Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Patent
1999-05-24
2000-09-19
Graham, Gary K.
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
1525041, 152504, B60S 138, B60S 146, B60S 128
Patent
active
061193003
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a windshield wiper blade for a vehicle windshield wiper devise.
German patent application no. DE 27 00 527 A1 discloses a windshield wiper blade consisting of a wiper blade rubber made of resiliently deformable material that has two parallel wiper lips, each of which is connected to a backing by means of a neck. An element for removing insects and dirt is attached to each of the mutually remote longitudinal sides of the wiper lips, with such insect and dirt removing element being made up of a strip of sponge, brushes, squeegee/scrubber, or other suitable elements or parts. The cross-section shows that these wiper lips are relatively narrow in relation to their height and separated by only a small gap. The necks which connect the wiper lips to the backing are in alignment with the longitudinal sides of the wiper lips that face each other. Even though each wiper lip thus exhibits only one shoulder formed between the mutually remote longitudinal sides and the upper sides of the wiper lip, it is not evident that such shoulder can be supported by the backing at any time during the wiping operation. Since, in addition, the wiper lips are relatively high and narrow, it can be assumed that the wiper lips are very flexible and, consequently, that their lower parts are deformed relatively strongly in the direction of the surface of the windshield during wiping operations. Therefore, on the one hand, a relatively large part of the insect or dirt removing element contacts the windshield to be cleaned, which means it does so with relatively low surface pressure and, hence, the intensity of the cleaning operation is reduced. On the other hand, it can be expected that the wiper lips cannot change to the opposite titled position when the direction of motion is reversed in accordance with their proper function. If the wiper lips do not swing to the other tilted position properly at the reversal point, the insect and dirt removing element which is in contact with the windshield will create a film of direct that impedes visibility and cannot be removed immediately by the wiping edge of the trailing wiper lip. In both cases, the desired good wiping quality is not achieved. If the swinging-over of the wiper lips to the opposite tilted position is to be ensured by additional technical measures, for example, by reducing the contact pressure of the windshield wiper blade at the reversal point, additional technical efforts and expenses would be required.
SUMMARY OF THE INVENTION
The object of the present invention is to improve the wiping quality of a windshield wiper blade of the type described above through simple technical means.
According to the present invention, in such a windshield wiper blade, the two wiper lips of the wiper blade rubber are not as highly flexible as those disclosed in German patent application no. DE 27 00 527 A1. Thus, the intensive-cleaning element can be pressed against the windshield with greater surface pressure, which increases the cleaning effect when there is a lot of direct or very sticky dirt on the windshield. Due to the symmetrical form of each wiper lip and since each shoulder of each wiper lip can be supported on the underside of the backing on both sides, it is ensured that the wiper lips swing to the other titled position properly when the direction of motion of the wiper blade rubber is reversed. Hence, the dirt loosened or cleaned from the windshield by the leading intensive-cleaning element is definitely removed by the wiping edge of the trailing wiper lip in both directions of motion of the wiper blade rubber.
A further embodiment of the invention offers the additional advantage that the individual segments of the intensive-cleaning elements sweep over the windshield with even greater surface pressure and, thus, can loosen or wipe off even more tenacious dirt. Consequently, the entire area wiped by the windshield wiper blade is swept over once completely by intensive-cleaning elements during one complete wiping cycle, which cons
REFERENCES:
patent: 1379463 (1921-03-01), Keine
patent: 1864208 (1932-06-01), Lundberg
patent: 2179454 (1939-11-01), Paulus
patent: 5048146 (1991-09-01), Cavenago
Bommer Jurgen
Egner-Walter Bruno
Fischer Klaus
Schmid Eckhardt
Graham Gary K.
ITT Manufacturing Enterprises Inc.
Lewis J. Gordon
LandOfFree
Wiper blade for a vehicle windscreen wiper device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wiper blade for a vehicle windscreen wiper device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wiper blade for a vehicle windscreen wiper device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1059431