Brushing – scrubbing – and general cleaning – Attachments – Optical-member-attachable cleaner
Reexamination Certificate
2000-02-10
2001-08-28
Graham, Gary K. (Department: 1744)
Brushing, scrubbing, and general cleaning
Attachments
Optical-member-attachable cleaner
C015S250400
Reexamination Certificate
active
06279193
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a secondary wiper to a windshield wiper, and more particularly to a wiper that is independently formed for detachably connecting to and locating in front of a windshield wiper. In a forward moving path of the windshield wiper over a windshield, hairs on the secondary wiper first sweeps granular and/or powdered dust off the windshield, so that hard dust would not be brought by the following windshield wiper to scrape and damage the windshield. And, in a reverse moving path of the windshield wiper, a long wiping element on the secondary wiper effectively removes watermarks on the windshield.
DESCRIPTION OF THE PRIOR ART
A conventional windshield wiper usually includes only one wiping element made of rubber material. When using such rubber-made wiping element to clean dirt attached to a windshield, such as granular and/or powdered dust, bodies of dead insects, and/or bird soils, the windshield tends to be smeared by such dirt wetted with water. Some of the dirt is considerably bard and tends to damage the windshield when it is brought by the rubber-made wiping element to move across the windshield and scrape both the windshield and the wiping element.
To solve these problems, a windshield wiper including one single piece of wiping element and two stripes of hairs separately located at two sides of the wiping element is developed The two stripes of hairs are designed to remove bird soils, bodies of dead insects and/or dust from the windshield before the wiping element sweeps across the windshield to scrape other remaining dust off the windshield Since the two stripes of hairs are so close to the wiping element that they have only limited effect in sweeping off hard dirt and protecting the windshield and the rubber-made wiping element from being scraped by the hard dirt. Moreover, the two stripes of hairs tend to be caught by and pressed below the wiping element when the windshield wiper sweeps across the windshield, resulting in even worse cleaning effect. And, since the hair stripes and the wiping element are integrated on the same windshield wiper, a damaged hair stripe or a damaged wiping element would necessitate replacement of a whole windshield wiper and that is, of course, not economical and practical.
Another conventional windshield wiper includes a rubber-made wiping element and a stripe of hairs located in front of the wiping element for removing dust from the windshield before the rubber-made wiping element sweeps across the windshield. The stripe of hairs, however, would result in watermarks on the windshield and bring some dust along with it to smear the windshield when the windshield wiper sweeps reversely. It is therefore tried by the inventor to develop a secondary wiper to the windshield wiper to eliminate drawbacks existing in the conventional windshield wipers.
SUMMARY OF THE INVENTION
A primary object of the present invention is to provide a secondary wiper that is detachably connected through connectors to an arched arm of a windshield wiper to locate in front of the latter relative to a sweeping direction of the windshield wiper The secondary wiper includes a hair holder to which multiple lines of hair and a long wiping element are held. When the windshield wiper and the secondary wiper are brought to sweep across a windshield, the multiple lines of hairs on the secondary wiper first sweep granular and/or powdered dust off the windshield, so that such dust would not be brought by the windshield wiper to scrape across and damage the windshield. When the wipers are brought to reversely sweep across the windshield, the long wiping element on the secondary wiper effectively scrape watermarks off the windshield to enhance an overall function of the windshield wiper.
Another object of the present invention is to provide a secondary wiper to a windshield wiper. The secondary wiper has multiple lines of hairs provided on a bottom surface of a hair holder. The lines of hairs have different hair lengths that gradually increase from inner lines closer to the windshield wiper to outer lines, so that the lines of hairs fitly contact with the windshield that has a certain curvature.
A further object of the present invention is to provide a secondary wiper detachably connected to a windshield wiper. A damaged secondary or windshield wiper may be independently replaced with a new one without the need to discard the other good wiper at the same time.
REFERENCES:
patent: 3939524 (1976-02-01), Knights
patent: 4719661 (1988-01-01), Hanselmann
patent: 5257436 (1993-11-01), Yang
patent: 5699581 (1997-12-01), Heneghan et al.
patent: 2700527 (1978-09-01), None
patent: 2356541 (1978-01-01), None
patent: 1419345 (1975-12-01), None
patent: 2038169 (1980-07-01), None
patent: 2124477 (1984-02-01), None
patent: 2132077 (1984-07-01), None
patent: 8001155 (1980-06-01), None
Dougherty & Troxell
Graham Gary K.
Wen Hao Chen
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