Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1993-01-22
1995-07-11
Scherbel, David A.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525004, 248 742, B60S 146, B60S 132
Patent
active
054309093
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND
The invention refers to a wiper arm that includes a coating along part of its length.
Such wiper arms with a coating which surrounds at least a part of the length of the wiper rod are known from DE-OS 3346 384. Here, the proposed coating fulfills the purpose offering a smooth surface on the wiper arm, especially on the wiper rod for a person looking at it. For this purpose, loose coatings as well as tightly fixed coatings are suggested.
Besides, it can be seen from above-mentioned specification, that a spraying facility is fastened onto the wiper arm, which ensures that the part of the windshield reached by the wiper blade is covered with washing liquid.
Furthermore, it is suggested to provide the coating with a bore which serves as pipe for the cleaning fluid. This kind of pipe for washing liquid is therefore advantageous, because there is a nozzle tip on the end of the bore. However, this embodiment is not useful at windshield or lamp washing systems, where a separate nozzle tip is provided.
SUMMARY OF THE INVENTION
The object of the invention is to create a wiper arm of such kind as mentioned at the beginning, which guides and secures the hose, and which resists the attacks of steam jet machines and brushes of a car washing system. On the other hand, it is an object of the invention to provide a wiper arm which allows the hose to be dismantled easily in case services are needed. The costs and the amount of separate parts additionally necessary, which support the hose, shall be as low as possible. Further, the coating is supposed to visually increase the value of the wiper arm and the hose guiding parts shall be as unobtrusive as possible. The hose shall be hidden as far as possible for a person looking at it from the outside.
This object is achieved by a wiper arm, which includes a coating along at least part of the wiper arm's length with the coating including a hose channel.
The proposed hose channel is formed onto the coating in order not to increase the amount of separate parts and to avoid assembly costs. The hose is guided safely along the whole length of the hose channel and can easily be taken out of the channel and can also be put back easily. No tools are necessary.
In part, the hose is completely hidden as viewed from the front and is hidden to a great extent, as viewed from a lateral point of view.
At another location of the wiper arm, there is an undercut only in the straight sections and not in the bent sections of the hose channel. This is advantageous for the spraying technique, as the flanges are flexible in their straight sections allowing the undercut to be removed; wherein the bent sections might be damaged, especially by cracks, if the flanges had to give way towards the outside during removal from the mold.
The invention also includes a coating around the wiper arm with an arm head. The arm head can be connected for example by crimping with the wiper rod.
The invention further includes a wiper arm with the arm head, where the arm head is fittingly connected with the wiper rod and where the bottom of the hose channel and the adjacent surface of the arm head, situated at the side of the windshield, lie approximately in one plane, in order to receive an almost straight guiding of the hose in this area.
Another object of the invention is a process for manufacturing the coating with hose channel. In the preferred embodiment the coating is manufactured from Ultradur, a trademark of BASF.
Further advantageous details and embodiments of the invention will be explained below by way of the attached drawings, in which
DESCRIPTION OF DRAWINGS
FIG. 1 shows a wiper arm with wiper blade and nozzles according to the invention.
FIG. 2 shows a bottom view of the wiper arm with hose support, without wiper blade and without nozzle carrier.
FIG. 3 is partly a longitudinal section, partly a lateral view of a wiper arm.
FIG. 4 shows a bottom view of the wiper arm of FIG. 3 with a push-on slip and a clip to support the hose.
FIG. 5 is partly a longitudinal section of a lateral view of a
REFERENCES:
patent: 3154281 (1964-10-01), Frank
Edele Reinhard
Johannes Reinhard
Krizek Oldrich
Schmid Eckhardt
Gossett Dykema
Graham Gary K.
Scherbel David A.
SWF Auto Electric GmbH
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