Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1998-01-21
2000-05-02
Graham, Gary K.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
15250454, 1525032, B60S 138
Patent
active
060556978
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a wiper blade. In a known wiper blade of this species (U.S. Pat. No. 4,127,916, FIGS. 21 to 23), the spring runner enclosed by the tip of the wiper strip is of the same length as the wiper strip. Therefore special embodiments of the support element and/or the tip held by the claws of the support element are necessary, so that the wiper strip is secured at the support element in its longitudinal direction. But nothing therein has been disclosed in connection with this. Also in this case, the spring runner is imbedded in the tip of the wiper strip, i.e. becoming integrally embodied right at its production. For this reason it must already be considered during the production process of the wiper strip what type of windshield the wiper blade is to service, so that the spring runner can fulfill its principal task--to provide the best possible even distribution of the bearing force over the entire length of the wiper strip--. The choice of spring runner depends upon a plurality of criteria, including for example the spherical curvature of the windshield to be wiped and the sloping of the windshield with regard to the air stream. This results in an uneconomic inventory keeping of windshield wiper blades, if customer demands are to be satisfied on a short-term basis.
SUMMARY OF THE INVENTION
Accordingly, it is an object of present invention to provide a wiper blade which eliminates the disadvantage of the prior art.
In keeping with these objects in the wiper blade the spring runner is arranged in a longitudinal channel penetrating the entire length of the tip, and it protrudes with its two ends from the tip formed support devices that secure the wiper strip on a support element.
When the windshield wiper blade is designed in accordance with the present invention it allows the possibility of introducing a spring runner into the longitudinal channel of the prefabricated wiper strip in accordance with customer requests. This simplifies the upkeep of the inventory. In addition, it allows by simple means to a achieve a securing of the spring runner-loaded wiper strip on the support element.
For a longitudinally moveable lock of the spring runner in the longitudinal channel of the wiper strip, the cross section of the spring runner is at least partially larger than the cross section of the prefabricated longitudinal channel.
A simple way of an even distribution of the bearing force over the entire wiper blade length can be achieved if the cross section of the spring runner tapers from the mid-section down to the end.
In this case, for practical purposes, the tapering of the spring runner cross section should be kept even.
A particularly simple embodiment of the mounting between the support element and the wiper strip is achieved, if the one end section of the support element has a stem facing the windshield and extending past the mouth of the longitudinal channel, on which counter support devices are arranged, which cooperate with the one end of the spring runner embodied as support device.
In accordance with one embodiment of the invention for the formation of easier to assemble counter support devices, the latter are formed by means of an opening penetrated by the one end of the spring runner.
In order to enable the end user to easily replace the worn-out wiper strip of the wiper blade, the other end section of the support element has an opening facing the windshield which is located at least in near proximity opposite a corresponding opening in the other end of the spring runner and when both openings by means of securing devices are fixed in reference to each other. After releasing the securing devices, the wiper strip along with the spring runner can be removed and can be replaced by a so-called "refill-set" --consisting of a wiper strip with a spring runner assembly--.
The securing devices are practically and cost-effectively constituted by a tension clip which is essentially U-shaped in cross section and made of a flexible material whose two U-legs have a de
REFERENCES:
patent: 2659097 (1953-11-01), Morton
patent: 2712146 (1955-07-01), Wise
patent: 3138817 (1964-06-01), Wise
patent: 3192551 (1965-07-01), Appel
patent: 3392415 (1968-07-01), Shipmann
patent: 4127916 (1978-12-01), van den Berg et al.
Graham Gary K.
Robert & Bosch GmbH
Striker Michael J.
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