vehicle.
Vehicles having tires covered with a coating that inhibits the gripping power of said tires represent a hazard and a disadvantage to common traffic, since it may become difficult to control such vehicles. Examples of covered tires are to be found in winter in connection with vehicles driving onto roads that are not salted, but covered with snow and possibly ice. The gripping power of the tires is considerably reduced and when driving on slippery slopes the vehicles, thus, often cause because of spinning wheels
In some cases the driver will stop his vehicle at the edge of the road, go out of the vehicle, and put on chains. Such a stop on the road or at the edge of the road, however with the stopped vehicle, may cause some hazard as regards bumping or collision, and the parked vehicles also cause inconvenience to the other cars, etc.
From German Offenlegungsschrift No. 27 16 110 a washing system for tractor tires is known, said system being used to squirt out water onto the wheels, so that dirt and clay will be washed off. The water is expelled through nozzles provided on pipes which are, in turn, attached in the area of the vehicle tires. Such a water based system, however, could not be used in the winter. If water is used for cleaning the tires in the winter there will be a hazard of considerably reducing the gripping force of the tires, and in some cases they might be rendered quite unsuitable for use.
The known system can neither be used for applying any friction enhancing liquid, because liquids which are used in the winter usually are sticky and could easily clog the nozzles that are placed above the vehicle wheels. German Offenlegungsschrift No. 27 16 110, thus, does not disclose a system of applying a sticky liquid, nor does it disclose means cleaning the nozzles after application.
In German Offenlegungsschrift No. 31 07 219 a simultaneous application of an adhesive and a friction enhancing agent on vehicle tires is disclosed. Only manual methods are proposed to apply such agents. In a first case it is suggested to use a spray container with a pipe or hose-shaped connection. Said container contains an adhesive which is to adhere to the tire as well as adhering to, e.g. sand particles. According to said publication it is, furthermore, suggested to apply the adhesive by the aid of a brush. Alternatively, a pistol-like means comprising a lever is proposed for applying adhesive and sand. This method, however, requires the driver to stop his vehicle at the edge of the road, leave the vehicle, and carry out the necessary operations, and such stops have the disadvantages mentioned above.
Adhesives to be applied on a vehicle tire are today also in the market in spray cans. Such an adhesive, however, has a limited effect, dependent on the prevailing road conditions, and a spray can is very awkward to use, since it is necessary to leave the vehicle to spray the adhesive onto the tires. In addition to the fact that one has to leave the vehicle in order to apply the adhesive, said adhesive is very sticky. In more difficult conditions there is a great chance of getting both hands and clothes fouled with the adhesive.
It is an object of the present invention to remedy the above mentioned disadvantages. Thus, the object of the invention is to provide a system that can be activated from the driver's seat with the vehicle in motion and can be used for applying friction enhancing, sticky liquids without the nozzles of the system getting unnecessarily clogged.
In a system of the kind stated above, the object of the invention is achieved by the fact that the container contains a liquid enhancing the gripping power of the wheels in the winter on a winter slippery surface, and that the container is connected with a dispensing means for
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Eike Einar
Skarelven Ragnvald
Reeves Robert B.
UC System A/S
Werny Scott H.
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