Fluent material handling – with receiver or receiver coacting mea – Diverse fluid containing pressure filling systems involving... – Tire inflation
Reexamination Certificate
1999-05-11
2001-09-04
Maust, Timothy L. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
Diverse fluid containing pressure filling systems involving...
Tire inflation
C141S041000, C141S067000, C141S114000, C141S313000, C141S382000, C152S415000, C222S386500, C222S389000
Reexamination Certificate
active
06283172
ABSTRACT:
The present invention relates to a device for repairing a tire fault by injecting repair liquid into the faulty tire, said liquid being present in a compressible liquid storage volume.
Devices of this kind are known. They are taken along in a vehicle with or, preferably, without spare tire.
The majority of tire faults is caused by penetration of sharp objects, such as nails or broken glass or similar, into the cap of the tire. Thanks to a considerable quality improvement for tires, even these punctures have become rare. Therefore, one has considered to do without spare tires or even emergency tires at all. Doing this, space may be saved in the vehicle, or the saved space may rather be used for transportation volume. This is especially applicable to compact or small vehicles or for sports cars. When a space-saving repair set is carried along instead of a spare tire, and with which the driver of the vehicle may help himself in case of a tire fault, without being compelled to dismount in situ the wheel with the damaged tire, there is no need to accordingly carry along other tools intended for tire replacement nor an autolifter. All this leads to considerable weight saving.
The devices or repair sets, respectively, known until now yet are not user-friendly enough. The repair is carried out following the possibly necessary removal of the damaging part from the tire surface by means of a repair or patching liquid which is introduced into the damaged tire. Subsequently, by means of a small compressor being part of the repair set, said compressor may be electrically driven from the on-board vehicle supply, the repair liquid will be hardened with pressure and the repaired tire inflated. Doing this, the wheel with the repaired tire may remain on the vehicle. During the repair process, however, the vehicle should be moved over some meters in order to spread the repair liquid in the tire.
A known device for the repair of tire faults or a known repair set, respectively, consists of separate loose parts brought together. The repair liquid is in a bottle which may be compressed manually, and it is thus filled into the tire via a flexible delivery tube. For this procedure, the tire valve must be removed and re-inserted subsequently. Superfluous patching means must be drawn off if necessary. The tire is inflated in the above-described manner.
Indeed, another repair set is put together in a box and the filling and inflating may be carried out continuously. The repair liquid thereby is in a pressure-resistent metal bottle, said bottle, however, being heavy. By means of the small compressor, which is also built into the repair set box, it is evacuated into the tire via a flexible delivery tube by introducing pressurized gas into the metal box. In this bottle, an ascending pipe may be found. As soon as said pipe does no longer sense liquid, the pressurized gas will be led into the tire. Hereby it is necessary that the metal bottle remains vertical. The operation is position-dependent. Furthermore, a return valve is necessary with this kind of operation. Additionally, the bottles must be cleaned after use, before being re-filled again. Moreover, each metal bottle must be replaced every two to three years, even if it had not been used. The bottles must also be cleaned and re-filled again when they are replaced. In addition to the weight, high costs arise with the use of this repair set.
Opposed thereto, the present invention is based on the object to provide a device for repairing a tire fault of the initially described kind, which has low weight, is cheap and assures a user-friendly use.
For fulfilling this task, a device is provided according to the characteristics of the independent claim
1
.
Advantageous realizations are described in the subclaims.
The object of the invention takes up again the known compressible bottles with repair liquid. According to the invention, however, these will not be manually compressed, the liquid storage volume, however, containing the repair liquid, is sealed in such a way that it is watertight at at least one first sealing point to be opened, and is located in a pressurized container, said pressurized container being subjected to the pressure of a pressurized gas from a pressurized gas source in a pressurized chamber which becomes larger as it is affected by said pressurized gas, and that the first sealing point is opened, the volume delivering repair liquid to the tire through the opened first sealing point and via the flexible delivery tube until no more liquid is delivered, the pressure then drops in a chamber arranged above the pressurized container, the pressure difference between a pressurized gas delivery channel and the chamber increases and, due to the increased pressure difference, causes at least one second sealing point to open, said second sealing point being arranged between the delivery channel and the chamber, clearing a channel leading through the flexible delivery tube from the pressurized gas source to the tire.
In an advantageous manner, the repair process proceeds by itself continuously and may be simply handled even by a non-expert. Hereby, the device is absolutely position-independent.
In one advantageous realization of the invention the first sealing point is opened by affecting the compression chamber by pressure and the resulting compression of the volume. Thereby happens an automatic opening of the first sealing point without the necessity to use further devices. This means on one hand, that the device as a whole may be realized in lower weight and cost.
According to another realization of the invention it is likewise possible that the first sealing point and/or the second sealing point is manually, mechanically, electrically, pneumatically or hydraulically controlled and opened or closed, respectively.
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Alusuisse Bayrisches Druckguss-Werk GmbH & Co. KG
Maust Timothy L.
Weingarten, Schurgin Gagnebin & Hayes LLP
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